When you open up your carburetor, hopefully you'll not be surprised as much as I was. I went upstream checking fuel pump, fuel filter, fuel tank on up to the gas cap. Rust everywhere. The truck had been running but running poorly. Replaced everything new from gas cap up to the carburetor. Then rebuilt the carburetor. Runs great now. I only use non-ethanol gas.
"Adding CFM to a truck will only help at engine speeds you don't want to use." "I found there was nothing to gain beyond 400 CFM."
