Another fuel question
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Launching!
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Another fuel question
Basically finishing up my 5.3 ls swap some background info yes its an 86 iroc but every last wire from headlight to taillight is from a 00 fbody engines in and harness is all plugged in today wanted to make sure everything was good and that it would crank(disconnected ignition coils) it did but i didnt hear the fuel pump prime vats is bypassed in my bcm the ecu is from a fbody not sure if auto or manual or whats been done to the tune but shouldnt i still hear the pump? Its brand new