hi performance mod problem
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Joined: Jan 2002
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hi performance mod problem
I put the offy intake, dynomax headers, 390 holley carb,and dual turbo mufflers on a 1986 F150. The whole thing has been a nightmare. I keep blowing up the muffler on the first 3 cylinders. Also the intake/exhaust gasket keeps blowing out and will not seal up right. All of the polution control stuff is gone. The truck runs goon for about 5 days and then everything blows out. what can I do to fix this? I noticed that the intake flange is thicker than the header flange but i spaced this out with washers on the header flange. What is the better fix?
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