637 v8 1975 GMC 7500 fuel pump?????
i have a 637 v8 engine and i need a fuel pump i have looked up the motor but not much info on it. im wondering if the pump from the 478 or the 401 engine would fit? Also does anybody have a part number?
Last edited by glenbjackson; 11-04-2017 at 01:47 PM.
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