Popping sound from rear of car.

[91CoupeMike]

My first thought was control arm bushings, they were dry and nasty so I replaced the lower control arms with stockers with poly bushings, checked the torque box for damage while I was there and everything looks good.

I get the sound when I take off from a stop sign, go from reverse to forward vise versa, or when I decel and then accel while coasting. It happens right as I let out of the clutch. It does not do it while turning or hitting bumps.

If I hold the brakes and keep the car fro moving and slowly let out the clutch without stalling in forward or reverse it does not do it.

What is this? The rear end is trash, the ring and pinion and wheel/axle bearings and diff clutches are crap. The gears howl like nobodys business, and there is excessive axle play.

Could this be excessive backlash from worn out gears? Side/spyder gears?

A torque box?

It started doing this a while back and has gotten worse over time. I don't get on the car much at all, and I've only made 5 passes at the track, 2 of which were on street tires. It was getting 2.0 60fts with easy launch on slicks.. 1 tire fire..

Any input would be greatly appreciated.

[dee]

Did you check the uppers?

[Rustang]

Check the uppers too. Also, I know you can't make it do it with your foot on the brake, but check the driveshaft bolts too. Chances are it's control arm bushings, or even loose control arm bolts.

[91CoupeMike]

I have a new axle housing, new gears, 31 spline carrier that needs spyder gears, all new bearings and seals. I just need the axles and spyder gears and assemble it all.

I also have torque box weld in re-enforcement plates for the boxes.

I just need to get it all done, I have a lot of crap to do.

The car sits about a 1/2 - 3/4 inch higher on the passenger side in the rear. I was told that could be from torque boxes and or control arms. The springs are rotated the same and there are no isolators. Car also has subframe connectors.

The car has always set higher on the right ride since I got it. So I'm somewhat puzzled as it wasn't caused by my ramp-action.

Bent axle tubes? I checked them with a sqaure and they seemed fine.

Grr!

[Cooter]

the upper control arm mounts can rip away from the body also

[91CoupeMike]

the upper control arm mounts can rip away from the body also

Those look good I had to take the muffler hanger off recently and I checked them out.

I did recently pull the uppers off the diff to drop the rear end to take the tailpipes off. I will double check my work when it cools down.

[91CoupeMike]

Dun dun dun!

Thanks guys for pointing me in the right direction!

[91CoupeMike]

That being said.. Car is down. It's my only ride. Anyone of you guys have a set of upper arms?

Stock ?

After market?

If I can get er fixed and cleaned up I'll be at the track tomorrow night trying the "new" set up out!

No wonder my 60fts were dingle berries..

[sosoe]

That being said.. Car is down. It's my only ride. Anyone of you guys have a set of upper arms?

Stock ?

After market?

If I can get er fixed and cleaned up I'll be at the track tomorrow night trying the "new" set up out!

No wonder my 60fts were dingle berries..

I do, Im In keller youngster.

[91CoupeMike]

I do, Im In keller youngster.

Stock or what?

What do you want for them? My girlfriend gets off work at 7 tomorrow so I can meet you after that.

[STROKD]

I was about to post the uppers might be bad. Mine did that and the bushing fell out in dust when I removed them. I installed the UPR (wolfe copys)adjustable heim joint ones... They helped with ride and traction.

[91CoupeMike]

I plan on doing those with some beefy lowers and eventually an anti roll bar in the back.. I figure with all that and a 6pnt cage it should launch like a mo fo..

But I just need it back on the road for now!

[onjacks]

just drill/burn them out, go to oriellys and stick some poly bushings in. cheap fast.

[Baron Von Crowder]

dont put poly bushings in the uppers.

[91CoupeMike]

dont put poly bushings in the uppers.

Rough ride? Or greatly increased risk of tearing a box?