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87vette81big
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This is my 1970 Pontiac 455 Engine Richard.
From a 1970 Bonneville Convertible.
Rated at 360 HP Gross & 500 ft/lbs torque.
Static compression ratio is 10.25 :1.
Engine 2 letter code is "YH".
Cylinder heads are # 15's .
1.96" diameter intake valves used.
She is an unmolested original with about 110,000 miles on it.
I have test ran it and its a solid runner.
A homemade test I used, I ran it for about 12 hours before I put it to long term storage.
From a 1970 Bonneville Convertible.
Rated at 360 HP Gross & 500 ft/lbs torque.
Static compression ratio is 10.25 :1.
Engine 2 letter code is "YH".
Cylinder heads are # 15's .
1.96" diameter intake valves used.
She is an unmolested original with about 110,000 miles on it.
I have test ran it and its a solid runner.
A homemade test I used, I ran it for about 12 hours before I put it to long term storage.
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87vette81big
Guest
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87vette81big
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Notice the engine codes and date codes locations on my 1971 GTO 455 Richard.
325 NET HP RATED.
325 NET HP RATED.
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87vette81big
Guest
More coming after Dinner.
Hardcore part numbers.
Hardcore part numbers.
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87vette81big
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87vette81big
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I have Vintage HO Racing Books here .
They are SACRED TO LONG TIME PONTIAC V8 GUYS LIKE TO JOHN-BIRDMAN & MYSELF.
I have noticed none have put them online.
HO & NUNZI ARE The Original Pontiac STREET RACERS.
I dont think I should scan and post .
They are SACRED TO LONG TIME PONTIAC V8 GUYS LIKE TO JOHN-BIRDMAN & MYSELF.
I have noticed none have put them online.
HO & NUNZI ARE The Original Pontiac STREET RACERS.
I dont think I should scan and post .
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87vette81big
Guest
We will use other links & Grumpys site.
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87vette81big
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Wallace Racing - Engine Code Charts
HOME
If you know the code number, try my new Engine search
These codes below may not be as accurate as my Engine Code Search page in link above.
Year CID HP Code Trans C.R. Cam Head BBL's Carb # Notes
1959 389 215 HP ET M 8.6 111 531395 1-2 7013075 425E
1959 389 215 HP ER A 8.6 111 531395 1-2 7013069 425E
1959 389 215 HP ES M 8.6 111 531395 1-2 7013075 425E
1959 389 245 HP DT M 8.6 640 531395 1-2 7013061
1959 389 245 HP D M 8.6 640 531395 1-2 7013061 425E
1959 389 245 HP N M 7.8 640 531395 1-2 7013061 Export
1959 389 245 HP K A 7.8 472 531395 1-2 7013060 Export
1959 389 245 HP J A 8.6 472 531395 1-2 7013060 Export
1959 389 260 HP F A 8.6 640 531395 1-4 2819S
1959 389 260 HP H M 8.6 640 531395 1-4 2819S
1959 389 260 HP L A 8.6 472 531395 1-4 2820S Export
1959 389 260 HP M A 7.8 472 531395 1-4 2820S Export
1959 389 300 HP FP M 10.0 472 531395 1-4 2819S Police 4-bolt main
1959 389 280 HP A A 10.0 472 531395 1-2 7013060/61
1959 389 300 HP B A 10.0 472 531395 1-4 2820S
1959 389 300 HP BP A 10.0 472 531395 1-4 2819S 4-bolt main
1959 389 315 HP C A 10.5 472 531395 3-2 (f)7013063-(c)64-(r)65
1959 389 315 HP G M 10.5 472 531395 3-2 (f)7013063-(c)67-(r)65
1959 389 330 HP AK A 10.5 886 531395 1-4 2820S 420A 4-bolt main
1959 389 330 HP AL M 10.5 886 531395 1-4 2819S 420A 4-bolt main
1959 389 345 HP AM A 10.5 886 531395 3-2 (f)7013063-(c)64-(r)65 420A 4-bolt main
1959 389 345 HP AN M 10.5 886 531395 3-2 (f)7013063-(c)67-(r)65 420A 4-bolt main
1960 389 215 HP E3 A 8.6 111 536109 1-2 7015062
1960 389 215 HP A2 M 8.6 111 536109 1-2 7015073 Std. 21-23-24
1960 389 215 HP G4 M 8.6 111 536109 1-2 7015073 Spec.
1960 389 215 HP R2 M 7.8 472 536109 1-2 7015073 Export
1960 389 230 HP J1 A 8.6 472 536109 1-2 7015070 Export
1960 389 230 HP K1 A 7.8 472 536109 1-2 7015070 Export
1960 389 281 HP L1 A 8.6 472 536109 1-4 2976S Export
1960 389 281 HP N1 A 7.8 472 536109 1-4 2976S Export
1960 389 235 HP B2 M 8.6 111 536109 1-4 2975S Std. 27-28
1960 389 235 HP H4 M 8.6 111 536109 1-4 2975S Spec. 27-28
1960 389 283 HP A1 A 10.25 472 536109 1-4 7015070
1960 389 303 HP P4 M 10.25 472 536109 1-4 2975S Police
1960 389 303 HP B1 A 10.25 472 536109 1-4 2976S
1960 389 303 HP P1 A 10.25 472 536109 1-4 2976S Police
1960 389 318 HP C1 A 10.75 472 536109 3-2 (F)7013063 (C)7015076 (R)7013065
1960 389 348 HP C1 A 10.75 886 536109 3-2 (F)7013063 (C)7015076 (R)7013065 425A
1960 389 348 HP M4 M 10.75 886 536109 3-2 (F)7013063 (C)7015068 (R)7013065 4-bolt main
1960 389 318 HP C4 A 10.75 472 536109 3-2 (F)7013063 (C)7015068 (R)7013065
1960 389 333 HP F1 A 10.75 886 536109 1-4 2976S 425A 4-bolt main
1960 389 333 HP F4 M 10.75 886 536109 1-4 2975S 425A 4-bolt main
1960 389 348 HP 536387 M 10.75 480 (#7) 535461 1-4 3289S 3444S 389SD 4-bolt main
1960 389 363 HP 536387 M 10.75 480 (#7) 535461 3-2 (F)7013063 (C)7015068 (R)7013065 389SD 4-bolt main
1961 389 215 HP A2 M 8.6 111 538177 1-2 7019060
1961 389 215 HP A4 M 8.6 111 538177 1-2 7019060
1961 389 215 HP G4 M 8.6 111 538177 1-2 7019060 HD clutch
1961 389 230 HP W3 A 8.6 640 538177 1-2 7018075 A.C.
1961 389 230 HP W7 A 8.6 640 538177 1-2 7019074 A.C.
1961 389 230 HP E3 A 8.6 640 538177 1-2 7018075
1961 389 230 HP J1 A 8.6 640 538177 1-2 7018075 Export
1961 389 230 HP K1 A 7.8 640 538177 1-2 7018075 Export
1961 389 230 HP E7 A 8.6 640 538177 1-2 7019074
1961 389 235 HP H4 M 8.6 111 538177 1-4 3123S HD clutch
1961 389 235 HP B4 M 8.6 111 538177 1-4 3123S
1961 389 235 HP B2 M 8.6 111 538177 1-4 3123S
1961 389 240 HP R2 M 7.8 472 538177 1-2 9019060 Export
1961 389 240 HP R4 M 7.8 472 538177 1-2 9019060 Export
1961 389 257 HP K5 A 7.8 472 538177 1-2 7019074 Export
1961 389 257 HP Q5 A 8.6 472 538177 1-2 7019074 Export
1961 389 267 HP A1 A 10.25 640 538177 1-2 7019071
1961 389 283 HP A5 A 10.25 472 538177 1-2 7019070
1961 389 283 HP B1 A 10.25 472 538177 1-2 7019070
1961 389 267 HP S1 A 10.25 640 538177 1-2 7019071 A.C.
1961 389 283 HP S5 A 10.25 472 538177 1-2 7019070
1961 389 287 HP BF A 10.25 640 538177 1-4 3125S
1961 389 287 HP TF A 10.25 640 538177 1-4 3125S A.C.
1961 389 303 HP P9 M 10.25 472 538177 1-4 3123S Police HD lifters
1961 389 303 HP P0 A 10.25 472 538177 1-4 3125S Police HD lifters
1961 389 303 HP B5 A 10.25 472 538177 1-4 3123S
1961 389 303 HP BB A 10.25 472 538177 1-4 3124S
1961 389 303 HP TB A 10.25 472 538177 1-4 3124S A.C.
1961 389 303 HP P4 M 10.25 472 538177 1-4 3123S Police HD lifters
1961 389 303 HP P6 M 10.25 472 538177 1-4 3123S Police HD lifters
1961 389 318 HP C0 A 10.75 472 538177 3-2 (F)7013063 (C)7019069 (R)7013065
1961 389 318 HP I9 A 10.75 472 538177 3-2 (F)7013063 (C)7019069 (R)7013065
1961 389 318 HP RC0 A 10.75 472 538177 3-2 (F)7013063 (C)7019069 (R)7013065
1961 389 318 HP R19 A 10.75 472 538177 3-2 (F)7013063 (C)7019069 (R)7013065
1961 389 318 HP C4 M 10.75 472 538177 3-2 (F)7013063 (C)7019064 (R)7013065
1961 389 318 HP RC4 M 10.75 472 538177 3-2 (F)7013063 (C)7019064 (R)7013065
1961 389 318 HP RC6 M 10.75 472 538177 3-2 (F)7013063 (C)7019064 (R)7013065
1961 389 318 HP RC8 M 10.75 472 538177 3-2 (F)7013063 (C)7019064 (R)7013065
1961 389 318 HP RCD M 10.75 472 538177 3-2 (F)7013063 (C)7019064 (R)7013065
1961 389 318 HP RCE M 10.75 472 538177 3-2 (F)7013063 (C)7019064 (R)7013065
1961 389 318 HP C6 M 10.75 472 538177 3-2 (F)7013063 (C)7019064 (R)7013065
1961 389 318 HP C8 M 10.75 472 538177 3-2 (F)7013063 (C)7019064 (R)7013065
1961 389 318 HP CD M 10.75 472 538177 3-2 (F)7013063 (C)7019064 (R)7013065
1961 389 318 HP CE M 10.75 472 538177 3-2 (F)7013063 (C)7019064 (R)7013065
1961 389 333 HP U9 A 10.75 886 538177 1-4 3124S 425A 4-bolt main
1961 389 333 HP F0 A 10.75 886 538177 1-4 3125S 425A 4-bolt main
1961 389 333 HP F4 M 10.75 886 538177 1-4 3123S 425A 4-bolt main
1961 389 333 HP F6 M 10.75 886 538177 1-4 3123S 425A 4-bolt main
1961 389 333 HP F8 M 10.75 886 538177 1-4 3123S 425A 4-bolt main
1961 389 333 HP FD M 10.75 886 538177 1-4 3123S 425A 4-bolt main
1961 389 333 HP FE M 10.75 886 538177 1-4 3123S 425A 4-bolt main
1961 389 348 HP RM6 M 10.75 886 538177 3-2 (F)7013063 (C)7019064 (R)7013065 425A 4-bolt main
1961 389 348 HP RM8 M 10.75 886 538177 3-2 (F)7013063 (C)7019064 (R)7013065 425A 4-bolt main
1961 389 348 HP M6 M 10.75 886 538177 3-2 (F)7013063 (C)7019064 (R)7013065 425A 4-bolt main
1961 389 348 HP M8 M 10.75 886 538177 3-2 (F)7013063 (C)7019064 (R)7013065 425A 4-bolt main
1961 389 348 HP MD M 10.75 886 538177 3-2 (F)7013063 (C)7019064 (R)7013065 425A 4-bolt main
1961 389 348 HP ME M 10.75 886 538177 3-2 (F)7013063 (C)7019064 (R)7013065 425A 4-bolt main
1961 389 348 HP RMD M 10.75 886 538177 3-2 (F)7013063 (C)7019064 (R)7013065 425A 4-bolt main
1961 389 348 HP RME M 10.75 886 538177 3-2 (F)7013063 (C)7019064 (R)7013065 425A 4-bolt main
1961 389 348 HP M0 A 10.75 886 538177 3-2 (F)7013063 (C)7019069 (R)7013065 425A 4-bolt main
1961 389 348 HP V9 A 10.75 886 538177 3-2 (F)7013063 (C)7019069 (R)7013065 425A 4-bolt main
1961 389 348 HP RM0 A 10.75 886 538177 3-2 (F)7013063 (C)7019069 (R)7013065 425A 4-bolt main
1961 389 348 HP RV9 A 10.75 886 538177 3-2 (F)7013063 (C)7019067 (R)7013065 425A 4-bolt main
1961 389 348 HP V9 A 10.75 886 538177 3-2 (F)7013063 (C)7019067 (R)7013065 425A 4-bolt main
1961 389 348 HP M4 M 10.75 886 538177 3-2 (F)7013063 (C)7019064 (R)7013065 425A 4-bolt main
1961 389 348 HP RM4 M 10.75 886 538177 3-2 (F)7013063 (C)7019064 (R)7013065 425A 4-bolt main
1961 389 SD 368 538181 M 10.75 233 540306 3-2 (F)7013063 (C)7019064 (R)7013065 over the counter 4-bolt main
1961 389 SD 368 538181 M 10.75 233 540306 1-4 3266S or 3444S over the counter 4-bolt main
1961 421 SD 373 HP 538181 M 11.00 992 #11 540306 2-4 (F)3433S (R)3435S over the counter 4-bolt main
1962 389 215 HP 01A M 8.6 111 538177 1-2 7020060
1962 389 215 HP 03A M 8.6 111 538177 1-2 7020060
1962 389 215 HP 03B M 8.6 111 538177 1-2 7020060
1962 389 230 HP 20L A 8.6 640 538177 1-2 7020075
1962 389 230 HP 21L A 8.6 640 538177 1-2 7020075 A.C.
1962 389 230 HP 40R A 8.6 640 538177 1-2 7020074
1962 389 230 HP 41R A 8.6 640 538177 1-2 7020074 A.C.
1962 389 235 HP 02B M 8.6 111 538177 1-4 2123S
1962 389 235 HP 04B M 8.6 111 538177 1-4 2123S HD Clutch
1962 389 267 HP 15B M 10.25 640 538177 1-2 7020071
1962 389 240 HP 23H A 7.8 640 538177 1-2 7020075
1962 389 239 HP 05A M 7.8 472 538177 1-2 7020060 Export
1962 389 257 HP 44M M 7.8 472 538177 1-2 7020074 Export
1962 389 267 HP 15H A 10.25 640 538177 1-2 7020071
1962 389 267 HP 17H A 10.25 640 538177 1-2 7020071 A.C.
1962 389 267 HP 17B A 10.25 640 538177 1-2 7020071
1962 389 276 HP 45P A 7.8 472 538177 1-4 3326S Export
1962 389 287 HP 35M A 10.25 472 538177 1-2 7020070
1962 389 287 HP 37M A 10.25 472 538177 1-2 7020070 A.C.
1962 389 303 HP 06B M 10.25 472 538177 1-4 3123S
1962 389 303 HP 16K A 10.25 472 538177 1-4 3326S
1962 389 303 HP 16KJ A 10.25 472 538177 1-4 3326S
1962 389 303 HP 18K A 10.25 472 538177 1-4 3326S
1962 389 303 HP 36P A 10.25 472 538177 1-4 3300S
1962 389 303 HP 38P A 10.25 472 538177 1-4 3300S A.C.
1962 389 303 HP 39N A 10.25 472 538177 1-4 3300S HD Lifters
1962 389 318 HP 10B M 10.75 472 538177 3-2 (F)7013063 (C)7020069 (R)7013065
1962 389 318 HP 27J A 10.75 472 538177 3-2 (F)7013063 (C)7020069 (R)7013065
1962 389 318 HP 49N A 10.75 472 538177 3-2 (F)7013063 (C)7020067 (R)7013065
1962 389 333 HP 25J A 10.75 886 538177 1-4 3326S 425A 4-bolt main
1962 389 333 HP 47N A 10.75 886 538177 1-4 3300S 425A 4-bolt main
1962 389 333 HP 08B A 10.75 886 538177 1-4 3123S 425A 4-bolt main
1962 389 348 HP 28J A 10.75 886 538177 3-2 (F)7013063 (C)7020069 (R)7013065
1962 389 348 HP 50N A 10.75 886 538177 3-2 (F)7013063 (C)7020067 (R)7013065
1962 389 348 HP 11B M 10.75 886 538177 3-2 (F)7013063 (C)7020069 (R)7013065 425A 4-bolt main
1962 389 3-speed 385 HP 12B M 11.00 596 540306/544127 1-4 3444S 389 SD 4-bolt main
1962 389 4-speed 385 HP 12T M 11.00 596 540306/544127 1-4 3444S 389 SD 4-bolt main
1962 421 385 HP 12U M 11.00 596 540306/544127 1-4 3444S 421 SD 4-bolt main
1962 421 320 HP 29J A 10.75 472 538177 1-4 3326S 425A 4-bolt main
1962 421 320 HP 29K A 10.75 886 538177 1-4 3326S 425A 4-bolt main
1962 421 3-speed 405 HP 13B M 11.00 596 540306/544127 2-4 (F)3433S (R)3435S 421 SD 4-bolt main
1962 421 4-speed 405 HP 13U M 11.00 596 540306/544127 2-4 (F)3433S (R)3435S 421 SD 4-bolt main
1962 421 4-speed 405 HP 13BU M 11.00 596 540306/544127 2-4 (F)3433S (R)3435S 421 SD 4-bolt main
1963 326 250 HP 68X M 8.6 441 543797 1-2 7023071
1963 326 250 HP 69-0 A 8.6 441 543797 1-2 7023062
1963 326 260 HP 71X M 10.25 441 548232 1-2 7023071
1963 326 260 HP 60-0 M 10.25 441 548232 1-2 7023062
1963 326 280 HP 70X M 10.25 441 548232 1-4 3477S 326 HO
1963 326 280 HP 59-0 A 10.25 441 548232 1-4 3502S 326 HO
1963 389 215 HP 01A M 8.6 111 548232 1-2 7023066
1963 389 215 HP 03B M 8.6 111 548232 1-2 7023066 HD Clutch
1963 389 230 HP 20L A 8.6 640 543796 1-2 7023063 A.C.
1963 389 230 HP 21L A 8.6 640 543796 1-2 7023063 A.C.
1963 389 230 HP 40R A 8.6 640 543796 1-2 7023063 A.C.
1963 389 230 HP 41R A 8.6 640 543796 1-2 7023063 A.C.
1963 389 235 HP 02B M 8.6 111 543796 1-4 3479S
1963 389 235 HP 04B A 8.6 111 543796 1-4 3479S HD Clutch
1963 389 239 HP 05A M 7.6 472 543796 1-2 7023060 Export
1963 389 240 HP 23A A 7.6 640 543796 1-2 7023066 Export
1963 389 257 HP 44M A 7.6 472 543796 1-2 7023060 Export
1963 389 267 HP 15H A 10.25 640 543797 1-2 7023060
1963 389 267 HP 17H A 10.25 640 543797 1-2 7023060 A.C.
1963 389 276 HP 45P A 7.6 472 543796 1-4 3545S Export
1963 389 287 HP 35M A 10.25 472 543797 1-2 7023060
1963 389 287 HP 37M A 10.25 472 543797 1-2 7023060 A.C.
1963 389 303 HP 06B M 10.25 472 543797 1-4 3479S
1963 389 303 HP 16K A 10.25 472 543797 1-4 3326SA
1963 389 303 HP 36P A 10.25 472 543797 1-4 3300SA
1963 389 303 HP 38P A 10.25 472 543797 1-4 3300SA A.C.
1963 389 303 HP 39N A 10.25 472 543797 1-4 3326SA HD Lifter
1963 389 313 HP 17B M 10.25 472 543797 3-2 (F)7013060 (C)7023075 (R)7013075
1963 389 313 HP 266 A 10.25 472 543797 3-2 (F)7013063 (C)7023073 (R)7013065
1963 389 313 HP 48N A 10.25 472 543797 3-2 (F)7013063 (C)7023073/77 (R)7013065
1963 421 320 HP 22B M 10.25 009 543797 1-4 3479S 421A 4-bolt main
1963 421 320 HP 34J A 10.25 009 543797 1-4 3326SA 421A 4-bolt main
1963 421 320 HP 43N A 10.25 009 543797 1-4 3326SA 421A 4-bolt main
1963 421 353 HP 08B M 10.75 543 9770716 1-4 3326SA 421 HO 4-bolt main
1963 421 353 HP 25G A 10.75 543 9770716 1-4 3545S 421 HO 4-bolt main
1963 421 353 HP 47Q A 10.75 543 9770716 1-4 3545S 4-bolt main
1963 421 370 HP 11B M 10.75 543 9770716 3-2 (F)7023078 (C)7023161 (R)7023079 421 HO 4-bolt main
1963 421 370 HP 28G A 10.75 543 9770716 3-2 (F)7023078 (C)7023162 (R)7023079 421 HO 4-bolt main
1963 421 370 HP 50Q A 10.75 543 9770716 3-2 (F)7023078 (C)7023162 (R)7023079 421 HO 4-bolt main
1963 421 390 HP 12-5 M 12.00 596 9771980 1-4 3596S or (1-3)3636S 421 SD 4-bolt main
1963 421 390 HP 12U M 12.00 596 9771980 1-4 3596S or (1-3)3636S 421 SD 4-bolt main
1963 421 390 HP 125T M 12.00 596 9771980 1-4 3596S or (1-3)3636S 421 SD 4-bolt main
1963 421 390 HP 13-5 M 12.00 596 9771980 2-4 (F)3433S (R)3435S 421 SD 4-bolt main
1963 421 390 HP 13U M 12.00 596 9771980 2-4 (F)3433S (R)3435S 421 SD 4-bolt main
1963 421 390 HP 135U M 12.00 596 9771980 2-4 (F)3433S (R)3435S 421 SD 4-bolt main
1963 421 410 HP 24U M 13.00 596 9771980 2-4 (F)3433S (R)3435S 421 SD 4-bolt main
1963 421 410 HP 13-4 M 12.00 596 9771980 2-4 (F)3433S (R)3435S 421 SD 4-bolt main
1963 421 405 HP 75-9 M 12.00 596 9771980 2-4 (F)3433S (R)3435S 421 SD 4-bolt main
1964 326 250 HP 92X M 8.6 441 9773345 1-2 7023071
1964 326 250 HP 96-0 A 8.6 441 9773345 1-2 7023062
1964 326 280 HP 94X M 10.5 441 9773394 1-4 3686S 326 HO
1964 326 280 HP 97-0 A 10.5 441 9773344 1-4 3687S 326 HO
1964 389 230 HP 04L A 8.6 640 543796 1-2 7023063
1964 389 215 HP 01A M 8.6 111 543796 1-2 7023066
1964 389 215 HP 03A A 7.6 472 543796 1-2 7023066 Export
1964 389 215 HP 02B M 8.6 111 543796 1-2 7023066 HD Trans
1964 389 230 HP 05L A 8.6 640 543796 1-2 7023064 A/C
1964 389 230 HP 08R A 8.6 640 543796 1-2 7023063
1964 389 230 HP 09R A 8.6 640 543796 1-2 7023064 A/C
1964 389 235 HP 22B M 8.6 111 543796 1-4 3647S HD Trans
1964 389 267 HP 11H A 10.5 640 9773345 1-2 7023060
1964 389 267 HP 12H A 10.5 640 9773345 1-2 7023061
1964 389 283 HP 10A M 10.5 472 9773345 1-2 7023066
1964 389 283 HP 17M A 10.5 472 9773345 1-2 7023060
1964 389 283 HP 18M A 10.5 472 9773345 1-2 7023061
1964 389 283 HP 19R A 7.6 472 543796 1-2 7023060 Export
1964 389 303 HP 25K A 10.5 472 9773345 1-4 3648S
1964 389 303 HP 26K A 10.5 472 9773345 1-4 3648S A/C
1964 389 303 HP 27P A 10.5 472 9773345 1-4 3649S
1964 389 303 HP 28P A 10.5 472 9773345 1-4 3649S A/C
1964 389 306 HP 23B M 10.5 009 9773345 1-4 3647S
1964 389 306 HP 29N A 10.5 009 9773345 1-4 3649S
1964 389 325 HP 78X M 10.75 009 9770719 1-4 3647S GTO Option
1964 389 325 HP 79J A 10.75 009 9770716 1-4 3649S GTO Option
1964 389 330 HP 32B M 10.75 472 9770716 3-2 (F)7024178 (C)7024175 (R)7024179
1964 389 330 HP 34N M 10.75 472 9770716 3-2 (F)7024178 (C)7024173 (R)7024179
1964 389 330 HP 33-6 A 10.75 472 9770716 3-2 (F)7024178 (C)7024173 (R)7024179
1964 389 348 HP 76X M 10.75 009 9770716 3-2 (F)7024178 (C)7024175 (R)7024179
1964 389 348 HP 77J A 10.75 009 9770716 3-2 (F)7024178 (C)7024173 (R)7024179
1964 421 320 HP 35B M 10.5 009 9773345 1-4 3650S 4-bolt main
1964 421 320 HP 38S A 10.5 009 9773345 1-4 3651S 4-bolt main
1964 421 320 HP 43N A 10.5 009 9773345 1-4 3651S 4-bolt main
1964 421 350 HP 44B M 10.75 009 9770716 3-2 (F)7024078 (C)7024075 (R)7024079 4-bolt main
1964 421 350 HP 47S A 10.75 009 9770716 3-2 (F)7024078 (C)7024074 (R)7024079 4-bolt main
1964 421 350 HP 49N A 10.75 009 9770716 3-2 (F)7024078 (C)7024074 (R)7024079 4-bolt main
1964 421 HO 370 HP 45B M 10.75 543 9770716 3-2 (F)7024078 (C)7024075 (R)7024079 4-bolt main
1964 421 HO 370 HP 46G A 10.75 543 9770716 3-2 (F)7024078 (C)7024074 (R)7024079 4-bolt main
1964 421 HO 370 HP 50Q A 10.75 543 9770716 3-2 (F)7024078 (C)7024074 (R)7024079 4-bolt main
1965 326 250 HP WP M 8.6 441 62 1-2 7025071
1965 326 250 HP ZN A 8.6 441 62 1-2 7025062
1965 326 250 HP YN A 8.6 441 62 1-2 7025062
1965 326 285 HP WR M 10.5 441 22 1-4 3899S
1965 326 285 HP YP A 10.5 441 22 1-4 3900S
1965 389 256 HP WA M 8.6 441 75 1-2 7025066
1965 389 256 HP WB M 8.6 441 75 1-2 7025066 HD Clutch
1965 389 256 HP XA M 8.6 066 75 1-2 7025066
1965 389 256 HP XB A 7.6 066 75 1-2 7025060/61 A/C
1965 389 256 HP YA A 7.6 066 75 1-2 7025060/61 A/C
1965 389 256 HP YB A 8.6 441 75 1-2 7025060/61 A/C
1965 389 290 HP WC M 10.5 066 76 1-2 7025066 HD Clutch
1965 389 290 HP WD M 8.6 441 75 1-4 3895S
1965 389 290 HP YC A 10.5 066 76 1-2 7025060/61 A/C
1965 389 290 HP YD A 10.5 066 76 1-2 7025060/61 A/C
1965 389 290 HP XC A 7.6 066 75 1-4 3896S
1965 389 325 HP YE A 10.5 066 76 1-4 3896S
1965 389 325 HP YF A 10.5 066 76 1-4 3896S
1965 389 333 HP WE M 10.5 067 76 1-4 3895S
1965 389 335 HP WT M 10.75 067 77 1-4 3895S
1965 389 335 HP YS A 10.75 067 77 1-4 3896S
1965 389 338 HP WF M 10.75 066 77 3-2 (F)7025178 (C)7025175 (R)7025179
1965 389 338 HP YG A 10.75 066 77 3-2 (F)7025178 (C)7025173/77 (R)7025179
1965 389 360 HP WS M 10.75 068 77 3-2 (F)7025178 (C)7025175 (R)7025179
1965 389 360 HP YR A 10.75 068 77 3-2 (F)7025178 (C)7025173/77 (R)7025179
1965 421 338 HP WG M 10.5 067 76 1-4 3895S
1965 421 338 HP YH A 10.5 067 76 1-4 3898S
1965 421 356 HP WH M 10.75 067 77 3-2 ?(F)7025078 (C)7025075 (R)7025079 4-bolt main
1965 421 356 HP YJ A 10.75 067 77 3-2 ?(F)7025078 (C)7025070 (R)7025079 4-bolt main
1965 421HO 376 HP WJ M 10.75 068 77 3-2 ?(F)7025078 (C)7025075 (R)7025079 4-bolt main
1965 421HO 376 HP YK A 10.75 068 77 3-2 ?(F)7025078 (C)7025070 (R)7025079 4-bolt main
1966 326 250 HP WP M 9.2 254 094 1-2 7026071
1966 326 250 HP WX M 9.2 254 094 1-2 7026071 A.I.R.
1966 326 250 HP YN A 9.2 254 094 1-2 7026062
1966 326 250 HP XF A 9.2 254 094 1-2 7026062 A.I.R.
1966 326 285 HP WR M 10.5 254 095 1-4 4035S
1966 326 285 HP YP A 10.5 254 095 1-4 4036S
1966 326 285 HP XG A 10.5 254 095 1-4 4031S A.I.R.
1966 389 256 HP WA M 8.6 254 091 1-2 7026066
1966 389 256 HP WB M 8.6 254 091 1-2 7026066
1966 389 256 HP YA A 8.6 254 091 1-2 7026066/61 A/C
1966 389 256 HP XA M 7.6 066 091 1-2 7026066
1966 389 290 HP WC M 10.5 066 092 1-2 7026066
1966 389 290 HP YV A 10.5 066 092 1-2 7026060/61 A/C
1966 389 290 HP XB A 7.6 066 091 1-2 7026060/61 A/C
1966 389 290 HP YU A 10.5 066 092 1-2 7026060/61 A/C
1966 389 290 HP YC A 10.5 066 092 1-2 7026060/61 A/C
1966 389 290 HP YD A 10.5 066 092 1-2 7026060/61 A/C A.I.R.
1966 389 325 HP YX A 10.5 066 092 1-4 4034S
1966 389 325 HP XC A 7.6 066 091 1-4 4034S
1966 389 325 HP YL A 10.5 067 092 1-4 4034S
1966 389 325 HP YW A 10.5 066 092 1-4 4034S
1966 389 325 HP YF A 10.5 066 092 1-4 4034S
1966 389 325 HP YE A 10.5 066 092 1-4 4034S
1966 389 333 HP WE M 10.5 067 092 1-4 4033S
1966 389 335 HP WW M 10.75 067 093 1-4 4041S A.I.R.
1966 389 335 HP WT M 10.75 067 093 1-4 4043S
1966 389 335 HP YS A 10.75 067 093 1-4 4034S
1966 389 335 HP XE A 10.75 067 093 1-4 4030S A.I.R.
1966 389 360 HP WV M 10.75 068 093 3-2 (F)7025178 (C)7036175 (R)7025179 A.I.R.
1966 389 360 HP WS M 10.75 068 093 3-2 (F)7025178 (C)7026075 (R)7025179
1966 389 360 HP XS M 10.75 744 093 3-2 (F)7025178 (C)7026075 (R)7025179
1966 389 360 HP YR M 10.75 068 093 3-2 (F)7025178 (C)7026074 (R)7025179
1966 421 338 HP WG M 10.5 067 092 1-4 4033S 4-bolt main
1966 421 338 HP YH A 10.5 067 092 1-4 4037S 4-bolt main
1966 421 356 HP WH M 10.75 067 093 3-2 (F)7025078 (C)7026075 (R)7025079
1966 421 350 HP YZ A 10.5 066 092 1-4 4037S
1966 421 356 HP YJ A 10.75 067 093 3-2 (F)7025078 (C)7026074 (R)7025079
1966 421HO 376 HP WJ M 10.75 068 093 3-2 (F)7025078 (C)7026075 (R)7025079 4-bolt main
1966 421 376 HP YM A 10.75 068 093 3-2 (F)7025078 (C)7026074 (R)7025079 4-bolt main
1966 421HO 376 HP YK A 10.75 068 093 3-2 (F)7025078 (C)7026074 (R)7025079 4-bolt main
1967 326 250 HP WP M 9.2 254 140 1-2 7027071
1967 326 250 HP WX M 9.2 254 140 1-2 7037071 A.I.R.
1967 326 250 HP WC M 9.2 254 140 1-2 7027071
1967 326 250 HP WH M 9.2 254 140 1-2 7037071 A.I.R.
1967 326 250 HP YO A 9.2 254 140 1-2 7027071
1967 326 250 HP YN A 9.2 254 140 1-2 7027060
1967 326 250 HP XF A 9.2 254 140 1-2 7037062 A.I.R.
1967 326 250 HP YJ A 9.2 254 140 1-2 7027062
1967 326 250 HP XI A 9.2 254 140 1-2 7037062 A.I.R.
1967 326 285 HP WR M 10.5 254 141 1-4 4243S
1967 326 285 HP WO M 10.5 254 141 1-4 4245S
1967 326 285 HP XR M 10.5 254 141 1-4 4245S A.I.R.
1967 326 285 HP WK M 10.5 254 141 1-4 4243S
1967 326 285 HP WD M 10.5 254 141 1-4 4243S
1967 326 285 HP YP A 10.5 254 141 1-4 4246S
1967 326 285 HP XG A 10.5 254 141 1-4 4248S A.I.R.
1967 326 285 HP YM A 10.5 254 141 1-4 4246S
1967 326 285 HP XO A 10.5 254 141 1-4 4248S A.I.R.
1967 400 255 HP XL A 8.6 254 142 1-2 7037092 A.I.R.
1967 400 255 HP XM A 8.6 254 142 1-2 7027060
1967 400 260 HP XB A 7.6 254 142 1-2 7027060
1967 400 260 HP XA M 7.6 254 142 1-2 7027066
1967 400 265 HP WA M 8.6 254 142 1-2 7027066
1967 400 265 HP WB M 8.6 254 142 1-2 7027066
1967 400 265 HP YA A 8.6 254 142 1-2 7027060
1967 400 265 HP YB A 8.6 254 142 1-2 7037061 A.I.R.
1967 400 265 HP YC A 10.5 254 143 1-2 7027060
1967 400 265 HP YD A 10.5 254 143 1-2 7027061 A/C
1967 400 290 HP XV A 10.5 254 143/061 1-2 7027060
1967 400 290 HP XU A 10.5 254 061 1-2 7027061 A/C
1967 400 290 HP YU A 10.5 254 143 1-2 7037061 A.I.R.
1967 400 293 HP XC A 7.6 254 142 1-4 4242S
1967 400 325 HP WU M 10.75 067 670 1-4 7037273 A.I.R.
1967 400 325 HP WZ M 10.75 067 670 1-4 7027273
1967 400 325 HP WQ M 10.75 744 670 1-4 7037277 RA A.I.R.
1967 400 325 HP WI M 10.75 744 670/97 1-4 7027277
1967 400 325 HP YE A 10.5 066 143/061 1-4 4242S
1967 400 325 HP YF A 10.5 066 143/061 1-4 4242S A/C
1967 400 325 HP YT A 10.75 067 670 1-4 7027272
1967 400 335 HP XE A 10.75 067 670 1-4 7037263 A.I.R.
1967 400 325 HP XN A 10.75 744 670/97 1-4 7027276 RA
1967 400 325 HP XW A 10.5 066 143/061 1-4 4242S
1967 400 325 HP XX A 10.5 066 143/061 1-4 4242S A/C
1967 400 325 HP YX A 10.5 066 143 1-4 4244S A.I.R.
1967 400 333 HP WD M 10.5 067 143/061 1-4 4242S A.I.R.
1967 400 333 HP WE M 10.5 067 143/061 1-4 4243S
1967 400 333 HP WY M 10.5 067 143/061 1-4 4243S
1967 400 333 HP XT M 10.5 067 143/061 1-4 4245S A.I.R.
1967 400 335 HP WT M 10.75 067 670 1-4 7027063
1967 400 335 HP WW M 10.75 067 670 1-4 7037263 A.I.R.
1967 400 335 HP YS A 10.75 067 670 1-4 7037262
1967 400 350 HP XZ M 10.5 067 670 1-4 4243S GP
1967 400 350 HP XY M 10.5 067 670 1-4 4245S GP
1967 400 350 HP XH A 10.5 066 670 1-4 4242S GP
1967 400 350 HP XJ A 10.5 066 670 1-4 4242S GP A/C
1967 400 360 HP WS M 10.75 068 670 1-4 7027263
1967 400 360 HP WV M 10.75 068 670 1-4 7037263 A.I.R.
1967 400 360 HP WR M 10.75 068 670 1-4 7027263
1967 400 350 HP WF A 10.5 066 670 1-4 4242S GP A/C
1967 400 360 HP YI A 10.75 068 670 1-4 7037262 A.I.R.
1967 400 360 HP YR M 10.75 744 670 1-4 7037263 RA A.I.R.
1967 400 360 HP YQ A 10.75 744 670 1-4 7037262 RA A.I.R.
1967 400 360 HP XS M 10.75 744 670 1-4 7027263
1967 400 360 HP YZ A 10.75 068 670 1-4 7027262
1967 400 360 HP XP A 10.75 744 670 1-4 7027262
1967 428 360 HP WG M 10.5 067 670 1-4 7027263
1967 428 360 HP Y2 A 10.5 067 670 1-4 7027262
1967 428 360 HP YY M 10.5 067 670 1-4 7037263 A.I.R.
1967 428 376 HP WJ M 10.75 068 670 1-4 7027263
1967 428 376 HP XK M 10.75 068 670 1-4 7037263 A.I.R.
1967 428 376 HP Y3 A 10.75 068 670 1-4 7027263
1967 428 360 HP YH A 10.5 067 670 1-4 7027262
1967 428 376 HP YK A 10.75 068 670 1-4 7037263 A.I.R.
1968 350 265 HP WD M 9.2 254 17 1-2 7028071
1968 350 265 HP WC M 9.2 254 17 1-2 7028271
1968 350 265 HP YN A 9.2 254 17 1-2 7028062/72
1968 350 265 HP YJ M 9.2 254 17 1-2 7028062
1968 350 320 HP WR M 10.5 066 18 1-4 7028269
1968 350 320 HP WK M 10.5 067 18 1-4 7028269
1968 350 320 HP YP A 10.5 067 18 1-4 7028266
1968 350 320 HP YM A 10.5 066 18 1-4 7028266
1968 400 265 HP XM A 8.6 254 14 1-2 7028060
1968 400 265 HP YA A 8.6 254 14 1-2 7028060/70
1968 400 265 HP XA A 8.6 254 14 1-2 7028060/70
1968 400 290 HP WA M 10.5 066 (2)15 1-2 7028066
1968 400 290 HP WB M 10.5 066 (2)15 1-2 7028066
1968 400 290 HP YC A 10.5 254 (2)15 1-2 7028060/70
1968 400 330 HP YT A 10.75 067 (2)16/62 1-4 7028264
1968 400 330 HP YW A 10.75 067 16 1-4 7028264 HO
1968 400 335 HP WQ M 10.75 068 16 1-4 7028271 HO
1968 400 335 HP WZ M 10.75 067 (2)16 1-4 7028265
1968 400 335 HP WI M 10.75 744 31 1-4 7028277 RA I
1968 400 335 HP XN A 10.75 068 31 1-4 7028276 RA I
1968 400 340 HP YE A 10.5 066 16 1-4 7028264
1968 400 340 HP WU M 10.75 041 R (96) A 1-4 7028273 RA II
1968 400 340 HP XT A 10.75 041 R (96) A 1-4 7028270 RA II
1968 400 350 HP XZ M 10.5 067 16/62 1-4 7028263 GP
1968 400 350 HP XH A 10.5 066 16/62 1-4 7028262 GP
1968 400 350 HP YS A 10.75 066 16 1-4 7028268
1968 400 350 HP YZ A 10.75 067 16 1-4 7028268 HO
1968 400 360 HP WT M 10.75 067 16 1-4 7028263
1968 400 360 HP WS M 10.75 068 16 1-4 7028267 HO
1968 400 360 HP XS M 10.75 744 31 1-4 7028275 RA I
1968 400 360 HP XP A 10.75 068 31 1-4 7028274 RA I
1968 400 366 HP WY M 10.75 041 R (96) A 1-4 7028273 RA II
1968 400 366 HP XW A 10.75 041 R (96) A 1-4 7028270 RA II
1968 428 375 HP WG M 10.5 068 16/62 1-4 7028267 GP
1968 428 375 HP YH A 10.5 067 16/62 1-4 7028268 GP
1968 428 390 HP WJ M 10.75 068 16 1-4 7028267 HO exh
1968 428 390 HP YK A 10.75 067 16 1-4 7028268 HO exh
1969 350 265 HP WC M 9.2 254 47 1-2 7028071 30 degree int.
1969 350 265 HP WP M 9.2 254 47 1-2 7028071 30 degree int.
1969 350 265 HP WM M 9.2 254 47 1-2 7028071 45degree int.
1969 350 265 HP WU M 9.2 254 47 1-2 7028071 45degree int.
1969 350 265 HP XL M 9.2 254 47 1-2 7029062/72 30 degree int.
1969 350 265 HP YJ A 9.2 254 47 1-2 7029062/72 30 degree int.
1969 350 265 HP XR A 9.2 254 47 1-2 7029062 30 degree int.
1969 350 265 HP YN A 9.2 254 47 1-2 7029062 30 degree int.
1969 350 265 HP XB A 9.2 254 47 1-2 7029062/72 45 degree int.
1969 350 265 HP YE A 9.2 254 47 1-2 7029062/72 45 degree int.
1969 350 265 HP YU A 9.2 254 47 1-2 7029062 45 degree int.
1969 350 265 HP XS A 9.2 254 47 1-2 7029062 45 degree int.
1969 350 325 HP WK M 10.5 067 48 1-4 7029263
1969 350 325 HP WN M 10.5 068 48 1-4 7029263 350 HO
1969 350 325 HP XC A 10.5 067 48 1-4 7029268 350 HO
1969 350 325 HP XD A 10.5 067 48 1-4 7029268
1969 350 330 HP WR M 10.5 068 48 1-4 7029263
1969 350 330 HP WV M 10.5 068 48 1-4 7029263
1969 350 330 HP XT A 10.5 067 48 1-4 7029268
1969 350 330 HP XU A 10.5 067 48 1-4 7029268
1969 350 330 HP YP A 10.5 067 48 1-4 7029268
1969 400 265 HP XM A 8.6 254 45 1-2 7028060/70
1969 400 265 HP XX A 8.6 254 45 1-2 7028060/70
1969 400 265 HP YB A 8.6 254 45 1-2 7028060/70
1969 400 265 HP YA A 8.6 254 45 1-2 7028060/70
1969 400 265 HP YF A 8.6 254 45 1-2 7028060/70 GP
1969 400 290 HP WA M 10.5 066 46 1-2 7028066 30 degree intake
1969 400 290 HP WB M 10.5 066 46 1-2 7028066 30 degree intake
1969 400 290 HP WD M 10.5 066 46 1-2 7028066 45 degree intake
1969 400 290 HP WE M 10.5 066 46 1-2 7028066 45 degree intake
1969 400 290 HP YC A 10.5 254 46 1-2 7029060/70 30 degree intake
1969 400 290 HP YD A 10.5 254 46 1-2 7029060/70 45 degree intake
1969 400 330 HP WZ M 10.75 067 16 1-4 7029263
1969 400 330 HP YT A 10.75 067 16/62 1-4 7029268
1969 400 335 HP WQ M 10.75 068 48 1-4 7028273/7029273 RA III
1969 400 335 HP YW A 10.75 067 16/62 1-4 7028270/7029270 RA III
1969 400 340 HP XZ A 10.5 254 46 1-4 7029062 Bonneville
1969 400 345 HP WH M 10.75 041 722 1-4 7029273 RA IV
1969 400 345 HP XN A 10.75 041 722 1-4 7029270 RA IV
1969 400 350 HP WT M 10.75 068 48 1-4 7029263 non-RA
1969 400 350 HP WX M 10.5 067 16 1-4 7029263 GP
1969 400 350 HP YS A 10.75 067 16/62 1-4 7029268 non-RA
1969 400 350 HP XH A 10.5 066 16 1-4 7029268 GP
1969 400 366 HP WS M 10.75 068/744 48 1-4 7028273/7029273 RA III
1969 400 366 HP YZ A 10.75 068 16 1-4 7028273/7029273 RA III
1969 400 370 HP WW M 10.75 041 722 1-4 7029273 RA IV
1969 400 370 HP XP A 10.75 041 722 1-4 7029270 RA IV
1969 400 375 HP WI M 10.75/11.5
44 1-4
RA V
1969 400 375 HP WY M 10.75/11.5
44 1-4
RA V
1969 400 375 HP XY A 10.75/11.5
44 1-4
RA V
1969 400 375 HP XW A 10.75/11.5
44 1-4
RA V
1969 428 360 HP WG M 10.5 067 16 1-4 7029263
1969 428 360 HP YL A 10.5 066 46 1-4 7029268 30 deg int. Bonneville
1969 428 360 HP YH A 10.5 066 46 1-4 7029268 45 deg int. Bonneville
1969 428 360 HP XE A 10.5 067 16 1-4 7029263
1969 428 360 HP XJ A 10.5 067 46 1-4 7029263
1969 428 360 HP XK A 10.5 067 16 1-4 7029263
1969 428 370 HP WF M 10.5 067 16 1-4 7029263 GP
1969 428 370 HP XF A 10.5 066 16 1-4 7029268 GP
1969 428 390 HP WJ M 10.75 068 48 1-4 7029263
1969 428 390 HP WL M 10.75 068 48 1-4 7029263 GP
1969 428 390 HP YK A 10.75 067 16 1-4 7029268
1969 428 390 HP XG A 10.75 067 16 1-4 7029268 GP
1970 350 255 HP W7 M 8.8 254 11 1-2 7028071
1970 350 255 HP WU M 8.8 254 11 1-2 7028071
1970 350 255 HP X7 A 8.8 254 11 1-2 7028062
1970 350 255 HP YU A 8.8 254 11 1-2 7028062/72
1970 400 265 HP XX A 8.8 254 11 1-2 7040060/64
1970 400 265 HP YB A 8.8 254 11 1-2 7028060/64
1970 400 290 HP WE M 10.0 066 16/sm valve 1-2 7040066
1970 400 290 HP YD A 10.0 254 16/sm valve 1-2 7040060/64
1970 400 330 HP XZ A 10.0 066 16/sm valve 1-4 7040264
1970 400 330 HP XV A 10.0 066 16/sm valve 1-4 7040264
1970 400 350 HP WT M 10.25 067 12 1-4 7040263
1970 400 350 HP WX M 10.25 067 13 1-4 7040263 GP
1970 400 350 HP XH A 10.25 066 13 1-4 7040264 GP
1970 400 350 HP YS A 10.0 067 13 1-4 7040264
1970 400 366 HP WS M 10.5 068 12 1-4 7040273 RA III
1970 400 366 HP YZ A 10.5 068 12 1-4 7040270 RA III
1970 400 370 HP WW M 10.5 041 614 1-4 7040273 RA IV
1970 400 370 HP WH M 10.5 041 614 1-4 7040273 RA IV
1970 400 370 HP XP A 10.5 041 614 1-4 7040270 RA IV
1970 400 370 HP XN A 10.5 041 614 1-4 7040270 RA IV
1970 455 360 HP WA M 10.25 068 64 1-4 7040267/RA 7040279 only hi comp 455
1970 455 360 HP YC A 10.25 067 64 1-4 7040268/RA 7040278 only hi comp 455
1970 455 360 HP YH A 10.0 067 15 1-4 7040262 only hi comp 455
1970 455 370 HP WG M 10.25 068 64 1-4 7040267 GP /only hi comp 455
1970 455 370 HP XF A 10.25 067 64 1-4 7040268 GP /only hi comp 455
1971 350 250 HP WR M 8.0/8.2 (FB) 555 94 1-2 7041171
1971 350 250 HP WU M 8.0/8.2 (FB) 555 94 1-2 7041171
1971 350 250 HP WN M 8.0/8.2 (FB) 555 94 1-2 7041171
1971 350 250 HP WP M 8.0/8.2 (FB) 555 94 1-2 7041171
1971 350 250 HP XR A 8.0/8.2 (FB) 555 94 1-2 7041171
1971 350 250 HP YU A 8.0/8.2 (FB) 555 94 1-2 7041171
1971 350 250 HP YN A 8.0 555 94 1-2 7041171
1971 350 250 HP YP A 8.0 555 94 1-2 7041171
1971 400 265 HP WS M 8.2 555 99 1-2 7041171
1971 400 265 HP WX M 8.2 555 99 1-2 7041171
1971 400 265 HP XX A 8.2 555 99 1-2 7041160
1971 400 265 HP YX M 8.2 555 99 1-2 7041160
1971 400 300 HP WK M 8.2 067 96 1-4 7041263
1971 400 300 HP WT M 8.2 067 96 1-4 7041263
1971 400 300 HP YS A 8.2 067 96 1-4 7041264
1971 455 280 HP WG M 8.2 066 98 1-4 7041267
1971 455 280 HP YG A 8.2 066 98 1-4 7041262
1971 455 325 HP WJ M 8.2 067 66 1-4 7041267
1971 455 325 HP YC A 8.2 067 66 1-4 7041262
1971 455 335 HP WL M 8.4 068 197 1-4 7041267/273(RA) 3 speed 455 HO
1971 455 335 HP WC M 8.4 068 197 1-4 7041267/273(RA) 4 speed 455 HO
1971 455 335 HP YE A 8.4 068 197 1-4 7041268/270(RA) 455 HO
1972 350 160 HP WR M 8.0 555 7H1 1-2 6311S
1972 350 160 HP YU A 8.0 555 7H1 1-2 7042062
1972 350 160 HP YV A 8.0 555 7H1 1-2 7042062
1972 350 160 HP YR A 8.0 555 7H1 1-2 7042062
1972 400 200 HP YX A 8.2 555 7J2 1-2 7042060
1972 400 200 HP YZ A 8.2 555 7J2 1-2 7042060
1972 400 200 HP ZR A 8.2 555 7J2 1-2 7042060
1972 400 200 HP ZV A 8.2 555 7J2 1-2 7042060
1972 400 200 HP ZX A 8.2 066 7J2 1-2 7042062
1972 400 250 HP WK M 8.2 067 7K3 1-4 7042263
1972 400 250 HP WS M 8.2 067 7K3 1-4 7042263
1972 400 250 HP YS A 8.2 067 7K3 1-4 7042264
1972 400 250 HP YT A 8.2 067 7K3 1-4 7042272
1972 400 250 HP ZS A 8.2 067 7K3 1-4 7042264
1972 455 185/200 HP YH A 8.2 066 7L4 1-2 7042064
1972 455 185/200 HP YW A 8.2 066 7L4 1-2 7042064
1972 455 250 HP ZH A 8.2 067 7M5 1-4 7042262
1972 455 250 HP YA A 8.2 067 7M5 1-4 7042262/72
1972 455 250 HP YC A 8.2 067 7M5 1-4 7042262/72
1972 455 250 HP Y4 A 8.2 067 7M5 1-4 7042262
1972 455 250 HP YD A 8.2 067 7M5 1-4 7042262
1972 455 250 HP YK A 8.2 067 7M5 1-4 7042262
1972 455 HO 300 HP WD M 8.4 068 7F6 1-4 7042273 RA
1972 455 HO 300 HP WM M 8.4 068 7F6 1-4 7042273 RA
1972 455 HO 300 HP YB A 8.4 068 7F6 1-4 7042270 RA
1972 455 HO 300 HP YE A 8.4 068 7F6 1-4 7042270 RA
1973 350 175 HP XR M 7.6 555 46 1-2 7043071
1973 350 150/175 HP WV M 7.6 555 46 1-2 7043071
1973 350 150/175 HP ZB M 7.6 555 46 1-2 7043062/63/72
1973 350 150/175 HP ZD M 7.6 555 46 1-2 7043062/63/72
1973 350 150 HP Y2 A 7.6 555 46 1-2 7043062/63/72
1973 350 150 HP Y7 A 7.6 555 46 1-2 7043062/63/72
1973 350 150 HP YL A 7.6 555 46 1-2 7043062/63/72
1973 350 150 HP YR A 7.6 555 46 1-2 7043062/63/72
1973 350 150 HP YV A 7.6 555 46 1-2 7043062/63/72
1973 350 150/175 HP ZR A 7.6 555 46 1-2 7043062/63/72
1973 350 150/175 HP ZV A 7.6 555 46 1-2 7043062/63/72
1973 350 150/175 HP WA A 7.6 555 46 1-2 7043062/63/72
1973 350 150/175 HP WC A 7.6 555 46 1-2 7043062/63/72
1973 350 150/175 HP WD A 7.6 555 46 1-2 7043062/63/72
1973 350 150/175 HP WF A 7.6 555 46 1-2 7043062/63/72
1973 350 150/175 HP WL A 7.6 555 46 1-2 7043062/63/72
1973 350 150/175 HP WN A 7.6 555 46 1-2 7043062/63/72
1973 350 150/175 HP XZ A 7.6 555 46 1-2 7043062/63/72
1973 400 170/185 HP W5 M 8.0 555 4X 1-2 7043060/61
1973 400 170/185 HP XH A 8.0 555 4X 1-2 7043060/61
1973 400 170/185 HP X1 A 8.0 255 4X 1-2 7043060/61
1973 400 170/185 HP X3 A 8.0 255 4X 1-2 7043060/61
1973 400 170/185 HP X4 A 8.0 255 4X 1-2 7043060/66
1973 400 170/185 HP Y1 A 8.0 255 4X 1-2 7043066/67
1973 400 170/185 HP YP A 8.0 555 4X 1-2 7043060
1973 400 170/185 HP YX A 8.0 255 4X 1-2 7043060/61
1973 400 170/185 HP YZ A 8.0 255 4X 1-2 7043070
1973 400 170/185 HP Y4 A 8.0 255 4X 1-2 7043066
1973 400 170/185 HP ZK A 8.0 255 4C 1-2 7043061
1973 400 170/185 HP ZX A 8.0 255 4X 1-2 7043060/61
1973 400 200/230 HP WK M 8.0 067 4X 1-4 7043263
1973 400 200/230 HP WS M 8.0 067 4X 1-4 7043263
1973 400 200/230 HP WP M 8.0 067 4X 1-4 7043263
1973 400 200/230 HP YN A 8.0 066 4X 1-4 7043262
1973 400 200/230 HP YX A 8.0 066 4X 1-4 7043264/66
1973 400 200/230 HP YT A 8.0 066 4X 1-4 7043274
1973 400 200/230 HP Y3 A 8.0 066 4X 1-4 7043264
1973 400 200/230 HP ZN A 8.0 066 4X 1-4 7043264
1973 400 200/230 HP ZS A 8.0 066 4X 1-4 7043266
1973 400 200/230 HP XK A 8.0 066 4X 1-4 7043274
1973 400 200/230 HP XN A 8.0 066 4X 1-4 7043264
1973 400 200/230 HP XX A 8.0 066 4X 1-4 7043264/66
1973 400 200/230 HP XZ A 8.0 066 4X 1-4 7043266
1973 400 200/230 HP X5 A 8.0 066 4X 1-4 7043264/66
1973 400 200/230 HP YF M 8.0 067 4X 1-4 7043263
1973 400 200/230 HP YG M 8.0 067 4X 1-4 7043263
1973 400 200/230 HP Y6 M 8.0 067 4X 1-4 7043263
1973 455 215/250 HP WT M 8.0 067 4X 1-4 7043265
1973 455 215/250 HP WW M 8.0 067 4X 1-4 7043265 4 speed
1973 455 215/250 HP ZZ M 8.0 067 4X 1-4 7043265
1973 455 215/250 HP ZE M 8.0 067 4X 1-4 7043265
1973 455 215/250 HP YA A 8.0 067 4X 1-4 7043272
1973 455 215/250 HP YC A 8.0 067 4X 1-4 7043262
1973 455 215/250 HP YD A 8.0 067 4X 1-4 7043272
1973 455 215/250 HP YK A 8.0 067 4X 1-4 7043272
1973 455 215/250 HP ZA A 8.0 067 4X 1-4 7043262
1973 455 215/250 HP ZC A 8.0 067 4X 1-4 7043262
1973 455 215/250 HP XA A 8.0 067 4X 1-4 7043262
1973 455 215/250 HP XE A 8.0 067 4X 1-4 7043262
1973 455 215/250 HP XJ A 8.0 067 4X 1-4 7043262
1973 455 215/250 HP XL A 8.0 067 4X 1-4 7043262
1973 455 215/250 HP XY A 8.0 067 4X 1-4 7043262
1973 455 215/250 HP XT A 8.0 067 4X 1-4 7043262
1973 455 215/250 HP X7 A 8.0 067 4X 1-4 7043272
1973 455 215/250 HP XO A 8.0 067 4X 1-4 7043272
1973 455 215/250 HP YE A 8.0 067 4X 1-4 7043272
1973 455 SD 290 HP ZJ M 8.0 323 16/485216 1-4 7043273
1973 455 SD 290 HP XD A 8.0 323 16/485216 1-4 7043270
1973 455 SD 310 HP non-prod. Z8 M 8.0 323 16/485216 1-4 7043273
1973 455 SD 310 HP non-prod X8 A 8.0 323 16/485216 1-4 7043270
1974 350 155/170 HP WA M 7.6 555 4C 1-2 7044071 A.I.R.
1974 350 155/170 HP WB M 7.6 555 4C 1-2 7044071 A.I.R.
1974 350 155 HP AA A 7.6 555 46 1-2 7043072 Alt.
1974 350 155/170 HP YA A 7.6 555 46 1-2 7043062
1974 350 155/170 HP ZA A 7.6 957 4C 1-2 7043063 A.I.R.
1974 350 155/170 HP YB A 7.6 555 46 1-2 7043062
1974 350 155/170 HP YC A 7.6 555 46 1-2 7043062
1974 350 155/170 HP ZB A 7.6 957 4C 1-2 7043063 A.I.R.
1974 350 200 HP YP A 8.0 066 46 1-4 7044268 GTO
1974 350 200 HP YS A 8.0 066 46 1-4 7044268 GTO
1974 350 170/200 HP WN M 7.6 555 4C/46 1-4 7044269
1974 350 200 HP WP M 8.0 066 46 1-4 7044269 GTO
1974 350 200 HP ZP A 8.0 597 46 1-4 7044568 GTO CA.
1974 350 170 HP YN A 7.6 555 4C/46 1-4 7044268
1974 400 190 HP AH A 8.0 255 4X 1-2 7043070 Alt.
1974 400 190 HP YH A 8.0 255 4X 1-2 7044066
1974 400 190 HP YJ A 8.0 255 4X 1-2 7044066/60 Wagon
1974 400 190 HP ZH A 8.0 266 4X 1-2 7044067 A.I.R.
1974 400 190 HP ZJ A 8.0 266 4C 1-2 7044066 A.I.R. Ca.
1974 400 190 HP AD A 8.0 255 4X 1-2 7043070 Alt.
1974 400 190 HP YF A 8.0 255 4X 1-2 7044066
1974 400 190 HP YK A 8.0 255 4X 1-2 7044066/60 Wagon
1974 400 190 HP ZD A 8.0 266 4X 1-2 7044067 Ca.
1974 400 190 HP ZK A 8.0 266 4X 1-2 7044067 Ca.
1974 400 225 HP WT M 8.0 067 4X 1-4 7043263
1974 400 225 HP WR M 8.0 067 4X 1-4 7043263
1974 400 225 HP Y3 M 8.0 066 4X 1-4 7043263
1974 400 200 HP AT A 8.0 066 4X 1-4 7044274 Alt.
1974 400 200 HP YT A 8.0 066 4X 1-4 7044266
1974 400 200 HP YZ A 8.0 066 4X 1-4 7044266 Unititized Dist
1974 400 200 HP ZT A 8.0 066 4X 1-4 7044266 Ca.
1974 400 200 HP YL A 8.0 066 4X 1-4 7044266
1974 400 200 HP YM A 8.0 066 4X 1-4 7044266
1974 400 200 HP ZS A 8.0 066 4X 1-4 7044266 Ca.
1974 455 250 HP AU A 8.0 067 4X 1-4 7044272 Alt.
1974 455 250 HP YR A 8.0 067 4X 1-4 7044262 Ca.
1974 455 250 HP YU A 8.0 067 4X 1-4 7044262
1974 455 250 HP YW A 8.0 067 4X 1-4 7044262 Unititized Dist
1974 455 250 HP YX A 8.0 067 4X 1-4 7044262
1974 455 250 HP YY A 8.0 067 4X 1-4 7044262
1974 455 250 HP ZU A 8.0 067 4X 1-4 7044262 Ca.
1974 455 250 HP ZW A 8.0 067 4X 1-4 7044262 Ca.
1974 455 250 HP ZX A 8.0 067 4X 1-4 7044560 Ca. Unititized Dist
1974 455 250 HP A4 A 8.0 067 4X 1-4 7044374 Alt.
1974 455 250 HP Y4 A 8.0 067 4X 1-4 7044262
1974 455 250 HP Y6 A 8.0 067 4X 1-4 7044262
1974 455 250 HP Y9 A 8.0 067 4X 1-4 7044262
1974 455 250 HP Z4 A 8.0 067 4X 1-4 7044262 Ca.
1974 455 250 HP Z6 A 8.0 067 4X 1-4 7044262 Ca.
1974 455 SD 290 HP W8 M 8.4 323 16 (6H) 1-4 7044273
1974 455 SD 290 HP Y8 A 8.4 067 16 (6H) 1-4 7044270
1975 350 155 HP YB A 7.6 555 5C 1-2 7045171
1975 350 155 HP YA A 7.6 555 5C 1-2 7045162
1975 350 155 HP YK A 7.6 555 5C 1-2 7045162
1975 350 175 HP WN M 7.6 555 5C 1-4 7045269
1975 350 175 HP YN A 7.6 555 5C 1-4 7045269
1975 350 175 HP ZP A 7.6 555 5C 1-4 7045268/568
1975 400 170 HP YH A 7.6 266 5C 1-2 7045160
1975 400 185 HP WT M 7.6 067 5C 1-4 7045263
1975 400 185 HP YS A 7.6 066 5C 1-4 7045274
1975 400 185 HP YT A 7.6 066 5C 1-4 7045266/64
1975 400 170 HP Y9 A 7.6 255 5C 1-2 7045167
1975 400 170 HP YJ A 7.6 266 5C 1-2 7045161
1975 400 185 HP ZT A 7.6 066 5C 1-4 7045564 A.I.R.
1975 400 185 HP YM A 7.6 066 5C 1-4 7045264
1975 455 200 HP WX M 7.6 067 5C 1-4 7045263 455 HO
1975 455 200 HP YU A 7.6 067 5C 1-4 7045260/562
1975 455 200 HP ZU A 7.6 067 5C 1-4 7045562/566 A.I.R.
1975 455 200 HP ZW A 7.6 067 5C 1-4 7045562/566 A.I.R.
1976 350 160 HP (Early) YB A 7.6 254 6X 1-2 17056161/63/71
1976 350 160 HP (Early) YA A 7.6 254 6X 1-2 17056161/63
1976 350 160 HP (Early) YP A 7.6 254 6X 1-2 17056161/63/71
1976 350 160 HP (Early) YR A 7.6 254 6X 1-2 17056161/63/71 A/C
1976 350 165 HP (Early) ZX A 7.6 555 6S 1-4 17056568/64
1976 350 160 HP (Late) XM A 7.6 254 6X 1-2 17056161/63/71
1976 350 160 HP (Late) XL A 7.6 254 6X 1-2 17056161/63/71
1976 350 160 HP (Late) XP A 7.6 254 6X 1-2 17056161/63 A/C
1976 350 160 HP (Late) XU A 7.6 254 6X 1-2 17056161/63
1976 350 160 HP (Late) XR A 7.6 254 6X 1-2 17056161/63
1976 350 160 HP (Late) XW A 7.6 254 6X 1-2 17056161/63
1976 350 160 HP (Late) XX A 7.6 254 6X 1-2 17056161/63
1976 350 160 HP (Late) X3 A 7.6 254 6X 1-2 17056161/63
1976 350 165 HP (Late) ZF A 7.6 555 6S 1-4 17056568/64
1976 350 160 HP (Late) ZH A 7.6 254 6X 1-2 17056161/63
1976 400 170 HP (Early) YJ A 7.6 255 6X 1-2 17056160/64
1976 400 170 HP (Early) YC A 7.6 255 6X 1-2 17056160/64 A/C
1976 400 170 HP (Late) X9 A 7.6 255 6X 1-2 17056160/64 A/C
1976 400 170 HP (Late) X4 A 7.6 255 6X 1-2 17056160/64
1976 400 170 HP (Late) XT A 7.6 255 6X 1-2 17056160/64
1976 400 170 HP (Late) XY A 7.6 255 6X 1-2 17056160/64
1976 400 170 HP (Late) XS A 7.6 255 6X 1-2 17056160/64
1976 400 170 HP (Late) XZ A 7.6 255 6X 1-2 17056160/64
1976 400 170 HP (Late) X8 A 7.6 255 6X 1-2 17056160/64 A/C
1976 400 185 HP (Early) WT M 7.6 067 6X 1-4 17056263
1976 400 185 HP (Early) Y6 A 7.6 066 6X 1-4 17056264
1976 400 185 HP (Early) Y7 A 7.6 066 6X 1-4 17056264 A/C
1976 400 185 HP (Early) YS A 7.6 066 6X 1-4 17056264
1976 400 185 HP (Early) YT A 7.6 066 6X 1-4 17056264
1976 400 185 HP (Early) YY A 7.6 066 6X 1-4 17056264 A/C
1976 400 185 HP (Early) YZ A 7.6 066 6X 1-4 17056264 A/C
1976 400 185 HP (Early) ZA A 7.6 066 6S 1-4 17056564
1976 400 185 HP (Early) ZK A 7.6 066 6S 1-4 17056564 Ca.
1976 400 185 HP (Late) WY M 7.6 066 6S 1-4 17056564
1976 400 185 HP (Late) X7 A 7.6 066 6S 1-4 17056564
1976 400 185 HP (Late) ZJ A 7.6 066 6S 1-4 17056564
1976 400 185 HP (Late) ZL A 7.6 066 6S 1-4 17056564
1976 400 185 HP (Late) X6 A 7.6 066 6S 1-4 17056564
1976 455 200 HP WX A 7.6 067 6X 1-4 17056261
1976 455 200 HP Y3 A 7.6 067 6X 1-4 17056262
1976 455 200 HP Y4 A 7.6 067 6X 1-4 17056262
1976 455 200 HP Z3 A 7.6 067 6S 1-4 17056556 Ca.
1976 455 200 HP Z4 A 7.6 067 6S 1-4 17056556
1976 455 200 HP Y8 A 7.6 067 6X 1-4 17056262
1976 455 200 HP ZB A 7.6 067 6X 1-4 17056556 Ca.
1977 301 135 HP WB M 8.2 868 01 1-2 17057173
1977 301 135 HP YW A 8.2 868 01 1-2 17057172
1977 301 135 HP YX A 8.2 868 01 1-2 17057172
1977 301 135 HP YH A 8.2 868 01 1-2 17057172
1977 301 135 HP YK A 8.2 868 01 1-2 17057172
1977 350 170 HP YA A 7.6 793 6X 1-4 17057262
1977 350 170 HP YB A 7.6 793 6X 1-4 17057262
1977 350 170 HP XB A 7.6 793 6X 1-4 17057262
1977 350 170 HP XC A 7.6 793 6X 1-4 17057262
1977 350 170 HP Y9 A 7.6 793 6X 1-4 17057262 FB
1977 400 180 HP XH A 7.6 793 6X 1-4 17057274
1977 400 180 HP XJ A 7.6 793 6X 1-4 17057274
1977 400 180 HP XD A 7.6 793 6X 1-4 17057274
1977 400 180 HP XF A 7.6 793 6X 1-4 17057274
1977 400 180 HP YU A 7.6 793 6X 1-4 17057274
1977 400 180 HP Y4 A 7.6 793 6X 1-4 17057274
1977 400 180 HP XA A 7.6 793 6X 1-4 17057274 FB
1977 400 180 HP Y7 A 7.6 793 6X 1-4 17057274 Wagon
1977 400 180 HP XK A 7.6 793 6X 1-4 17057274
1977 400 200 HP WA M 8.0 431 6X 1-4 17057263 Firebird
1977 400 200 HP Y6 A 8.0 112 6X 1-4 17057266 Firebird
1978 301 140 HP XA A 8.2 471 01 1-2 17058160
1978 301 140 HP XC A 8.2 471 01 1-2 17058160
1978 301 140 HP XL A 8.2 471 01 1-2 17058160
1978 301 140 HP YM A 8.2 471 01 1-2 17058160
1978 301 140 HP XD A 8.2 471 01 1-2 17058160
1978 301 140 HP XB A 8.2 471 01 1-2 17058160
1978 301 140 HP YL A 8.2 471 01 1-2 17058160
1978 301 140 HP YP A 8.2 471 01 1-2 17058160
1978 301 150 HP XF A 8.2 464 02 1-4 17058272
1978 301 150 HP XH A 8.2 464 02 1-4 17058272
1978 301 150 HP XU A 8.2 464 02 1-4 17058272
1978 301 150 HP XW A 8.2 464 02 1-4 17058272
1978 400 180 HP XJ A 8.2 471 6X 1-4 17058274
1978 400 180 HP XK A 8.2 471 6X 1-4 17058274
1978 400 180 HP X9 A 8.2 471 6X 1-4 17058274
1978 400 180 HP YK A 8.2 471 6X 1-4 17058264
1978 400 180 HP YH A 8.2 471 6X 1-4 17058264
1978 400 180 HP YS A 8.2 471 6X 1-4 17058264
1978 400 180 HP YT A 8.2 471 6X 1-4 17058264
1978 400 180 HP YJ A 8.2 471 6X 1-4 17058264
1978 400 180 HP YR A 8.2 471 6X 1-4 17058264
1978 400 180 HP YW A 8.2 471 6X 1-4 17058264
1978 400 180 HP YA A 7.7 471 6X 1-4 17058276/78 FB
1978 400 180 HP YU A 7.7 471 6X 1-4 17058276/78 FB
1978 400 220 HP WC M 8.1 402 6X 1-4 17058263 FB W72
1978 400 220 HP X7 M 8.1 402 6X 1-4 17058266 FB W72
1979 301 135 HP PX7 A 8.2 424 01 1-2 17059160
1979 301 135 HP PX9 A 8.2 424 01 1-2 17059160
1979 301 135 HP PXF A 8.2 424 01 1-2 17059160
1979 301 135 HP PXH A 8.2 424 01 1-2 17059160
1979 301 135 HP PXP A 8.2 424 01 1-2 17059160
1979 301 135 HP PXR A 8.2 424 01 1-2 17059160
1979 301 150 HP PWA M 8.2 471 02 1-4 17059271
1979 301 150 HP PWB M 8.2 471 02 1-4 17059271
1979 301 150 HP PX4 A 8.2 424 02 1-4 17059272
1979 301 150 HP PX6 A 8.2 424 02 1-4 17059272
1979 301 150 HP PXL A 8.2 424 02 1-4 17059272
1979 301 150 HP PXN A 8.2 424 02 1-4 17059272
1979 301 150 HP PXS A 8.2 424 02 1-4 17059272
1979 301 150 HP PXT A 8.2 424 02 1-4 17059272
1979 301 150 HP PXU A 8.2 424 02 1-4 17059272
1979 301 150 HP PXW A 8.2 424 02 1-4 17059272
1979 400 220 HP PWH M 8.1 402 6X 1-4 17059263 FB W72 Last Pontiac 400's
8
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Web www.wallaceracing.com
PONTIAC POWER RULES ! ! !
Pontiac Cylinder Head Codes
Wallace Racing If you know the code number, try my new head search
Chart to mill Pontiac Cylinder Heads
Pontiac made closed chambered heads until 1967.
In 1967 Pontiac made some open chamber heads(i.e. 061).After 1967 the heads were open chamber heads.
Exhaust Crossover Port Matchings
With Head And Manifold Use Gasket
1965-71 1965-71 1965-71
1965-71 1972-79 1972-79
1972-79 1972-79 1972-79
1972-79 1965-71 1965-71**
** Use sheet stainless steel block off plate.
In 1973 Pontiac started stamping extra numbers (1/4" tall) on their heads.These head numbers represented chamber sizes.They are usually stamped on the machined pads by the valve covers.
Head ID Location
1973/74 Stampings on Head codes - 4X, 46, 4C, 16/X
Stamped ID Head # Code MVMA Chamber Vol. Valve Diameter Valve Length CID
1H / 1 4X 112.30 cc's 2.11/1.66 valve 4.78" 455
2H 46 96.17 cc's 1.96/1.66 valve 4.86" 350
3H / 3 4X 98.21 cc's 2.11/1.66 valve 4.86" 400
4H / 4 4X 98.94 cc's 1.96/1.66 valve 4.86" 350/400
5H 4C (AIR) 96.17 cc's 1.96/1.66 valve 4.86" 350
6H 46 96.17 cc's 1.96/1.66 valve 4.86" 350
6H 16/X 110.74 cc's 2.11/1.77 valve 4.97" 455 SD
7H 4X 98.21 cc's 2.11/1.66 valve 4.86" 400
8H / 8 4C (AIR) 98.94 cc's 1.96/1.66 valve 4.86" 400
*All rocker arms are threaded beginning with Motor Unit Number 709986 assembled on or about May 7, 1973.
1975 (early) Stampings on Head codes - 5C / 51 (5I)
Stamped ID Head # Code MVMA Chamber Vol. Valve Diameter Valve Length CID
4 5C 93.74 cc's 2.11/1.66 valve 4.86" 350
6 5C / 51 124.51 cc's 2.11/1.66 valve 4.71" 455
7 5C (AIR) 100.04 cc's 2.11/1.66 valve 4.86" 400
8 5C 100.04 cc's 2.11/1.66 valve 4.86" 400
9 5C (AIR) 93.74 cc's 2.11/1.66 valve 4.86" 350
1975/79 Stampings on Head codes - 6X / 6H
Year Stamped ID Head # Code MVMA Chamber Vol. Valve Diameter Valve Length CID
1975-76 4 6X 93.74 cc's 2.11/1.66 valve 4.86" 350
6 6X 124.51 cc's 2.11/1.66 valve 4.71" 455
6 6H 124.51 cc's 2.11/1.66 valve 4.71" 455
7 6S (AIR) 100.04 cc's 2.11/1.66 valve 4.86" 400
8 6X 100.04 cc's 2.11/1.66 valve 4.86" 400
9 6S (AIR) 93.74 cc's 2.11/1.66 valve 4.86" 350
1977 4 6X 93.74 cc's 2.11/1.66 valve 4.86" 350 / 400 W72
8 6X 100.04 cc's 2.11/1.66 valve 4.86" 400
1978 8 6X 100.04 cc's 2.11/1.66 valve 4.86" 400
1978/79 4 6X 93.74 cc's 2.11/1.66 valve 4.86" 400 W72
Pontiac Intake Manifold Years Interchange
- 1957-1958
- 1959-1960
- 1961-1964
- 1965-1979
Cylinder Heads
Year(s) Engine HP Rating Head # Valve Size CC or CR
1955 287 192, 205, 216, 227 HP 518024 1.72 / 1.50
1956 317 192, 205, 216, 227 HP 522010 1.72 / 1.50 Standard head milled 0.072"
also provides 10:1 compression
(285 HP engine) per Factory Bulletin
317 285 HP (2x4V) 522845 1.72 / 1.50
1957 347 227,244,252,270,290 HP 523298 1.88 / 1.60
347 317 HP (F.I.) 52(4852) 1.88 / 1.60 Last 4 digits stamped on O.E. install
1958 370 528511 1.88 / 1.60
370 T395A X528511O 1.88 / 1.60
370 F.I. XX528511XX 1.88 / 1.60
1959 389 215-345HP 531395 1.88/1.60 69
1960 389 215-345HP 536109 1.88/1.60 69
389SD 348-363HP 535461 1.92/1.60 69
1961 389 all 538177 1.88/1.60 69
421 all 538177 1.88/1.60 69
389SD 368/373HP 540306 1.92/1.66 68
421SD 368/373HP 540306 1.92/1.66 68
1962 389 all 538177 1.88/1.60 69
421 all 538177 1.88/1.60 69
389SD 385/405HP 540306/544127 1.92/1.66;2.02/1.76 68
421SD 385/405HP 540306/544127 1.92/1.66;2.02/1.76 68
1963 326 250HP 543797 1.88/1.60 8.6 c.r.
326 260/280HP 548232 1.88/1.60 10.25 c.r.
389 215/230/235HP 543796 1.88/1.60 8.6 c.r.
389 267/283/303/313HP 543797 1.88/1.60 10.25 c.r.
421 320HP 543797 1.88/1.60 10.75 c.r.
421 353/370HP 9770716 1.92/1.66 72
421SD 390/405/410HP 544127/9771980 2.02/1.76 64
1964 326 250HP 9773345 (845) 1.88/1.60 8.6 c.r.
326 280HP 9773395 1.88/1.60 10.0 c.r.
389 215/230/235HP 5437796 1.88/1.60 8.6
389 267/283/303/306HP 9773345/(845) 1.92/1.66 10.5 c.r.
421 320HP 9773345/(834) 1.92/1.66 10.75 c.r.
389 325/330/348HP 9770716 1.92/1.66 72
421 350/370HP 9770716 1.92/1.66 68
1965 326 250HP 62 / 9780562 1.88/1.60 8.6 c.r.
326 285HP 22 / 9778922 1.88/1.60 10.5 c.r.
389 256HP 75 / 9778775 1.88/1.60 8.6 c.r.
389 290/325/333HP 76 / 9778776 1.92/1.66 10.5 c.r.
389 335/338/360HP 77 / 9778777 1.92/1.60 10.5 c.r.
421 338HP 76 / 9778776 1.92/1.66 10.75 c.r.
421 356/376HP 77 / 9778777 1.92/1.60 10.75 c.r.
1966 326 250HP 094 1.92/1.66 9.2 c.r.
326 285HP 095 1.92/1.66 10.5 c.r.
389 256HP 091 1.92/1.66 8.6 c.r.
389 290/325/333HP 092 1.92/1.66 10.5 c.r.
389 335/360HP 093 1.92/1.66 10.5 c.r. 68cc
421 338/350HP 092 1.92/1.66 10.75 c.r. 70 cc
421 356/376HP 093 1.92/1.66 10.75 c.r. 68 cc
1967 326 250HP 140 1.92/1.64 9.2 c.r.
326 285HP 141 1.92/1.64 10.5 c.r.
400 255/260/265HP 142 1.92/1.64 8.6 c.r.
400 290HP 143/061 1.92/1.64 10.5 c.r.
400 325/333HP Big Car 143/061 1.92/1.64 10.5 c.r.
400 350HP(GP) 670/9787671/187 2.11/1.77 10.5 c.r. 72 cc
400 325/335/360HP 670 2.11/1.77 72 cc
400 325/360HP RA 670/97 2.11/1.77 72 cc
428 360/376HP 670/9787671 2.11/1.77 72 cc
1968 350 265HP 17 1.96/1.66 8.6 c.r.
350 320HP 18 1.96/1.66 10.5 c.r.
400 265HP 14 1.96/1.66 8.6 c.r.
400 290/340HP Big Car 15/215 1.96/1.66 10.5 c.r.
400 350HP (GP) 16/216/62 2.11/1.77 72-75 cc
400 330HP (FB) 16/216/62 2.11/1.77 72-75 cc
400 335/350/360HP 16/62 2.11/1.77 72-75 cc
400 335/360HP RA I 31/(37) 2.11/1.77 72 cc
400 340(FB)/366(GTO) R/96/A(RA II) 2.11/1.77 72cc/rd port
428 375HP 16/216 2.11/1.77 72cc
428 390HP 16/216 2.11/1.77 72cc
1969 350 265HP 47 1.96/1.66 8.6 c.r.
350 325HP 48 2.11/1.77 10.5 c.r.
400 265HP 45 1.96/1.66 8.6 c.r.
400 290HP 46 1.96/1.66 10 c.r.
400 340HP(GP) 16/62 2.11/1.77 72 cc
400 330,335,350/366HP 16/62/48(MT) 2.11/1.77 72cc
400 345(FB)/370(GTO) 722(RA-IV) 2.11/1.77 71 cc
428 360HP 16(small-valve)46 1.96/1.66 10 c.r.
428 370HP (GP) 62 2.11/1.77 72 cc
428 390 HP 16/62 2.11/1.77 72 cc
400 375HP(RA-V) 44 Tunnel Port 2.11/1.77 67cc
303 RA=V Tunnel Port 546184 2.11/1.77 56cc
1970 350 255HP 11 1.96/1.66 8.8 c.r.
400 265HP 11 1.96/1.66 8.6 c.r.
400 290HP 16(sm valve) 1.96/1.66 10 c.r.
400 330HP Big Car 16 1.96/1.66 10 c.r.
400 330HP 12(m.t.) 2.11/1.77 72cc
400 330HP 13(a.t.) 2.11/1.77 72cc
400 345HP(FB/RAIII) 12 2.11/1.77 72cc
400 350HP(GP) 13 2.11/1.77 72cc
400 350HP(GTO) 12(MT) 2.11/1.77 72cc
400 350HP(GTO) 13(AT) 2.11/1.77 72cc
400 366HP(GTO) 12(RA III) 2.11/1.77 72cc
400 370HP(RA IV) 614(rd port) 2.11/1.77 71cc
455 360HP Big Car 15 1.96/1.66 87cc
455 360/370HP(GTO/GP) 64 2.11/1.77 87cc
1971 350 250HP 94 1.96/1.66 96cc
400 265HP 99 1.96/1.66 98cc
400 300HP 96 2.11/1.77 96cc
455 280HP 98 1.96/1.66 114cc
455 325HP 66 2.11/1.77 114cc
455 335HP (455HO) 197(191) rd port 2.11/1.77 111cc
1972 350 175HP 7h1 1.96/1.66 7.6cr
400 200HP 7j2 1.96/1.77 8.4cr
400 250HP 7k3 2.11/1.77 96cc
455 200HP 7L4 2.11/1.77 114cc
455 250HP 7M4 2.11/1.77 114cc
455 250HP 7M5 2.11/1.77 114cc
455 300HP(455HO) 7F6 rd port 2.11/1.77 111cc
1973 350 150/175HP 46/4c 1.96/1.66 96cc
400 170/185HP 46/4c 1.96/1.66 98cc
400 200HP 4x/4c 2.11/1.66 98cc
400 230HP 4x/screw-in stud 2.11/1.66 98cc
455 215/250HP 4x/screw-in stud 2.11/1.66 114cc
455 290HP(455SD) 16/X(rd port) 2.11/1.77 111cc
1974 350 155/170HP 46/4c 1.96/1.66 7.6cr
350 200HP(GTO) 46(screw-in studs) 1.96/1.66 7.6cr
400 175/190HP 46/4c 1.96/1.66 8.1cr
400 200HP 4x/4c 1.96/1.66 98cc
400 225HP(AT) 4x(screw-in stud) 2.11/1.66 98cc
400 225HP(AT) 4c 2.11/1.66 98cc
400 225HP(MT) 4x(screw-in stud) 2.11/1.66 98cc
455 215/250 4x(screw-in stud) 2.11/1.66 114cc
455 215/250 4c 2.11/1.66 114cc
455 290HP(455SD) 16/X(rd port) 2.11/1.77 111cc
1975 350 ALL 5c 2.11/1.66 7.6cr
400 ALL 5c/6s 2.11/1.66 7.6cr
455 AIR 6s 2.11/1.66 7.6cr
350 HO/non-air 6h 2.11/1.66 7.6cr
1976 350 ALL 6X/6S 2.11/1.66 7.6cr
400 ALL 6X/6S 2.11/1.66 7.6cr
455 AIR 6S 2.11/1.66 7.6cr
455 HO/non-air 6H 2.11/1.66 7.6cr
1977 301 ALL 01 1.72/1.50 8.2cr
350 ALL 6X/6S 2.11/1.66 7.6cr
400 180HP 6X 2.11/1.66 7.6cr
400 200HP 6X 2.11/1.66 8.0cr
1978 301 ALL 01/02 1.72/1.50 8.2cr
350 ALL 6X/6S 2.11/1.66 7.6cr
400 180HP 6X 2.11/1.66 7.6cr
400 220HP 6X 2.11/1.66 8.1cr
1979 301 ALL 01 1.72/1.50 8.2cr
400 ALL 6X 2.11/1.66 8.1cr
8
87vette81big
Guest
PONTIAC POWER RULES ! ! !
Pontiac Factory Cam Specs
Home Tech Articles
Pontiac Camshaft Specs
Int. Exh.
Application Stamp Dur. CL 1.50:1 1.65:1 O.L. Dur. CL 1.50:1 1.65:1 Part #
1956 289 110.5 .406" .446" 71 298 112 .406" .446" 522869
1959-63 2bbl A 252 112 .324" .356" 38 252 112 .324" .356" 518111
1959-62 4bbl 4 273 106 .407" .447" 55 282 116 .411" .452" 529472
1963-64 4bbl D 273 106 .407" .447" 55 282 116 .411" .452" 529472
1965-76 V8 N 273 107 .407" .447" 55 283 116 .407" .447" 9779066
1973-74 2bbl 5 269 108.5 .374" .411" 55 277 109.5 .407" .447" 491255
1974-75 2bbl - 269 108 .374" .411" 59 282 108 .408" .447" 491266
1973-76 2bbl W 269 108.5 .374" .411" 51 277 113.5 .407" .447" 483555
1967-69 2bbl V8 U 269 112.5 .375" .413" 47 277 113.5 .410" .454" 9777254
1975-76 V8 - 269 112.5 .374" .411" 47 277 113.5 .407" .447" 483555
1965-76 4bbl P 273 112 .407" .447" 54 289 113 .407" .447" 9779067
1964 GTO or 421 C 273 113 .407" .447" 54 289 113 .407" .447" 524009
1978-79 TA 6.6 @ (circled A) 274 118.5 .395" .434" 54 298 108.5 .401" .440" 10003402
1977 Manual T/A 6.6 (WA) ❑ (square) 274 116 .364" .400" 62 298 108 .404" .445" 549431
1977 Auto TA 6.6 (Y6) O 274 121 .364" .401" 55 298 110 .405" .440" 549112
1978 std engine - 274 - .374" .410" - 274 - .374" .410" 527471
1956-62 3/2bbl 6 283 112 .407" .447" 60 293 116 .407" .447" 524886
1963-64 421 HO L 293 113 .407" .447" 63 301 119 .407" .447" 9770543
1965-72 HO S 288 113 .407" .447" 63 302 119 .407" .447" 9779068
1966-69 RA H 301 113 .407" .447" 76 313 118 .407" .447" 9785744
1973-74 455SD Y 301 113 .407" .447" 76 313 118 .407" .447" 493323
1968L-70 RAIV T 308 112 .470" .516" 87 320 115 .470" .516" 9794041
(1973 455 SD) K 308 112 .470" .516" 87 320 115 .470" .516" 480737
Mechanical Cams
1969 RAV V 308 112 .453" .498" 87 320 115 .447" .492" 545713
1960 389 SD 7 300 112 .405" .447" 75 304 115 .404" .446" 535480
1961-62 389 SD 8 308 112 .405" .447" 83 312 115 .404" .446" 540233
1962-63 421 SD 10 308 112 .405" .447" 87 320 115 .404" .446" 541596
1963 421 SD 11 312 112 .405" .447" 91 324 115 .404" .446" 542992
1963 421 SD 12 308 112 .405" .447" 89 324 115 .404" .446" 545319
Roller Cams
Application Stamp Int
Dur. CL 1.50:1 1.65:1 O.L. Exh
Dur. CL 1.50:1 1.65:1 Part #
1969 RA VI
(and VII?) 308 110 .531" .586" 91 ? 320 110 .536" .590" P1M310C
8
87vette81big
Guest
The 1956 Pontiac 316 Ci V8 had a factory installed camshaft with 71 degrees overlap Grumpy !
No wonder old magazine articles talked about Poncho Power Torque for the 2nd Year New V8 !
No wonder old magazine articles talked about Poncho Power Torque for the 2nd Year New V8 !
8
87vette81big
Guest
Pontiac used Turbocharger friendly csmshafts in 1977-79 too Grumpy.
118.5 -121 degree lobe centerline angles.
They intentionally set the path for the MECUM MACHO TURBO TRANS AM AND FORMULA FIREBIRD.
Actually used HO RACING SINGLE TURBO CHARGER KITS Installed by the MECUM Brothers .
118.5 -121 degree lobe centerline angles.
They intentionally set the path for the MECUM MACHO TURBO TRANS AM AND FORMULA FIREBIRD.
Actually used HO RACING SINGLE TURBO CHARGER KITS Installed by the MECUM Brothers .
I'll give you 100 points for the unique thread title, great job - I owe you.
It's a book about Pontiac racing, not Area 51 Secret files or where is Jimmy Hoffa!
NOT A TA
reliable source of info
I once bought a 70 Bonneville for the 455 that was in it. Was gonna swap the original 350 from my bird into it and put the 455 in the bird. Someone offered me double what I bought the Bonneville for the next day..... Sold! Seemed like a good idea at the time.....
So the number that tells you what cylinder head you have is real small in one spot above a spark plug? I thought that number was more obvious. I wish I could see the number "15" on your Bonniville motor heads, I think it's the only one you missed highlighting. I still need to see a list from one end to the other for desirability.
8
87vette81big
Guest
My late bud said he met Hoffa once.
He worked on diesels also.
Not long afterwards he said an accident occured.
Maybe where Capone stuck his unwanwanted.
A bridge pier being poured.
In a concrete floor.
In a cornfield somewhere .
He worked on diesels also.
Not long afterwards he said an accident occured.
Maybe where Capone stuck his unwanwanted.
A bridge pier being poured.
In a concrete floor.
In a cornfield somewhere .
I don't know why everybody made such a big deal over where Hoffa's buried. It was pre-DNA crime detection days then, the mob likely tossed him somewhere in the New Jersy Pine Barrens.
8
87vette81big
Guest
I will try and get pictures this week.
Highlight part casting numbers with my favorite Bright Pink paint pen.
Its flipped upside down now on one of my engine stands.
That way the Mice can't get inside of it.
Highlight part casting numbers with my favorite Bright Pink paint pen.
Its flipped upside down now on one of my engine stands.
That way the Mice can't get inside of it.