Suspension and Chassis Questions about your suspension? Need chassis advice?

Can't get rear to sit even.

Thread Tools
 
Search this Thread
 
Old Oct 2, 2022 | 06:46 PM
  #1  
Evilokc's Avatar
Thread Starter
Senior Member
5 Year Member
Liked
 
Joined: Apr 2016
Posts: 733
Likes: 47
Car: 1991 base firebird
Engine: tbi 305
Transmission: 700r4
Can't get rear to sit even.

Installed a new rear end and now I cAnt get the rear even. it's an inch off. I'm assuming it's the spring clocking but I've moved the low side around to get it to match the higher side and I'm not having any luck. Words of wisdom? The driver side is so low I. CAnt drive it.


Reply
Old Oct 2, 2022 | 07:08 PM
  #2  
george88gta's Avatar
Member
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2003
Posts: 437
Likes: 21
From: Long Island N.Y
Car: 1988 Pontiac GTA
Engine: 5.7 l98
Transmission: 700r4
Axle/Gears: BW 9bolt with torsen carrier
Re: Can't get rear to sit even.

I believe bottom of spring coil ends towards outside of car
Reply
Old Oct 2, 2022 | 07:15 PM
  #3  
george88gta's Avatar
Member
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2003
Posts: 437
Likes: 21
From: Long Island N.Y
Car: 1988 Pontiac GTA
Engine: 5.7 l98
Transmission: 700r4
Axle/Gears: BW 9bolt with torsen carrier
Re: Can't get rear to sit even.

Originally Posted by Evilokc
Installed a new rear end and now I cAnt get the rear even. it's an inch off. I'm assuming it's the spring clocking but I've moved the low side around to get it to match the higher side and I'm not having any luck. Words of wisdom? The driver side is so low I. CAnt drive it.

are you sure you didn't forget the ring that goes above spring on one side? I usually put a piece of scotch tape on the top to hold it in position when installing. I think the clocking needs to be correct and can't be spun around
Reply
Old Oct 2, 2022 | 08:39 PM
  #4  
Evilokc's Avatar
Thread Starter
Senior Member
5 Year Member
Liked
 
Joined: Apr 2016
Posts: 733
Likes: 47
Car: 1991 base firebird
Engine: tbi 305
Transmission: 700r4
Re: Can't get rear to sit even.

Originally Posted by george88gta
are you sure you didn't forget the ring that goes above spring on one side? I usually put a piece of scotch tape on the top to hold it in position when installing. I think the clocking needs to be correct and can't be spun around
i have the taped on the top of the spring
Reply
Old Oct 2, 2022 | 09:31 PM
  #5  
sofakingdom's Avatar
Supreme Member
20 Year Member
Community Builder
iTrader: (1)
 
Joined: Sep 2005
Posts: 27,881
Likes: 2,434
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Can't get rear to sit even.

Measure THE CAR, not the trim (fender).
Reply
Old Oct 2, 2022 | 09:46 PM
  #6  
Evilokc's Avatar
Thread Starter
Senior Member
5 Year Member
Liked
 
Joined: Apr 2016
Posts: 733
Likes: 47
Car: 1991 base firebird
Engine: tbi 305
Transmission: 700r4
Re: Can't get rear to sit even.

bottom of car to the ground? measuring 3 areas on each side i found the driver side is 1/2 inch lower at all measured sites

Last edited by Evilokc; Oct 2, 2022 at 09:53 PM.
Reply
Old Oct 2, 2022 | 10:37 PM
  #7  
george88gta's Avatar
Member
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2003
Posts: 437
Likes: 21
From: Long Island N.Y
Car: 1988 Pontiac GTA
Engine: 5.7 l98
Transmission: 700r4
Axle/Gears: BW 9bolt with torsen carrier
Re: Can't get rear to sit even.

Originally Posted by Evilokc
bottom of car to the ground? measuring 3 areas on each side i found the driver side is 1/2 inch lower at all measured sites
Do you have adjustable panhard bar? Control arms both in the same mounts on each side?
Reply
Old Oct 3, 2022 | 12:15 AM
  #8  
RestoRoc89's Avatar
Member
20 Year Member
 
Joined: Feb 2005
Posts: 120
Likes: 3
From: Ontario, Canada
Car: 1987 Iroc-Z/1993 Z28/2011 Corvette
Engine: 350 CI TPI/355 CI LT1
Transmission: 700R4/D&D Performance T56
Axle/Gears: 3.27 9-bolt/3.73 10-Bolt
Re: Can't get rear to sit even.

Really basic question here … did you torque the suspension bushings (LCAs and panhard bar) with the suspension loaded / compressed? If not, the rubber bushings could be adding an uneven amount of preload. Ignore all of this if you have urethane bushings.
Reply
Old Oct 3, 2022 | 03:25 PM
  #9  
vinny R's Avatar
Supreme Member
10 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2015
Posts: 1,765
Likes: 286
From: Florida
Car: 1991 Z28
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3:42 Auburn
Re: Can't get rear to sit even.

Was it like this before you changed the rear end? Did you measure prior to changing the rear end?

I ask this for a reason, my car and my buddies 92 both sit lower on the drivers side. Mine I don't think has ever been removed and I have original springs. His rear end has never been out of the car and after he changed to lowering springs it still sits lower on the drivers side.
Reply
Old Oct 3, 2022 | 08:17 PM
  #10  
Evilokc's Avatar
Thread Starter
Senior Member
5 Year Member
Liked
 
Joined: Apr 2016
Posts: 733
Likes: 47
Car: 1991 base firebird
Engine: tbi 305
Transmission: 700r4
Re: Can't get rear to sit even.

i have an adjustable panhard. bar. the rear control arms are tubular but not adjustable.
Reply
Old Oct 3, 2022 | 08:18 PM
  #11  
Evilokc's Avatar
Thread Starter
Senior Member
5 Year Member
Liked
 
Joined: Apr 2016
Posts: 733
Likes: 47
Car: 1991 base firebird
Engine: tbi 305
Transmission: 700r4
Re: Can't get rear to sit even.

im sure i torqued the Panhard and sway bar with weight on the car. not positive about the rear control arms. i will check the lca tomorrow.
Reply
Old Oct 3, 2022 | 08:20 PM
  #12  
Evilokc's Avatar
Thread Starter
Senior Member
5 Year Member
Liked
 
Joined: Apr 2016
Posts: 733
Likes: 47
Car: 1991 base firebird
Engine: tbi 305
Transmission: 700r4
Re: Can't get rear to sit even.

i didnt measure it before but i never noticed it was lower one side. it certainly wasn't low enough for a tire to rub.
Reply
Old Oct 6, 2022 | 05:39 PM
  #13  
Evilokc's Avatar
Thread Starter
Senior Member
5 Year Member
Liked
 
Joined: Apr 2016
Posts: 733
Likes: 47
Car: 1991 base firebird
Engine: tbi 305
Transmission: 700r4
Re: Can't get rear to sit even.

i released the suspension and re tightened and its fairly even now. i appreciate the suggestion. the car does sit lower now though. has anyone noticed a ride height change with the 4th gen rear end swap?
Reply
Old Oct 12, 2022 | 07:54 AM
  #14  
Abubaca's Avatar
Moderator
25 Year Member
Liked
Loved
iTrader: (3)
 
Joined: Feb 2001
Posts: 8,494
Likes: 411
From: Sophia, NC
Car: 2016 Camaro SS + 1986 Z28
Re: Can't get rear to sit even.

If you're looking for a little extra height, 4th gen spring isolators will give you about 3/4" of an inch extra height.
Reply
Old Oct 12, 2022 | 03:30 PM
  #15  
vorteciroc's Avatar
Supreme Member
15 Year Member
Loved
Community Favorite
Top Answer: 1
 
Joined: Jul 2006
Posts: 2,863
Likes: 788
From: 212 is up in this Bit@#
Car: Resto-Mod 1987 IROC-Z Clone
Engine: Alky fed L92 Vortec Twin-Turbo 6.8L
Transmission: My own built/ design 4L80M
Axle/Gears: Custom 12 bolt (4.10:1)
Re: Can't get rear to sit even.

The Rear Axle Assembly or the Uni-Body are most likely a little tweaked.
Reply
Old Dec 2, 2022 | 08:13 PM
  #16  
Morphues's Avatar
Junior Member
 
Joined: Sep 2022
Posts: 7
Likes: 0
From: Oklahoma
Car: Looking for a 91-92 camaro.
Engine: Collecting for ls swap turbo
Axle/Gears: 9 bolt 3.27
Re: Can't get rear to sit even.

When I do suspension work. I always try to mark where each arm is positioned angle wise. That way when I put new in it’s ride height doesn’t change.

Collision repair tech. Most of what I do it wrecked so doing that helps diag if there is other problems. Insurance doesn’t always want to buy what we tell them.
Reply
Old Dec 3, 2022 | 12:29 PM
  #17  
Evilokc's Avatar
Thread Starter
Senior Member
5 Year Member
Liked
 
Joined: Apr 2016
Posts: 733
Likes: 47
Car: 1991 base firebird
Engine: tbi 305
Transmission: 700r4
Re: Can't get rear to sit even.

I'm usually better about it myself. I was injured and getting help from my cousin and not paying enough attention. its all good now.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
KNIGHTE
Transmissions and Drivetrain
7
Jun 30, 2015 12:58 PM
bad86z28
Suspension and Chassis
5
Feb 25, 2014 11:16 AM
87350IROC
Suspension and Chassis
39
Sep 14, 2010 10:43 AM
devianb
Auto Detailing and Appearance
18
Jan 2, 2004 11:15 PM
Ovrclck350
V6
4
Jul 1, 2003 01:43 AM




All times are GMT -5. The time now is 02:07 PM.