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Old 04-12-2019, 01:50 PM   #5
Alan Nyhus
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Join Date: Dec 2002
Location: Lower Dakota territory
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Default Re: Pontiac Cylinder Heads

Quote:
Originally Posted by NSSGTO View Post
Looking at building a legal SS engine for a 66 GTO with a 389. Edelbrock states the 60587 NHRA approved head is legal for a 389. The only info I can find from NHRA states the 092/093 factory castings are legal.
I do not have a new rule book in front of me at this time. Anyone know if these are legal?
Head to Dwight Southerland's site and get registered. There is all the info you'll ever need including technical specs and classification. And it's in a much more presentable form than NHRA has. -Al


http://www.classracerinfo.com/default.aspx
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