2013 GT500 vs 2013 ZL1. good article

[Stefano]

The ZL1 in stock form puts out approx 500rwhp

The Shelby in stock form on the same day and same dyno lays down more than 600rwhp.

100 plus more HP in a production car comparison is Huge!

The Shelby GT 500 is also over 200 pounds lighter. (2 tenths in the 1/4 right there.)

An extra 100hp and less weight is going to help get a car around a road course as well.

The bar has been raised. No reason that a hopped up LS9 can't be dropped into the Camaro,at the factory, other than some lame a$$ marketing ploy the the Corvette has to be the only Car in the GM line up with the best power plant.

Remember the good old days when you could get the best GM engines, in the Pony and Muscle cars?