[Tim Kish]

You think people are crying about the Cobra Jets, allow a ZR1 corvette to run Stock. Since from the factory this car has: Titanium Rods, Titanium Valves, CNC ported heads, a dry sump oil system, tubular exhaust manifolds that are as good as most headers and the same demon blower as the Cobra Jet ( different housing but same size displacement blower). And come to think of it, with all that and at a larger displacement than the Cobra Jet (6.2L vs 5.4) its only rated at 638HP. And to get that 638HP the factory exhaust system has vacuum actuated cutouts to bypass the mufflers.

The key everyone keeps missing is that NHRA's system uses what they call a HP rating but if there is a single car out there that actually only produces the rated HP level it can't run the index. These new performance cars come from the factory with a large percentage of the tricks that get Stockers to the level they are today as legal mods above and beyond the base HP rating. As such they can not be compared on the same scale.