1962 421SD Pistons - Pontiac GTO Forum
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post #1 of 1 (permalink) Old 12-05-2017, 03:58 PM Thread Starter
 
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1962 421SD Pistons

I realize this is a GTO forum. Just trying to get this out to as many Pontiac guys as possible.

I'm trying to help a Stock Eliminator racer find a 1962 421SD piston. He is currently running a '62 Cat, with a 389 engine, but wants to build a 421SD engine for it. To do this, he must find an original 1962 421SD piston, to copy. Then a piston company will duplicate that original, and submit it to NHRA for approval. If NHRA approves it, the piston maker will give it a part number and it will be listed by NHRA as a legal replacement for that engine.

So, does anybody have one, know somebody who does, or know somebody who might know somebody that does ?

Last edited by bigD; 12-06-2017 at 01:38 PM.
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, LeMans & GTO Engine Tuning and High Performance

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