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Alan Roehrich · 09-10-2008, 08:32 PM

On cars with crank driven superchargers, NHRA does not allow you to change the pulleys. Of course, if the supercharger is a centrifugal supercharger, I'd like to see how NHRA will check them for ratio.

On the Shelby cars, Shelby is considered to be a manufacturer, at least last I looked. The Shelby cars, at least the originals from the sixties, are listed as Shelbys, not Fords.

09-10-2008, 08:32 PM	#5
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,136 Likes: 1,614 Liked 1,923 Times in 432 Posts	Re: roush cars in stock and super stock On cars with crank driven superchargers, NHRA does not allow you to change the pulleys. Of course, if the supercharger is a centrifugal supercharger, I'd like to see how NHRA will check them for ratio. On the Shelby cars, Shelby is considered to be a manufacturer, at least last I looked. The Shelby cars, at least the originals from the sixties, are listed as Shelbys, not Fords. __________________ Alan Roehrich 212A G/S