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fuel system

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Old Mar 22, 2007 | 07:11 PM
  #1  
thirdgenlover's Avatar
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Joined: Jul 2005
Posts: 345
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From: Indiana
Car: 87 trans am
Engine: 350 TPI bored .040 over
Transmission: modified 700r4
Axle/Gears: stock spline, 3.73 Eaton posi
fuel system

ok i just got my fuel pump in and the adjustable reg. in as well. now when you have one of those haynes manuals and it says the spec that the fuel psi should be in, that is with the motor not running right. bc mine is in spec right around 45, then when it is running it is like at 40? that and with my reg. it does seem to want to increase the psi a whole like, just to see if it is working. i am running this reg. http://store.summitracing.com/partde...0&autoview=sku
just it just take a lot of turns of the screw for it to really start to change?
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Old Mar 23, 2007 | 08:37 PM
  #2  
89Nighthawk's Avatar
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Joined: Jun 2005
Posts: 266
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From: Texas
Car: 89 GTA Nighthawk
Engine: 389 CID Vortec TPI
Transmission: TCI 700R4 w/Vigilante
Re: fuel system

You want to set the fuel pressure with the car at idle. Then tape the pressure gage to your windshield and go wail on it. This will make sure that you are maintaining that fuel pressure or close to it at WOT at redline. The threads on the AFPR are very fine so it does take some turns to get a change.
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Old Mar 24, 2007 | 12:10 AM
  #3  
thirdgenlover's Avatar
Thread Starter
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Joined: Jul 2005
Posts: 345
Likes: 0
From: Indiana
Car: 87 trans am
Engine: 350 TPI bored .040 over
Transmission: modified 700r4
Axle/Gears: stock spline, 3.73 Eaton posi
Re: fuel system

ok thanks, i did that today just for the heck of it to see what it was today after the computer had some time to relearn bc it has been sitting so long. it was right around 45, just like it was before i replaced if so i could have a reference.
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