two effective sbc combos

grumpyvette

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Staff member
http://purplesagetradingpost.com/sumner/techinfo/350 chevy engine.html

heres some info for the guys wanting a stroker/carb combo

here are the specs: of a well built 383

4-bolt 350 block bored .60 over
eagle 3.75" crank
eagle 6" h-beam rods
wiseco forged flattops with total seal rings--12.5:1 comp.
custom ground comp solid roller
251/260 duration @.50
640/653 lift with the 1.6 roller rockers
109 LSA and 106 ICL
huge brodix single plane--(main reason for "low" tq??)
750 dominator carb worked over, not sure of cfm (another
reason for "low" torque?)
dart pro 1 215cc heads ported with 2.05/1.60 valves
hooker super comp 1 3/4" headers
NOS plate system
full msd ignition and 10.4mm taylor wires
electric water pump, electric fuel pump, and electric fan

the motor also has stud girdles and a rev kit and i went with all forged internals so i can "spray" the poo-poo out of it.
522hp/498tq



heres a well built SBC 406
· Block, 509, +30, Zero deck, Blanked water passages, Clearanced oil ways, Lifter valley vents, ARP main & head studs, Durabond cam & Clevite 77 main bearings.
· Crank, Scat 4340 forged steel, 3.75”, internal balance, Pioneer SFI balancer + ARP bolt.
· Rods, Comp. Products 6.00” H beam bronze bushed + ARP bolts Clevite 77 bearings.
· Pistons, SRP #4032 flat top, 5cc relief, Speed Pro plasma moly file fit rings.
· Complete rotating assembly balanced. Including - Flywheel, Clutch, Balancer & Crank pulley.
· Heads, AFR 210 Race Ready, 76cc, 2.080/1.600 valves, drilled for steam. FelPro #1014 gasket.
· Cam, Comp. Cams ‘Magnum’ #12-450-8 (286HR) Hydraulic roller.
230/230 @ .050, .377 lift 110 LSA 106 ICL.
· Pushrods, Howards Cams heavy wall 5/16” 7.4” long.
· Rockers, Pro Magnum roller, 1.6, 7/16” stud.
· Lifters, Pro Magnum hydraulic roller. AFR Hydr-Rev kit.
· Comp Cams Springs #950 + #740 retainers installed at 1.875”
· AFR rev kit, AFR stud girdle.
· Lube, Melling M99HVS pump, Canton 7qt 5 trap pan with inbuilt windage and scraper, Cooler, Accumulator, oil stat, remote filter.
· Holley 800cfm #4780C, 1” spacer, Victor Jr single plane.
· Static CR 10.32, Dynamic CR 7.9.
· Quench 0.0415” (Gasket .039” + .0025” down hole).
· MSD Pro Billet Street Dizzy, MSD 6AL, MSD Blaster 2 coil, MSD 8,5mm leads.

RPM BHP Torque
3800 367.3 507.7
3900 384.0 517.1
4000 395.1 518.8
4100 407.9 522.5
4200 418.9 523.8
4300 429.4 524.5
4400 439.6 524.7
4500 449.6 524.7
4600 462.1 527.6
4700 467.4 522.3
4800 476.6 521.5
4900 485.4 520.3
5000 489.2 513.9
5100 498.5 513.4
5200 496.0 501.0
5300 506.1 501.5
5400 508.4 494.5
5500 508.7 485.8
5600 505.6 474.2
5700 505.8 466.0
5800 505.8 458.0
5900 494.6 440.3
6000 491.9 430.6
 
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