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What would these heads do to the hp in F.A.S.T. sb engines?



Probably get you to 11.70's and no more. Because thats the ET when they pull your valve cover and check for a casting number.



They won't even have to pull the covers as they look different from the outside, especially the INDY/RHS logos.

I am not causing global warming, I am just trying to hold off a impending Ice Age!