Quote:
Originally Posted by Paul Merolla
Boy, I didn't see that coming...aftermarket heads for SBC in Stock. With a 5hp penalty.
NHRA Tech Department makes updates/corrections to the Stock Car Classification Guide
Jan. 1, 2018
The NHRA Technical Department recently made changes to the Class Guide.
Buick 98-99 added missing pages to website
Chev 62-79 added SBC replacement heads for Stock
Chev 2015 Camaro 376 365 corrected shipping weight Stk/SS
Chev 1969 Corvette 350 300 separated auto/man transmission
Ford 2010 330 500 added Stock weight breaks
Ford 2012 330 510 added Stock weight breaks
Plym 1968 Barracuda 426 425/505 separated from non SS/AH
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I looked up one of the Edelbrock heads for a SBC and it listed 185cc intake runner, the others were 172cc to 175cc intake runner. NHRA specs are 172cc intake and 65cc exhaust, how in the world can a stock racer use replacement heads that are so far out of whack from each other?