I am attempting the same thing. I cut the pulley today and hopefully I will get done welding tomorrow. When finished it should be about 7.5 inches. Where do you guys get the cobra WP pulley. The ford dealer wants about $50 for it, is it avaliable anywhere for cheaper? I am currently running the F-150 pulley, it is about 6.5inches with a power pipe. Anybody know about how many pounds more I will see with a 7.5in? I get about 8-9#s at about 6700rpms. I want 10-12#s hopefully!!!!
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