rear end question
06-20-2007, 10:25 PM
#1
Junior Member
Thread Starter
Join Date: Jul 2006
Location: Fort worth Tx
Posts: 90
Likes: 0
Received 0 Likes
on
0 Posts
Car: 89 irocz
Engine: 305
Transmission: 700R4
Axle/Gears: 373
rear end question
kind of a stupid queston but do they make a GM 8.5'' 10 bolt ?? if so did they ever put them in the 3rd gen maros?
06-20-2007, 10:33 PM
#2
Supreme Member
Re: rear end question
no these cars only got the 7.5", and the 9 bolt, and supposedly a few rare dana 44 axles
8.5 was under some other cars, and wagons and trucks
8.5 was under some other cars, and wagons and trucks
06-21-2007, 02:21 AM
#4
Supreme Member
iTrader: (13)
Join Date: Dec 2002
Location: Bowdon, GA.
Posts: 2,535
Likes: 0
Received 16 Likes
on
14 Posts
Car: 1988 Camaro
Engine: 355, 10.34:1, 249/252 @.050", IK200
Transmission: TH-400, 3500 stall 9.5" converter
Axle/Gears: Ford 9", detroit locker, 3.89 gears
Re: rear end question
8.5" 10 bolt was mostly used in the second gen F body cars. They started using the 8.5" in 1971 and used it in the camaro and firebird up to 1981.
The third gens got 7.5" 10 bolt, 7.625" 10 bolt, Danna 44, and Borg Warner 9 bolt rears.
The 7.5" with 26 spline axles was in 1982 to 85. Then in '86 through 1990 GM upgraded the rears a tad and enlarged the ring gear to 7.625". Same housing, cover, etc is the ring gear was enlarged. Then in mid 90 all the way to 2002 they upgraded the 10 bolt again. No changes to ring gear just went from 26 spline axles to 28 spline.
During the third gen run some cars got the "better" BW 9 bolt and has been said a very few got the danna 44
The third gens got 7.5" 10 bolt, 7.625" 10 bolt, Danna 44, and Borg Warner 9 bolt rears.
The 7.5" with 26 spline axles was in 1982 to 85. Then in '86 through 1990 GM upgraded the rears a tad and enlarged the ring gear to 7.625". Same housing, cover, etc is the ring gear was enlarged. Then in mid 90 all the way to 2002 they upgraded the 10 bolt again. No changes to ring gear just went from 26 spline axles to 28 spline.
During the third gen run some cars got the "better" BW 9 bolt and has been said a very few got the danna 44
06-26-2007, 06:57 PM
#5
Junior Member
Join Date: Jun 2006
Location: central indiana
Posts: 42
Likes: 0
Received 0 Likes
on
0 Posts
Thread
Thread Starter
Forum
Replies
Last Post
hectre13
Engine/Drivetrain/Suspension Parts for Sale
2
12-11-2023 08:14 AM
hectre13
Engine/Drivetrain/Suspension Parts for Sale
7
08-26-2015 08:17 AM
AkDrifted
Engine/Drivetrain/Suspension Parts for Sale
6
08-17-2015 07:45 PM
