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91 fuel pump trap door

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Old Feb 29, 2012 | 09:45 PM
  #1  
mintc's Avatar
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91 fuel pump trap door

i am wanting to replace the fuel pump in my 91z and dont want to drop the tank i seen somewhere about how to cut the top out of the hatchpan and it had the dimensions and stuff but i cant seem to locate it anymore. any1 got any info on this surgery
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Old Feb 29, 2012 | 09:57 PM
  #2  
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Re: 91 fuel pump trap door

http://ls1tech.com/forums/fueling-in...-98-fbody.html

http://ls1tech.com/forums/lt1-lt4-mo...ut-sparks.html

http://ls1tech.com/forums/lt1-lt4-mo...ions-help.html

http://ls1tech.com/forums/lt1-lt4-mo...-mod-pics.html


Here are some posts on it...I did this on my 87 TA...no regrets
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Old Feb 29, 2012 | 10:03 PM
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Re: 91 fuel pump trap door

would you cut in the same place tho? that vid was from a fourth gen camaro
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Old Feb 29, 2012 | 10:19 PM
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Re: 91 fuel pump trap door

mine is a third gen...I would remove the carpet and look at the current position where the sending unit is located...its pretty close to what is shown....or do some searches for 3rd gen trap doors on this forum and thirdgen.org, ls1tech.com, firebirdnation.com
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Old Feb 29, 2012 | 10:25 PM
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From: Central Texas
Car: GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: Aussie 9-bolt/3.27 posi
Re: 91 fuel pump trap door

All the pic info you'll need to located the pump access door.

http://s119.photobucket.com/albums/o...%20GTA/Engine/

Last edited by BlackenedBird; Feb 29, 2012 at 10:48 PM.
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Old Mar 2, 2012 | 05:44 AM
  #6  
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Re: 91 fuel pump trap door

what about the metal fuel lines? how are they gona come out that little hole?
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Old Mar 2, 2012 | 09:26 AM
  #7  
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From: Central Texas
Car: GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: Aussie 9-bolt/3.27 posi
Re: 91 fuel pump trap door

Originally Posted by mintc
what about the metal fuel lines? how are they gona come out that little hole?
They won't, hence the need to cut the lines & add connections to the hard lines. Typically the entire tank is dropped one last time to do the hard lines connections so that dropping the tank isn't needed again. There has been some people successful in cutting the lines through the "small" hole & doing the disconnects without dropping the tank, but I don't know how they are accomplishing that.
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Old Apr 19, 2012 | 04:35 PM
  #8  
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Car: 1991 Z28
Engine: 5.7 TPI
Transmission: 700R4
Re: 91 fuel pump trap door

My plan is to cut the fuel lines at the sending unit area AND under the car, then replace those lines with braided steel fuel lines and AN fittings. That should enable me to, if I need to replace the pump, just open the panel, disconnect the lines and pull the sending unit out. Easy, peezy- lemon squeezy!
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