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Message: <blockquote data-quote="99GreenStang" data-source="post: 1269313" data-attributes="member: 17934"><p>I have not dyno . I am going off of a guy that has almost the same setup as me , mine is a little more built than his and he is close to 400 and his was Dyno using the same heads and the rest of his setup is almost the same as mine just a few things different here and there. Also they claim I do not know how much truth is too it but the Harland sharp roller rockers 15-40 friction free horsepower is there advertisement . Now that being said I'm not saying what Harland sharp is saying is true just letting you all know on that my friends. Also I'm degreeing the camshaft in this time so I'll pick up a few HP from that as well. I do believe I'm at 400 minimum I'm gonna look around for some Dyno # people have run with these heads on their setup . Thanks man and those 40's I had I was using fiberglass boot protector and it was burning through them even ! I guess the gt40p have more performance value than an e7 or regular 40 but they definitely do not have accessibility for service . Thanks god bless</p></blockquote><p></p>