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Old January 26th, 2019, 02:33 AM
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LEWISMATKIN LEWISMATKIN is offline
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Join Date: Jan 2013
Location: RIDGE MANOR, FLORIDA
Truck: 1965 1002 GMC V6-305E
Age: 64
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Default Re: 1966 And Later Fuel Pumps

Bob, the only difference between the '65 pump (AC #4578) and the '66 pump (AC #40050) is the inlet bib. GM increased the inlet size of all vehicle lines to 3/8" from the earlier combination of either 5/16" or 3/8" depending upon division. Whether or not the arm is bent or straight is dependent on the manufacture of the specific pump (AC, Airtex, or Carter), either will work on the V6 engine.
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