Fuel pump question
I have a 63 GMC 4000 series truck with a 351c engine. I suspect that I may have fuel pump problems. (It has been in the 20-30 below range for the last week so it could also be frozen but I'm not going to do anything more with it until the weather warms up) I'm not getting any fuel at all at the carburetor. If it turns out that it needs a pump, I believe that I will be converting it to an in line universal electric pump and just plug off the lines and leave the old one in place. My question is how critical is the pressure? I have a PDF repair manual that lists the factory pump at 4-6 psi. Would it hurt anything if the electric pump had a range of 5-7 psi?
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