Aftermarket/Replacement Cylinder Head Rule Change

Paul Merolla · 12-22-2017, 08:21 AM

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

12-22-2017, 08:21 AM	#11
Paul Merolla Senior Member Join Date: Dec 2001 Location: Papillion, NE Posts: 611 Likes: 242 Liked 293 Times in 65 Posts	Re: Aftermarket/Replacement Cylinder Head Rule Change 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