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Fuel pump

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Old May 19, 2011 | 11:49 AM
  #1  
lonesomeloser's Avatar
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From: Middletown, MD
Car: 1983 Z28
Engine: 305
Transmission: 700R4
Fuel pump

I just bought a GM 6415325 mechanical fuel pump for the 355. The stock fuel pump from the 305 has 2 extra ports on the bottom, whereas the new one only has one port. What is the deal??
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Old May 19, 2011 | 11:55 AM
  #2  
Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Fuel pump

The smaller port on the stock pump is for the return line.
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Old May 19, 2011 | 01:34 PM
  #3  
lonesomeloser's Avatar
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Joined: Dec 2008
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From: Middletown, MD
Car: 1983 Z28
Engine: 305
Transmission: 700R4
Re: Fuel pump

I should exchange it for one with a return line? I mean the hard line is already there, why not take advantage.

Last edited by lonesomeloser; May 19, 2011 at 01:38 PM.
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Old May 19, 2011 | 01:35 PM
  #4  
Apeiron's Avatar
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Joined: Jan 2000
Posts: 20,981
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Fuel pump

If you can, sure.
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