exotic pontiac heads/engines etc.

grumpyvette

grumpyvette

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Some other interesting Pontiac notes;
All Pontiac V8s from 1955 to 1959 were reverse cooled, known as the "gusher" cooling system, the LT1 Chevy's of the '90's.
Ram Air V;

(303, 366, 400, 428) In 1969 Pontiac created several versions of their "tunnel-port" engine: a special short-deck version of the V8 for Trans Am racing and a 400 standard deck version. The factory also experimented with 366 and 428 cu in versions. The cylinder-head was patterned after the highly successful Ford 427 tunnel-port head. So large were the intake ports that the pushrods ran through the center of the ports via pressed-in tubes.

303 - The revised engine had shorter connecting rods, smaller 2.5 in (64 mm) journals, special "tunnel-port" heads, and a solid-lifter version of the 400's Ram Air IV camshaft. It shared the 4.125 in (104.8 mm) bore of the 400, but with a 2.84 in (72 mm) stroke for a displacement of 303 cu in (4.97 L). The short-deck engine weighed about 40 pounds (18 kg) less than the 400, and had an 8000 rpm redline. The 303 program was promising, with race-ready engines producing 475-525 hp (354.4-391.7 kW) and slated for advertised ratings of 355 hp (265 kW) in the Pontiac Firebird and 375 hp (280 kW) for the Pontiac GTO. Concerns about emissions, the response of the automobile safety lobby, and the warranty implications of a high-revving street engine led to its cancellation. SCCA Trans-Am series General Competition Rules required an engine to be a "Production" item, and required a production of no less than 250 units. The total number of Ram Air V 303 engines produced is not known, estimates range from the SCCA required 250 units, up to 500 units, with rumors of a handful of Ram Air V 303's making their way into the Pontiac Trans-Am production line.
Click to expand...
One of the magazines actually tested a "production" '69 Trans Am with a 303, they said the bottom end torque wasn't there like a 400 car but that they mid range acceleration was "Brutal and frightening". The top end wasn't officially clocked because their 5th wheel had broken earlier but they hit 8200 RPM in 4th gear with 3.73 gears and 26" tall tires. That's around 152 MPH! As best I can tell over the years of searching, no Trans Am's were sold to the public in 1969 with the 303 RA V.
Then there are all the OHC V8 motors they designed and tested and actually had several versions production ready before GM brass killed the program.
 
I saved my collection of Pontiac V8 engines.
They are hard to find in Illinois now too.
The supply of Traditional Pontiac V-8 engines has dried up in all salvage yards.
In private collector hands like mine.
The last Pontiac 455 complete running engine and Turbo 400 trans I bought
I drove 250 miles to western Iowa to bring home.
I won it off of ebay. Was a viscious battle to win, 50 bidders at least.
From a 1970 Pontiac Bonneville convertible.
2007 win.

Brian
 
http://www.highperformancepontiac.com/t ... ewall.html
Edelbrock's New High-Flow Victor-Series Cylinder Head For The Pontiac
Description Valve Angle Pushrod Holes Part Number
Victor Pro Port Raw 12.6 degrees Drilled 77819
Victor Pro Port Raw 12.6 degrees Blank 77839
Victor Pro Port Raw 11 degrees Drilled 77829
Victor Pro Port Raw 11 degrees Blank 77849

you Pontiac guys might find this interesting, Edelbrocks been posting info for a few years about coming out with a NEWER Pontiac head casting
but soon to be a production version,(I've yet to see listed??,

http://butlerperformance.com/ (866)762-7527

http://www.edelbrock.com/automotive/ 310-781-2222


did the prep work so because the magazine articles a couple years old id contact them for details
 
There has been dozens of independent Performance Aluminum Pontiac Race style cylinder heads made Grumpy since 1994.
Some tests show over 500 CFM Intake port flow volume @ 28 inches water depression at .700 - 1.00" valve lifts.
Many have been short lived.
Edelbrock, Wenzler, Kaufmann Performance - Tiger Heads have been around the longest & proven.

There were 5 or 6 1969 Pontiac Trans Ams built with the 303 ci V8 & special 303 Ram Air 5 48-52 cc combustion chamber volume cylinder heads.
The engine was developed with John Delorian & Malcomn McKeller working together.
Legend has it 3 of the very special 1969 Trans Am Ram Air 5 303's still exist.
Stashed away in hiding somewhere.
When orders came to destroy development & prototye cars, The Engineers at Pontiac ignored... Cars dissapeared over night & a clunker crushed in its place.

Real Rebels they were.
 
87vette81big said:
I saved my collection of Pontiac V8 engines.
They are hard to find in Illinois now too.
The supply of Traditional Pontiac V-8 engines has dried up in all salvage yards.
In private collector hands like mine.
The last Pontiac 455 complete running engine and Turbo 400 trans I bought
I drove 250 miles to western Iowa to bring home.
I won it off of ebay. Was a viscious battle to win, 50 bidders at least.
From a 1970 Pontiac Bonneville convertible.
2007 win.

Brian
Click to expand...


Brian,
You're going in the wrong direction. Out here I can find plenty of Pontiac motors, 389, 400, 421 (fewest) 428s, lots of 4X & 6X heads. I've been seeing tri-power parts all over. Salvage yards are disappearing all the time here. Always see compactors and shredders brought in to the yards and a week later everything but tires and batteries are gone! And government wont let any new salvage yards start up - anywhere!
 
I am the Musclecar Pontiac Expert Rich.
I sold the Original 1970 455 A/C Compressor on Ebay about 2 years ago complete with all special 1970 AC BRACKETS & CORRECT FACTORY BOLTS.
GLASS BEADED ALL CLEAN & PAINTED 60 % GM GLOSS BLACK.
Started Auction at .99 cents. 7 day run.
Sold for $455.89 .
Shipping paid too of $42.99.
A 1970 GTO Judge Ram Air 3 Orbit Orange Car bought it.
Super hard to find complete today.
I still have the rest of the 1970 455 Pontiac & Original Turbo 400 trans.
Paid $655.
I recouped at least 80%.
Engine alone bare longblock worth at least $1500 today.
High compression too. 1970 only 455 Poncho. 10.25 :1.
 
Stock up on the Smog Era 4X & 6X Heads Rich.
Buy a Dozen sets if you can afford to & have storage Room.
In the future likely worth $1k per pair .
Rebuilt & ready to bolt on.
 
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