NO more ECM
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Joined: Apr 2003
Posts: 717
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From: pittsburgh, PA
Car: 84 Firebird Trans Am
Engine: 305 4bbl HO
Transmission: 700-R4, 3.73 rear
NO more ECM
stock 84 TA L69....
i need a list of parts to take the engine off the computer and what i need to do....i would like to get this done now so i can just swap the engine later on
i need a list of parts to take the engine off the computer and what i need to do....i would like to get this done now so i can just swap the engine later on
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You'll need a 4MV or other non-CCC carburetor, a mechanical/vacuum advance distributor, and some means to operate the TCC in the transmission and the electric cooling fan (I believe the L69 had an electric fan, right?).
Joined: Mar 2000
Posts: 43,187
Likes: 46
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
The radiator fan is controlled by a temp switch & relay, not the computer.
Any particular reason you want to go through this downgrade?
Any particular reason you want to go through this downgrade?
Thread Starter
Senior Member
Joined: Apr 2003
Posts: 717
Likes: 0
From: pittsburgh, PA
Car: 84 Firebird Trans Am
Engine: 305 4bbl HO
Transmission: 700-R4, 3.73 rear
Originally posted by five7kid
The radiator fan is controlled by a temp switch & relay, not the computer.
Any particular reason you want to go through this downgrade?
The radiator fan is controlled by a temp switch & relay, not the computer.
Any particular reason you want to go through this downgrade?
Joined: Mar 2000
Posts: 43,187
Likes: 46
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
You can run the CC system on a 383. Check out these magazine articles from the TGO home page
https://www.thirdgen.org/newdesign/a.../rebirth.shtml
https://www.thirdgen.org/newdesign/a...rebirth2.shtml
https://www.thirdgen.org/newdesign/a.../rebirth.shtml
https://www.thirdgen.org/newdesign/a...rebirth2.shtml
Joined: Jul 1999
Posts: 12,101
Likes: 127
From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Even if you went with a non CC carb, i'd keep the electronic ignition and control it either with an accel ignition controller, or an EFI ecm and a map sensor.
-- Joe
-- Joe
Thread Starter
Senior Member
Joined: Apr 2003
Posts: 717
Likes: 0
From: pittsburgh, PA
Car: 84 Firebird Trans Am
Engine: 305 4bbl HO
Transmission: 700-R4, 3.73 rear
so is there anything i can do now to make it more ready later on...and will anything i could do now make a difference
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Joined: Mar 2000
Posts: 43,187
Likes: 46
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
Have you done anything to upgrade the ignition like module & coil? Subframe connectors, poly suspension bushings, etc.?
Thread Starter
Senior Member
Joined: Apr 2003
Posts: 717
Likes: 0
From: pittsburgh, PA
Car: 84 Firebird Trans Am
Engine: 305 4bbl HO
Transmission: 700-R4, 3.73 rear
Originally posted by five7kid
Have you done anything to upgrade the ignition like module & coil? Subframe connectors, poly suspension bushings, etc.?
Have you done anything to upgrade the ignition like module & coil? Subframe connectors, poly suspension bushings, etc.?
Joined: Mar 2000
Posts: 43,187
Likes: 46
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
The stock module & coil tend to start dying off at around 4500 RPMs.
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