That would be the secondary fuel well plugs. I have epoxied those to but what I am talking about is the top gasket just under the airhorn. When the mounting bolts are overtightened it warps the airhorn and it doesen't seal properly even with the gasket in there.
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86 Silverado C10 back to 305 power!
67 C30 Dually Dump, with 350 transplant, Rockhauler
05 Duramax 3500
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