roush cars in stock and super stock

[SSDiv6]

Originally Posted by Alan Roehrich

Evan, I agree, except on two points.

The ZR-1 Corvette, unless something else has changed, is a pure Chevrolet vehicle, manufactured as sold at GM, and not farmed out to another company to modify it, so the Roush cars are not exactly the same as the ZR-1 Corvette. That does not really matter.

On the supercharger, if you'll read or re-read my earlier post, note where I wrote that Roush is using the largest version of the Eaton supercharger on a 4.6L V8, and Eaton says the largest version is big enough to feed large displacement V engines. I can't tell about Eaton for sure, but a 4.6L V8 is not what I call a large displacement V engine. What that means, given that Eaton says it has better than 76% thermal efficiency, is that it probably will perform a lot different and a lot better than the blowers we're used to seeing, if Eaton is telling the truth. That DOES matter.

Again, I'm am NOT opposed to letting them race. But NHRA needs to do a LOT better job factoring them than they have done factoring a lot of cars, historically. And if they miss, they don't need to drag their *** about fixing it. We've got enough severely underfactored cars in the class now.

Alan, Chevrolet may assemble the car, however, the R&D for the engine and drivetrain, is outsourced to different companies including Roush, Katech and a few others. Also, this is not the first time a car company has a car built outside the assembly line. Let's not forget the Dart/Hemi 'Cudas, 1968 & 1969 Dart/Cuda 440-4, and other cars such as the Yenko and Hurst cars.

Although they may be using a high efficiency S/C, like Evan said, the heat build up is always the limiting factor. I had my learning curve with the Buick Series I and Series II S/C engines and believe me, whenever you increase the boost, a lot of other issues arise.