bore size dictates intake valve size which in turn dictates maximum HP potential, the ideal displacement for the maximum HP per CID is much smaller than 500 inches when it comes to the Pontiac V-8.
I'm looking into NHRA Super Stock SS/CS which is 10 pounds per CID, cast iron heads only single 750.the Chevy guys are running the cast Bowtie head (heads must have OE casting #). I think a good OE Pontiac head should be better.
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1989 Automotive Hall of Fame Inductee
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