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Old 09-15-2021, 12:46 AM   #70
Stan Weiss
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Default Re: Best B.O.P. stock and super stockers of all time

Quote:
Originally Posted by oldskool View Post
Yeah, the factory 428 pistons had a small dish, to reduce CR.

BUT, I noticed that the NHRA specs describes the 428 pistons as "Flat w/notches". Don't mention a dish.

http://www.classracerinfo.com/Engine...0&MAKE=Pontiac

But, in order to get a piston made that NHRA would approve, I assume it would have to be made very similar to the original, including the dish.

But if not, stranger things have happened, concerning NHRA rules.

Look at the next 2 columns after Flat w/notches. Dome/Dish Vol and Dome/Dish Hgt where it says No Spec.


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