1975 Chevrolet Cheyenne Repair Question
Old truck, swapped motor to a 455 big block, having vapor locking problems, any suggestions?
If its actually vapor locking-seal the fuel pump area and see if it helps
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A true vapor lock is the fuel boiling due to being too close to a heat source. I doubt that is really your problem. It's much more common for a mechanical fuel pump to suck in air due to a porous fuel line somewhere between the pump and the tank.
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i know exactly where my problem is, just don't have the time or money to move the fuel line, it has an electric fuel pump that i have had pressure tested, so i know it's a true vapor lock, would wrapping my exhaust manifold help? or make my problem worse?
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