How do I tell a third from a fourth gen rear?
Thread Starter
Senior Member
iTrader: (6)
Joined: May 2005
Posts: 751
Likes: 0
From: Beech Bluff,TN
Car: 1991 Trans Am Convertible
Engine: 305 TPI
Transmission: T5
Axle/Gears: 3:08
How do I tell a third from a fourth gen rear?
I am looking at a rear this weekend for a friend its out of the car and I ned to know if it is a third or fourth gen rear...since they pretty much bolt in I dont know how to tell them apart
If you do it by length I need some measurements to go by...Thanks
If you do it by length I need some measurements to go by...Thanks
Senior Member
iTrader: (1)
Joined: Mar 2005
Posts: 646
Likes: 0
From: San Antonio
Car: 1981 Camaro; 1986 Z28
Engine: LT1; LT1
Transmission: 6 speed; 6 speed
Axle/Gears: 3.73; 3.42
I do believe the length is 65.5". There would also be the ABS sensor ring inside the the diff and then on the axles for the ASR option, if it was equipped.
Supreme Member
Joined: Jun 2001
Posts: 9,550
Likes: 4
From: Charleston, SC
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
to tell at a glance i look at the top of the pumpkin... if it has a boss for the ABS sensor cast into it, its a 4thgen rear... if it doesnt, its a thirdgen rear..
the boss may be drilled for the sensor, or it may not, depending on if the car has 3 channel or 4 channel ABS.... but the boss is still cast in there.
the boss may be drilled for the sensor, or it may not, depending on if the car has 3 channel or 4 channel ABS.... but the boss is still cast in there.
Thread
Thread Starter
Forum
Replies
Last Post
1992rs/ss
NW Indiana and South Chicago Suburb
14
Jan 31, 2025 05:10 PM
1992rs/ss
Engine/Drivetrain/Suspension Parts for Sale
16
Jan 28, 2016 09:58 PM
Linson
Auto Detailing and Appearance
40
Aug 21, 2015 02:12 PM