88 LX 5.0 rear suspension issues - Mustang Evolution

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Old 07-25-2013, 09:07 AM   #1
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88 LX 5.0 rear suspension issues

My dad recently picked up a nice 88 lx 5.0 5 sp. it's been set up pretty good with a gt 40 intake( not the explorer type) a mass air conversion E 303 BBK headers o/r x pipe and some flowmasters. It has Polly mounts for the engine and trans ans Lakewood lca's along with adjustable uca's. we recently put in some new coils in the rear as well. The issue is that under a hard launch the rear end feels like its twisting towards the drivers side and there is a clunk when grabbing second. Is there a certain length for the uca's? It seems to sit really high in the rear even after installing lowering springs. We also installed new pro thane bushings in the uca's where they mount to the diff and the front mounts are the solid hiem joint style. Any suggestoins? Thanks
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Old 07-25-2013, 05:05 PM   #2
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Well the poly bushings up in the UCAs and aftermarket UCAs themselves can cause problems as mentioned but more likely you have a cracked torque box which is a common issue on these cars. Also if you have adjustable UCAs are you sure they are adjusted properly?

The stock 4 link setup really isn't very good in all honesty, I'd get it up on a lift, drop the rear end down and inspect the unibody and all attachement points if it is moving around that badly though...
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Old 07-25-2013, 09:34 PM   #3
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We've been under there a couple times and the torque boxes are solid. I was thinking the bushings in the lca's might be bad. Earlier i was talkin to dad and he says the guy he bought it from mentioned those bushings so thats where we are going to look next. Also just for a reference we were gonna measure the center to center on the old uca's and compare it the the current ones. It seems to sit high in the rear even with lowering springs.
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Old 07-26-2013, 05:05 PM   #4
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As scotty said, hard bushings can cause the suspension to bind and cause damage to torque boxes, so be careful with that. Do you have the quad shocks in?
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Old 07-26-2013, 08:34 PM   #5
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The quad shocks are still installed and we have greased the lca's. when we lowered the rear end to replace the springs we disconnected all the shocks and let the rear drop there wasn't and signs of binding. We are going to take the lca's off and inspect the bushings.
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Old 07-28-2013, 01:18 PM   #6
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That's funny. I have the same thing happening. 1-1-1/2 lowering springs and my rear seems higher.

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Old 07-28-2013, 01:47 PM   #7
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Old 07-28-2013, 01:48 PM   #8
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Old 07-28-2013, 01:49 PM   #9
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Tires on notch are a bit low but I can't see the sway bar on the old stock suspension. New control arms show the sway bar.
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Old 07-28-2013, 11:17 PM   #10
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Quote:
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Those tail lights
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Old 07-28-2013, 11:18 PM   #11
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Quote:
Originally Posted by Billymich View Post
Those tail lights
Circa 2001 FATF!
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Old 07-29-2013, 07:29 AM   #12
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Quote:
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Those tail lights
Lol. I bought it like that. I don't like them either. One side is pink from sun fading.

---------- Post added at 06:29 AM ---------- Previous post was at 06:26 AM ----------

Instead of teasing me about my taillights lol at my suspension.
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Old 07-29-2013, 10:24 AM   #13
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Why not laugh at both?
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Old 07-29-2013, 11:19 AM   #14
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Get rid of those ucas fast....go get some stock ucas if u can't afford to go with a panhard n torque arm set up which u take ucas and quads off and toss away...with ur set up its gonna mess up ur torque boxes and is actually dangerous if u take a hard bend and hit a pothole...
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Old 07-29-2013, 11:25 AM   #15
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We still have the stockers do ill throw them on and see what happens. What is wrong with the ones on it? They are adjustable so couldn't we set them to the center to center measurement of the stock uca's?
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Old 07-29-2013, 11:33 AM   #16
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Too stiff...the rear flexes so much and if ur ucas don't flex than ur torque boxes take the beating and the rear end will bind and jump around...put the stock ucas on and see how it feels...
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Old 07-29-2013, 11:34 AM   #17
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Alrighty, ill try that and see what happens. Thanks
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Old 07-29-2013, 11:43 AM   #18
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Best set up for a fun street/strip for drag and handling in my opinion is panhard and torque arm(remove ucas and quad shocks),adj lcas,good shocks...Frt coil overs, cc plates, and match Frt and rear aspiring rates...

---------- Post added at 12:41 PM ---------- Previous post was at 12:38 PM ----------

Depends on ur wants and pocket book...

---------- Post added at 12:43 PM ---------- Previous post was at 12:41 PM ----------

Anyways good luck lmk how it feels and if u still have any clunk noises...btw check ur u joints and sway bar....
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Old 07-29-2013, 12:09 PM   #19
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Well I can't use the stock UCA's. I had to cut them off. Lol. But I measured everything up against the stock parts before I installed them and uppers and lowers were exactly the same length. Brackets for the sway bar were on bottom of LCA so it makes my sway bar sit low. I have no handling problems aside from the 17's and my CC plates not being changed yet. Just wondered why the rear sat so high with a lowering kit. But for all I know it had a drag suspension in it before. I think it has a mean stance now with the front down more than the back. And it hooks right up.
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Old 07-29-2013, 12:18 PM   #20
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Lcas will definitely make it hook....I would suggest getting rubber bushings for the ucas have...I'm not sure wat exact#s r for pinion angle but check that too..
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