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What exactly does the comp have control of?

Old Dec 1, 2004 | 09:00 PM
  #1  
90Formula305's Avatar
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Joined: Nov 2004
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From: Modesto, Killmefornia
Car: 1990 Pontiac Firebird Formula
Engine: 305
Transmission: 700 R4
Axle/Gears: peg leg
What exactly does the comp have control of?

Im swapping my motor out in winter and i was wondering what will work and what wont if i just rip the whole computer system, cause its going to be a carb motor, or what can i plug back in to make it still work right? Thanks alot, much appreciated.

Last edited by 90Formula305; Dec 1, 2004 at 10:13 PM.
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Old Dec 2, 2004 | 04:41 PM
  #2  
AJT86's Avatar
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Joined: Feb 2004
Posts: 231
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From: Sicklerville,NJ
Car: 87 Buick Grand National
Engine: 3.8 SFI Intercooled Turbo
Transmission: 200R4 3000 Stall
if your going carbed- you dont need any of it, strip it all out get an HEI system from the junkyard, im using a mechanical fuel pump- if your not worried about emissions ditch it all from the ECM to the O2 sensor. you will need to take out the VATS system too i beleive- i just ripped all the wireing out and made my own harness for only the stuff i need. if its an everyday driver i wouldnt do a carb though- its do the LT1 swap. Non computerized cars tend to be a lil touchy and ****. youll also need to work on the guages and what not- make a custom autometer pod like im doing it makes it all easy. if you have any questions just PM me ill be happy to help ya

Last edited by AJT86; Dec 2, 2004 at 04:44 PM.
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Old Dec 3, 2004 | 01:40 AM
  #3  
83_1/2 L69's Avatar
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Joined: May 2003
Posts: 264
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From: SillyCon Valley, CA
Car: 83 Z-28 (Original owner)
Engine: 305 CC-carb
Transmission: Richmond 6-speed, Rear:3.73
The computer controls the ignition and transmission lock-up.
Without a working throttle position sensor (TPS), nothing will work. The ECM would be stuck in Limp Mode.
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Old Dec 3, 2004 | 10:56 AM
  #4  
90Formula305's Avatar
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Joined: Nov 2004
Posts: 279
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From: Modesto, Killmefornia
Car: 1990 Pontiac Firebird Formula
Engine: 305
Transmission: 700 R4
Axle/Gears: peg leg
ok, but if im switching to a carb'd motor im going to replace the whole ignition system, so do i need still have cause im also getting a different torque converter and transmission.
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