Could you get a 3.45 gear in a 87 or 88 Trans Am with a 5 speed 305TPI?
Thread Starter
Supreme Member
Joined: Jul 1999
Posts: 1,466
Likes: 71
From: Alberta, Canada
Car: 1989 Camaro-1LE
Engine: TPI(s)
Transmission: 5 speed (MM5, MK6)
Axle/Gears: 3.45, 3.73
Could you get a 3.45 gear in a 87 or 88 Trans Am with a 5 speed 305TPI?
In all the documentation I read, (gm brochures, tech sheets, etc), it appears that if you ordered "just" a Trans Am, you only got a 3.08 rear gear with a 305 5 speed.
If you ordered a GTA or Forumla, then you got the 3.45 rear gear.
I found some conflicting info that if you ordered the MK6 5 speed, then you got the better rear gears ... although the MK6 was not really a known option, at least not on the order sheets.
Mark.
If you ordered a GTA or Forumla, then you got the 3.45 rear gear.
I found some conflicting info that if you ordered the MK6 5 speed, then you got the better rear gears ... although the MK6 was not really a known option, at least not on the order sheets.
Mark.
Joined: Jan 2004
Posts: 2,960
Likes: 377
From: Las Vegas
Car: 1987 Formula (original owner)
Engine: 305 TPI
Transmission: T5
Axle/Gears: 9-bolt/3.45
The 3.45 in my Formula was part of the W66 Formula Option package, and I'd guess it's also part of a GTA Option package. So that should help confirm your findings on those models.
But I think TAs could be purchased with or without all the performance upgrades. So if someone wanted the 3.45, it probably got ordered individually as G92 Performance Ratio.
But I think TAs could be purchased with or without all the performance upgrades. So if someone wanted the 3.45, it probably got ordered individually as G92 Performance Ratio.
Thread
Thread Starter
Forum
Replies
Last Post
1992 Trans Am
Engine/Drivetrain/Suspension Parts for Sale
1
Aug 8, 2015 08:16 PM
