SURVEY: 1988-89 TA with LB9 + M39
Thread Starter
Junior Member
Joined: May 2018
Posts: 98
Likes: 30
SURVEY: 1988-89 TA with LB9 + M39
How many 1988 or 1989 Trans Ams with the RPO LB9 engine mated to the RPO M39 manual transmission out there?
Post your SPID label if you have it!
Here's "NewTo3rdGens" LB9 + M39 SPID from a couple days ago....
https://www.thirdgen.org/forums/hist...m-looking.html
Post your SPID label if you have it!
Here's "NewTo3rdGens" LB9 + M39 SPID from a couple days ago....
https://www.thirdgen.org/forums/hist...m-looking.html
Joined: Dec 2001
Posts: 9,941
Likes: 641
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: SURVEY: 1988-89 TA with LB9 + M39
3.08 rear gear will have an M39. 3.45 rear gear will have a MK6.
Thread Starter
Junior Member
Joined: May 2018
Posts: 98
Likes: 30
Re: SURVEY: 1988-89 TA with LB9 + M39
That's true.
For 1988, the M39, whether paired with the L03 on the Firebird, Formula, or Trans Am, or paired with the LB9 on the Trans Am, was always GU4.
For 1988, the MK6, paired with the LB9 on the Formula, Trans Am, or GTA was always GM3.
The 1988 MD8 on Pontiac's F-Body used neither the GU4 nor the GM3.
Still looking for 1988 SPIDs - Formula or Trans Am or GTA
For 1988, the M39, whether paired with the L03 on the Firebird, Formula, or Trans Am, or paired with the LB9 on the Trans Am, was always GU4.
For 1988, the MK6, paired with the LB9 on the Formula, Trans Am, or GTA was always GM3.
The 1988 MD8 on Pontiac's F-Body used neither the GU4 nor the GM3.
Still looking for 1988 SPIDs - Formula or Trans Am or GTA
Thread
Thread Starter
Forum
Replies
Last Post
MikeC.86Roc
Transmissions and Drivetrain
3
Jul 30, 2007 04:36 PM