Glowing Manifolds

ALL OTHER MAKES ALL OTHER MODELS
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GMC92
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I have a GMC Top Kick w/ a 366 big block and the manifolds glow I've ruled out the muffler and cat..Any suggestions..
Jul 26, 2007 at 9:43 PM
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KIN CHAN
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heh heh heh heh
just kidding..
1.) valve/cam timing
2.) too lean
Jul 26, 2007 at 9:59 PM