Tech Article: Trans Am factory cowl induction (LG4 / L69) in 4 parts
Joined: Mar 2008
Posts: 2,942
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From: Boston, MA
Car: 1983 Pontiac Trans Am Daytona 500
Engine: Crossfire 305ci V8
Transmission: Jasper 700R4 4 speed Automatic
Axle/Gears: 3.23 limited slip/posi
Re: Tech Article: Trans Am factory cowl induction (LG4 / L69) in 4 parts
where can I buy an L69 unit
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Joined: Mar 2023
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Re: Tech Article: Trans Am factory cowl induction (LG4 / L69) in 4 parts
Hi Dave, I'm new to this site but have owned a 90 Pontiac Formula since it was new. You seem like a real knowledgeable guy, so I thought it best to reach out to you for some help?
Re: Tech Article: Trans Am factory cowl induction (LG4 / L69) in 4 parts
I would suggest starting a new thread with the subject pertaining to the topic you're inquiring about.
Joined: Dec 2001
Posts: 9,937
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From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: Tech Article: Trans Am factory cowl induction (LG4 / L69) in 4 parts
I love this thread! I am a sucker for this kind of thing. It makes me want find a 5 speed Formula just to do this mod.
Joined: Dec 2001
Posts: 9,937
Likes: 636
From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Joined: Apr 2010
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From: ct
Car: 84 Trans Am
Engine: Turbo 301
Transmission: T-5
Axle/Gears: 3.73
Joined: Dec 2001
Posts: 9,937
Likes: 636
From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: Tech Article: Trans Am factory cowl induction (LG4 / L69) in 4 parts
Joined: Dec 2001
Posts: 9,937
Likes: 636
From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: Tech Article: Trans Am factory cowl induction (LG4 / L69) in 4 parts
What's the best way to keep the air flap open at all times?
Joined: Feb 2017
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From: Meriden, CT 06451
Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Joined: Dec 2001
Posts: 9,937
Likes: 636
From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: Tech Article: Trans Am factory cowl induction (LG4 / L69) in 4 parts
Last edited by chazman; Jun 10, 2023 at 09:35 PM.
Joined: Feb 2017
Posts: 4,174
Likes: 569
From: Meriden, CT 06451
Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: Tech Article: Trans Am factory cowl induction (LG4 / L69) in 4 parts
Wire, not meaning electrically.
Whatever way you can find to mechanically get the flap to stay open.
Or wedge or jam it open.
Whatever way you can find to mechanically get the flap to stay open.
Or wedge or jam it open.
Joined: Dec 2001
Posts: 9,937
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From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Junior Member
Joined: Aug 2024
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From: France
Car: 1982 Trans Am 4bbl WS6 package
Engine: LG4
Transmission: Thm-200c
Axle/Gears: 3.23 posi track
Re: Tech Article: Trans Am factory cowl induction (LG4 / L69) in 4 parts
Hello everyone, I recently purchased a complete hood air induction kit for my 82 Trans Am . Unfortunately the parts that make this system work are very difficult to find. Do you have a link to be able to buy this famous vacuum switch essential to operate the hood system? Thanks for your help. Patrick
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From: Colorado USA
Car: '83 Firebird (T/A Clone)
Engine: 350 with L-69 components
Transmission: 700R-4, 2000 RPM stall converter
Axle/Gears: 10-bolt/3.73 ..
Re: Tech Article: Trans Am factory cowl induction (LG4 / L69) in 4 parts
I wouldn't even mess with all that. Get a Wide-Open Throttle switch and a relay, and wire it up like that...
Junior Member
Joined: Aug 2024
Posts: 5
Likes: 1
From: France
Car: 1982 Trans Am 4bbl WS6 package
Engine: LG4
Transmission: Thm-200c
Axle/Gears: 3.23 posi track
Re: Tech Article: Trans Am factory cowl induction (LG4 / L69) in 4 parts
Do you have links to order the parts you are talking about?
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