GM Releases 2013 bogus HP ratings at PRI show

[Alan Roehrich]

Originally Posted by Rat Raceway

Both cars your quoting are NOTHING like they came from Chevy.
There is NO WAY that is the stock GM tune! Or engine,cam, gears, trans, vert, axles, driveshaft and the list goes on... They will not 1.3x 60' stock!!!

The COPO cars are fast from chevy, but again NOTHING like Cazzette or Patterson.

I'm not arguing, it's just apples and oranges comparing what comes off the floor and the cars your talking about. They are more like a BIW ground up build. More like 200k car.

So, you're calling Patterson and Cagnazzi liars?


By all means, walk up to them and call them liars. Please, post your adventure to youtube so we can all enjoy it.

The new COPO cars do not come off the showroom floor, and those are real COPO cars, I've seen them both. They are not body in white builds.

Oh, and GM gave NHRA the rotating assembly weights, so your rotating mass goes out the window.

Evidently you didn't see Mike testing the original COPO car right after the 2011 PRI Show. I was there when the guys at ATI gave him the converters for each engine.