How much HP from SBM ProComps? Well... 670HP!

I didn't say dynos are worthless, I said it irritates me when they are used as a "sales tool" this very thread is a good example, engine builder brags in a open forum that he made the most power to date with procomp heads...but once installed in a dedicated race car, it ran 122 MPH... that my freind, sure as hell aint close to no 670 horsepower.

Yep and cars that weigh 200 less and 200 fewer HP run that same basic MPH!