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Message: <blockquote data-quote="P.S.I.cho" data-source="post: 450119" data-attributes="member: 10511"><p>ya that intake is a PITA, i have one on my car and i cant keep that lower manifold sealed, and as ryclef said u can machine to to mate it to the block how ever if yours ports already match up and you machine the intake mani, your making the ports shorter, in effect your losing the gains made by the longer ports of that intake...but im half tempted to machine it anyways at 10 PSI crank case pressures take a toll on the RTV, the best RTV i have found so far is, Permatex: Right stuff and ford power stroke spec. diesel grey silicone. that powerstroke stuff is ridiculous its like clay when it hardens.</p></blockquote><p></p>