Rear end sag on driver side.

majcutlass · January 17th, 2008, 05:50 PM

My cutlass has a driver side lean in the rear any input on what maybe causing this? Have relplace the rear shocks and springs. Did not fix the problem. Starting to look at the front end for faults should I do this or is it in the rear??? Crazyboutolds has given some input but still looking for more.

majcutlass · January 17th, 2008, 06:12 PM

No Accident, No rust, No bent trailing arms... Crazyboutolds recommended looking at bushings. Which sounds good.

Olds64 · January 18th, 2008, 10:57 AM

You know, I have heard of this problem. I think it is common on Cutlasses. I have heard some people just install air shocks and put more air on one side. I think it might have something to do with the perch points for the rear trailing arms. I am not sure. Do a search here or at realoldspower and you might find something.

Oldsguy · January 18th, 2008, 12:22 PM

Could you measure the frame at particular points and compare left to right? Maybe you could identify or eliminate something that way. Sort of what Jesse was getting at about the perch mounts. You could determine if it was the frame or the body that is lopsided then.

Omicron · March 24th, 2008, 12:03 PM

I have the same problem too, even after replacing all springs and shocks front and rear. Am about ready to go to airshocks in the rear, as Olds64 mentions above. If anyone here has a definitive solution, I'd love to hear it.

Oldsguy · March 24th, 2008, 12:24 PM

We need a good frame and body person on this site.......

joe_padavano · March 24th, 2008, 12:36 PM

If it's the G-body in the picture that you're talking about, have you inspected the frame for rust? These cars are notorious for rust in the rear frame rails. Second, inspect for cracks in the spring pockets in the frame that could be allowing one side to sag. I had this happen on a 70 Supreme. Third, inspect the rubber body mounts as well as the tabs for them on the frame. Again, deteriorated rubber or rusted mounts can cause a sag. Finally, have you verified the problem is with the frame, or the body? With the tires properly inflated, park on a flat, level surface. Carefully measure from the ground to the underside of the frame rails at a number of reference points. Compare the two sides. If the frame is parallel to the ground, the problem is the body.

Oh, and you DID remove the 455 block from the trunk, didn't you...

The_Jeremiah · March 24th, 2008, 01:21 PM

Definently check all your body mounts, and your shims for your axle. Its hard to tell from here what your problem is, lol reminds me of jeeps, they all lean to the left, no matter what you do, LOL

Omicron · March 24th, 2008, 08:40 PM

Quote:

Originally Posted by Oldsguy

We need a good frame and body person on this site.......

I couldn't agree more.

FWIW, I actually took my car to a body shop that has a frame machine, and had them check the frame. All was fine there, and L/R measurements were the same.

Omicron · March 24th, 2008, 08:42 PM

Quote:

Originally Posted by joe_padavano

If it's the G-body in the picture that you're talking about, have you inspected the frame for rust? These cars are notorious for rust in the rear frame rails. Second, inspect for cracks in the spring pockets in the frame that could be allowing one side to sag. I had this happen on a 70 Supreme. Third, inspect the rubber body mounts as well as the tabs for them on the frame. Again, deteriorated rubber or rusted mounts can cause a sag. Finally, have you verified the problem is with the frame, or the body? With the tires properly inflated, park on a flat, level surface. Carefully measure from the ground to the underside of the frame rails at a number of reference points. Compare the two sides. If the frame is parallel to the ground, the problem is the body.

Oh, and you DID remove the 455 block from the trunk, didn't you...

Some great advice Joe... definitely things I'll be looking at. Thanks!

And oddly enough, while not a 455 block in the trunk, that was where I had my tools. I removed them and it did seem to help a bit. Next experiment will be to see if it levels it if I put them on the right rear.

tmcfall · April 11th, 2008, 07:51 AM

I have the same problem...but I'm thinking its my "Big Ol' Behind" that is causing the issue.....

January 17th, 2008, 05:50 PM	#1 (permalink)
majcutlass Registered User Join Date: May 2007 Posts: 56	Rear end sag on driver side. My cutlass has a driver side lean in the rear any input on what maybe causing this? Have relplace the rear shocks and springs. Did not fix the problem. Starting to look at the front end for faults should I do this or is it in the rear??? Crazyboutolds has given some input but still looking for more. __________________

January 17th, 2008, 06:12 PM	#2 (permalink)
majcutlass Registered User Join Date: May 2007 Posts: 56	No Accident, No rust, No bent trailing arms... Crazyboutolds recommended looking at bushings. Which sounds good. __________________

January 18th, 2008, 10:57 AM	#3 (permalink)
Olds64 Landyacht Club President Join Date: Jul 2007 Location: Lawton, OK Posts: 4,286	You know, I have heard of this problem. I think it is common on Cutlasses. I have heard some people just install air shocks and put more air on one side. I think it might have something to do with the perch points for the rear trailing arms. I am not sure. Do a search here or at realoldspower and you might find something. __________________ Ferris, my father loves this car more than life itself... Apparently, you don't understand! Ferris, he never drives it! He just rubs it with a diaper! Cameron Frye Ferris Bueller's Day Off 1986

January 18th, 2008, 12:22 PM	#4 (permalink)
Oldsguy Hot Rodder at heart Administrator Join Date: May 2004 Location: Lees Summit MO Posts: 5,360	Could you measure the frame at particular points and compare left to right? Maybe you could identify or eliminate something that way. Sort of what Jesse was getting at about the perch mounts. You could determine if it was the frame or the body that is lopsided then. __________________ Dan '77 Cutlass Supreme '46 2 door "The rocket 455.....it's a sledgehammer approach to a thumbtack world" LuxBlue of HAMB.

March 24th, 2008, 12:24 PM	#6 (permalink)
Oldsguy Hot Rodder at heart Administrator Join Date: May 2004 Location: Lees Summit MO Posts: 5,360	We need a good frame and body person on this site....... __________________ Dan '77 Cutlass Supreme '46 2 door "The rocket 455.....it's a sledgehammer approach to a thumbtack world" LuxBlue of HAMB.

March 24th, 2008, 12:03 PM	#5 (permalink)
Omicron Administrator & Motorhead Join Date: Jul 2006 Location: Northern Colorado Posts: 688	I have the same problem too, even after replacing all springs and shocks front and rear. Am about ready to go to airshocks in the rear, as Olds64 mentions above. If anyone here has a definitive solution, I'd love to hear it.

March 24th, 2008, 12:36 PM	#7 (permalink)
joe_padavano Super Moderator Join Date: Mar 2007 Location: Northern VA Posts: 4,402	If it's the G-body in the picture that you're talking about, have you inspected the frame for rust? These cars are notorious for rust in the rear frame rails. Second, inspect for cracks in the spring pockets in the frame that could be allowing one side to sag. I had this happen on a 70 Supreme. Third, inspect the rubber body mounts as well as the tabs for them on the frame. Again, deteriorated rubber or rusted mounts can cause a sag. Finally, have you verified the problem is with the frame, or the body? With the tires properly inflated, park on a flat, level surface. Carefully measure from the ground to the underside of the frame rails at a number of reference points. Compare the two sides. If the frame is parallel to the ground, the problem is the body. Oh, and you DID remove the 455 block from the trunk, didn't you... __________________ Joe Padavano 64 Jetstar 88 Conv 66 442 L-69 Conv 68 W-30 69 H/O 69 442 70 W-30 72 442 84 Custom Cruiser 86 Caprice wagon (w/307 Olds)

March 24th, 2008, 01:21 PM	#8 (permalink)
The_Jeremiah Registered User Join Date: Jul 2007 Posts: 294	Definently check all your body mounts, and your shims for your axle. Its hard to tell from here what your problem is, lol reminds me of jeeps, they all lean to the left, no matter what you do, LOL __________________ 69' Cutlass 4 door. Built 455 inside, grandma's grocery getter outside. Best sleeper in disguise.

April 11th, 2008, 07:51 AM	#11 (permalink)
tmcfall Junior Member Join Date: Apr 2008 Posts: 5	I have the same problem...but I'm thinking its my "Big Ol' Behind" that is causing the issue.....

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