Pure Stockers New Camshaft Rule !!!

[kdanner]

Originally Posted by Steve Stickel

IHRA may be ahead of the curve.......
NHRA has just accepted the 2010. 2012, and 2013 Mustang GT (showroom available) into the Classification guide. 227 V6, 4.6 (281)V8, and the 5.0 (302)V8 in different years. IHRA, we can assume will follow suit and accept these also for Stock / Pure Stock. Now the fun begins, DOHC cams 3 or 4 valve per cyl, separate cams for int and ex in each head. Independent Variable valve (cam) timing, the overlap can be in a range of -51 to +49 @.050 depending on what the phasers are doing at a given RPM or in the park (off) position.... A potential Tech Man's Pure Stock nightmare ? or just check lift at the retainer and done, and, 32 itty bitty beehive springs buried under all that OHC stuff...

On principal it's good to see production cars in the guide for a change. But, the 5.0 and 4.6 factoring is way worse than the 5.0 and 4.6 CJs are. Same car, so might as well run the CJ combo. V6 doesn't look good either, and not many would be interested in running one anyway.