26 spline? 28 spline?
Supreme Member
iTrader: (1)
Joined: Aug 1999
Posts: 2,842
Likes: 6
From: Rowlett, TX
Car: 1988 GTA
Engine: 5.0 TPI
Transmission: T5
Axle/Gears: 9 Bolt, 3.45
I Believe 89 is the changeover year, but I am not postitive. Im pretty sure they changed to 28 spline axles when they changed to the 7.625" ring gear, which was in 89.
Senior Member
Joined: Jul 1999
Posts: 931
Likes: 0
From: Mpls, MN USA
Car: 88 Camaro
Engine: 427 BBC
Transmission: T400
Your 88 will have 26 spline.
Miles
www.9bolt.com
Joined: Jul 1999
Posts: 12,093
Likes: 126
From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Miles, Miles, Miles,
What do I do.. Do I buy a 3.73 gear set off you and hope my POSI lasts a few more seasons, or Do I go with a 10 bolt and a spool..
-- Joe
What do I do.. Do I buy a 3.73 gear set off you and hope my POSI lasts a few more seasons, or Do I go with a 10 bolt and a spool..
-- Joe
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