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tbi - carb??

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Old Nov 18, 2008 | 05:35 PM
  #1  
imRICH23's Avatar
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From: KCMO
Car: 88 vert iroc & 95 586hp trans am
Engine: 355
Transmission: 700r4
Axle/Gears: 373
tbi - carb??

swapped out old motor and installed carb... but it wont run. my 88 had the fuel pump in the tank, and the other motor i dropped in has it on the block. i was told to just get a fuel regulator. but it still wont produce and gas from the tank. i replaced feul pump on the black along with the filter.. and suggestions?
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Old Nov 18, 2008 | 06:08 PM
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five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Is the in-tank electric pump getting power? Is it producing pressure?
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Old Nov 18, 2008 | 06:19 PM
  #3  
imRICH23's Avatar
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From: KCMO
Car: 88 vert iroc & 95 586hp trans am
Engine: 355
Transmission: 700r4
Axle/Gears: 373
Re: tbi - carb??

Originally Posted by five7kid
Is the in-tank electric pump getting power? Is it producing pressure?
i was told if you can hear the fump turn on it works... if thats true, then yes.
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Old Nov 18, 2008 | 07:27 PM
  #4  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
It means it's getting power. It doesn't mean it's producing pressure.
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Old Nov 18, 2008 | 07:48 PM
  #5  
imRICH23's Avatar
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From: KCMO
Car: 88 vert iroc & 95 586hp trans am
Engine: 355
Transmission: 700r4
Axle/Gears: 373
Re: tbi - carb??

Originally Posted by five7kid
It means it's getting power. It doesn't mean it's producing pressure.
not sure exactly, but when i take the fuel filter off, its full of gas
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Old Nov 21, 2008 | 05:08 AM
  #6  
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From: Allenhurst, GA
Car: '81 Z-28
Engine: Soon to be a 383
Transmission: Muncie
Axle/Gears: 3.42
Re: tbi - carb??

If I remember right, the pump will quit after about 2 seconds, and stay off until recieving a signal from the ECM. I'm not sure if it's right, but I had the same problem with my car. I took out the old pump and made a pickup to go in place of it, then used another pump. The mechanical one on the block should suffice.
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Old Nov 24, 2008 | 08:41 AM
  #7  
imRICH23's Avatar
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From: KCMO
Car: 88 vert iroc & 95 586hp trans am
Engine: 355
Transmission: 700r4
Axle/Gears: 373
Re: tbi - carb??

Originally Posted by doc221978
If I remember right, the pump will quit after about 2 seconds, and stay off until recieving a signal from the ECM. I'm not sure if it's right, but I had the same problem with my car. I took out the old pump and made a pickup to go in place of it, then used another pump. The mechanical one on the block should suffice.
which pump? motor or in the tank? and what do you mean by a "pickup to go in place of it"?
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Old Nov 24, 2008 | 11:40 AM
  #8  
Atilla the Fun's Avatar
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From: Northern Utah
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: tbi - carb??

Have you never pulled the pump out of a camaro tank? You can't pull fuel through an un-powered electric pump, unless you drill the guts out.
You can direct wire 12 volts to the pump from an ignition hot, and then make a loop between the feed and return lines in the engine bay. The feed is larger than the return, so you can then use a plastic T in the loop, to feed the carb. This worked fine for my '88 Camaro when I replaced the TBI 305 with a 300 horse 350 with a Q-Jet. This works because the return is smaller than the feed.
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Old Nov 24, 2008 | 05:19 PM
  #9  
imRICH23's Avatar
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From: KCMO
Car: 88 vert iroc & 95 586hp trans am
Engine: 355
Transmission: 700r4
Axle/Gears: 373
Re: tbi - carb??

Originally Posted by Atilla the Fun
Have you never pulled the pump out of a camaro tank? You can't pull fuel through an un-powered electric pump, unless you drill the guts out.
You can direct wire 12 volts to the pump from an ignition hot, and then make a loop between the feed and return lines in the engine bay. The feed is larger than the return, so you can then use a plastic T in the loop, to feed the carb. This worked fine for my '88 Camaro when I replaced the TBI 305 with a 300 horse 350 with a Q-Jet. This works because the return is smaller than the feed.
any pics of this?
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Old Nov 25, 2008 | 11:16 AM
  #10  
Atilla the Fun's Avatar
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Posts: 6,319
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From: Northern Utah
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: tbi - carb??

Sorry, that car is long gone.
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