GRAND PRIX Pontiac V8 with Edelbrock RPM

Bonnewagon

Bonnewagon

Geezer
Sep 18, 2009
6,303
113
Queens, NY
I read the Performer was just an aluminum version equivalent to the stock Pontiac cast iron manifold. The Performer RPM was a tiny bit better but at a clearance cost. FWIW independent testing by Jim Hand and others has determined that the stock Pontiac cast iron unit was just about perfect for a Pontiac motor and even the Pontiac SD/RA aluminum versions were not a whole lot better. If you are not going balls out racing I would stick to a stock Pontiac or the Performer. http://silverstatepontiacs.com/jharticles/jharticles14.html
 
TURNA

TURNA

Geezer
Jul 24, 2009
8,720
113
Socialist NY
I dream of that.. but was trying to save that conversation for the body shop when the time comes.

If you are debating that intake

THE TIME IS NOW!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 
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78GP400

78GP400

Apprentice
Mar 2, 2017
63
33
Hartville, Ohio
Use it and put a TA shaker on it
Do it! I love mine!
Seriously, I couldn’t fit a Performer on mine with the 400 engine. I couldn’t close the hood without removing the insulation and going to a really low profile ,dropped base air cleaner that was literally robbing me 61 horsepower on the dyno!
That was the main reason, besides the looks, that I did a shaker conversion.
If you want to stay with the stock hood you could also go to a TorkerII manifold instead of a Performer you will gain about an inch and a half of clearance. I’m sure you could find someone to swap you manifolds if that is the direction you want to go.
 

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