difference in fuel pumps - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*vegaschevy* · 09-25-2009, 01:08 AM

Auto zone lists a 3 line and a 2 line. What is the difference between the two? and why? I am guessing I need a 3 line on my 72 but who knows.

sleepertruck72 · 09-25-2009, 02:18 AM

I had a 3 line originally on my 72. I ended up getting a 2 line pump. One inlet, one outlet. The third line I believe was a return line to the tank. I just capped that 3rd line, and it works fine.

09-25-2009, 01:08 AM	#1
vegaschevy Account Suspended Join Date: May 2009 Location: las vegas nv Posts: 1,493	difference in fuel pumps Auto zone lists a 3 line and a 2 line. What is the difference between the two? and why? I am guessing I need a 3 line on my 72 but who knows.

09-25-2009, 02:18 AM	#2
sleepertruck72 Registered User Join Date: Nov 2007 Location: Turlock California 95380 Posts: 2,075	Re: difference in fuel pumps I had a 3 line originally on my 72. I ended up getting a 2 line pump. One inlet, one outlet. The third line I believe was a return line to the tank. I just capped that 3rd line, and it works fine. __________________ 72 C20 Longbed 05 1500 Z71

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