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External electric fuel pump for TBI

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Old Oct 21, 2013 | 06:14 AM
  #1  
wahoo's Avatar
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Joined: May 2005
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From: France
Car: Camaro RS 1992
Engine: 305 TBI
Transmission: TH700R4
External electric fuel pump for TBI

Hi,
My stock electric in tank fuel pump is dead.
The previous owner put an external fuel pump. But she's dead too...
my house is sold so I have to move my camaro.
I plan to replace for the moment the external electric fuel pump with a new one.
I look to Summit but there are several external fuel pump.
Can you tell me what I have to pay attention (psi, gph, so on...) to make the right choice.
If you have some link...
I plan to replace in the future the electric in tank fuel pump, but now it's not the moment.
Thanx
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Old Oct 21, 2013 | 04:23 PM
  #2  
Schurkey's Avatar
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Re: External electric fuel pump for TBI

If the external electric pump has to try to pull fuel through a dead internal electric pump, you've probably figured out why the external pump also died.

Assure that the internal pump is REMOVED, and an extension tube with a filter sock at the bottom is fitted to the fuel pump hanger assembly.
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Old Oct 21, 2013 | 04:38 PM
  #3  
wahoo's Avatar
Thread Starter
Junior Member
 
Joined: May 2005
Posts: 91
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From: France
Car: Camaro RS 1992
Engine: 305 TBI
Transmission: TH700R4
Re: External electric fuel pump for TBI

I want to install an external pump only for a short time, to move the car to the new home.
Then after, I will take the time to remove the external pump, and to install an in tank fuel pump.
Now, I haven't the time.
Please help me to find the right external fuel pump...
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Old Oct 21, 2013 | 07:24 PM
  #4  
Schurkey's Avatar
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Re: External electric fuel pump for TBI

Originally Posted by wahoo
I want to install an external pump only for a short time, to move the car to the new home.
Then after, I will take the time to remove the external pump, and to install an in tank fuel pump.
Now, I haven't the time.
Please help me to find the right external fuel pump...
There is no "right" external pump. Any pump you install will almost certainly have a very limited service life because it's trying to pull fuel through the original in-tank pump.

Maybe you get six months out of the new pump, maybe you get fifteen minutes. Maybe it won't pump at all because the restriction is just too great.

All that's really important is that the output pressure should not be lower than ~10 psi, preferably 14 or more; and that's going to be hard to judge if the inlet is restricted by the original pump.

I suggest you make arrangements to TOW the vehicle to the new home, or drop the tank RIGHT NOW and replace the in-tank pump.
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Old Oct 24, 2013 | 10:10 PM
  #5  
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From: Minnesota
Car: 1969 firebird, 1986 Trans Am,
Engine: 461,305TB
Transmission: T-10,700r4
Axle/Gears: 3.55,2.73
Re: External electric fuel pump for TBI

A blue Holley may work. They push better than pull so try to keep it low so ir gravity feeds. They are 9 psi my tbi truck ran at 9.
Good luck w//your move.
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