V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

Mechanical or electrical fuel pumps?

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Old 03-15-2005, 05:22 PM
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Car: 91 Firebird
Engine: 3.1 V6
Transmission: TH-700-R4
Mechanical or electrical fuel pumps?

What fuel pumps came on the MPFI 3rd gens?

What are the advantages and disadvantages of mechanical vs electrical?


How long are fuel pumps suppose to last?
Old 03-15-2005, 07:06 PM
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Car: 13 Ram 1500/ 78 Formy
Engine: 5.7 / 7.4
Transmission: 6sp / TH350
Axle/Gears: 3.55 posi / 3.23
1. in tank electrical.

2. what's intened vehicle?

3. a long time, both kinds.
Old 03-15-2005, 07:08 PM
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Car: IROC Z
Engine: 5.7
Transmission: 700R4
the fuel pump in my camaro made it to 100,000kilometers.

i thought that was pretty sad.

but then again i dont know if its ever been run dry on gas. and it was the original pump
Old 03-15-2005, 07:22 PM
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Car: 1987 Camaro SC
Engine: 2.8L MPFI (rebuilt)
Transmission: 700R4 swapped to T5
Axle/Gears: 3.42 open
My car still has the original fuel pump in it. 180,000 miles. I know it is the original, because I know both of the previous owners of the car.
Old 03-17-2005, 10:10 AM
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You are faced with ONLY TWO CHOICES for the fuel pump issue.
Either it works, seamlessly,
or you are repairing it.
For my 1985 S-10 Blazer 3.4 conversion I had to upgrade switch to an electric fuel pump.
3.4 blocks have no provision for a mechanical pump.
That was one of my last "hold-ups" for returning car to road.
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