Clunking after bush install Help! - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

rjames · 10-12-2013, 01:14 PM

Ok got my car back after I had the cradle bushings and the diff bushings installed. Now over a rough road I have a clunking noise and it seems to be coming from the drivetrain. I also noticed a clunking noise when I went to back up the car out of the drive. Anyone had this happen to them. It seems everything is tight and in line. Also the alignment is spot on also. Driving me crazy.

Pedders bushings 1201's cradle
and ep1167HD's Diff

rjames · 10-13-2013, 01:58 PM

Just took it out for another drive and now realize that something seems to be shifting around . I mean when I let the clutch out in forward or reverse I get the same noise as when driving. i also don't seem to get it while the clutch is out and pressure is on the rear . But I do get it when the car is coasting over bumpy roads.
I am wondering do the stock bolts fit snugly in the new sleeves of the pedders ferule in the new bushings? I did not do this so I did not take it apart so am not sure. If I sit in the drive with the e-brake on and let the clutch out and in and rock the car a bit i get the noise so it seems like something is moving around. I did check all the bolts and everything is very tight.
Just fustrating!

silverz28 · 05-05-2014, 03:50 PM

Any solution?

BMR Sales · 05-08-2014, 12:28 PM

It "could" the slack in the driveline and/or backlash in the gears that you're hearing. It's something that has probably always been there, but the new differential bushings are known for transmitting more NVH and noises that were previously suppressed by the factory differential bushings. Bottom line....you'll get better performance from the new diff bushings, but you will hear noises that you never heard before!!!

10-12-2013, 01:14 PM	#1
rjames Drives: 2012 45th 2ss Join Date: Aug 2013 Location: Iowa Posts: 102	Clunking after bush install Help! Ok got my car back after I had the cradle bushings and the diff bushings installed. Now over a rough road I have a clunking noise and it seems to be coming from the drivetrain. I also noticed a clunking noise when I went to back up the car out of the drive. Anyone had this happen to them. It seems everything is tight and in line. Also the alignment is spot on also. Driving me crazy. Pedders bushings 1201's cradle and ep1167HD's Diff __________________ 2012 45th M6 Coupe, Stock internals,Cam/springs,ARH 1 7/8 cat delete,Flowmaster american thunder Cat back, 3:91 gears and K&N Cold air kit. 484 RWHP 454 TQ.Acs body kit,Bmr 1" springs,Vfn copo hood going on soon! Tuned by Speed Inc. Dss 3 1/2 aluminum shaft, Dss 1000hp level 4 shafts, Eaton True Track.

10-13-2013, 01:58 PM	#2
rjames Drives: 2012 45th 2ss Join Date: Aug 2013 Location: Iowa Posts: 102	Just took it out for another drive and now realize that something seems to be shifting around . I mean when I let the clutch out in forward or reverse I get the same noise as when driving. i also don't seem to get it while the clutch is out and pressure is on the rear . But I do get it when the car is coasting over bumpy roads. I am wondering do the stock bolts fit snugly in the new sleeves of the pedders ferule in the new bushings? I did not do this so I did not take it apart so am not sure. If I sit in the drive with the e-brake on and let the clutch out and in and rock the car a bit i get the noise so it seems like something is moving around. I did check all the bolts and everything is very tight. Just fustrating! __________________ 2012 45th M6 Coupe, Stock internals,Cam/springs,ARH 1 7/8 cat delete,Flowmaster american thunder Cat back, 3:91 gears and K&N Cold air kit. 484 RWHP 454 TQ.Acs body kit,Bmr 1" springs,Vfn copo hood going on soon! Tuned by Speed Inc. Dss 3 1/2 aluminum shaft, Dss 1000hp level 4 shafts, Eaton True Track.

05-05-2014, 03:50 PM	#3
silverz28 Drives: 1996 Camaro Z28, 2012 2SS/RS Join Date: Aug 2012 Location: Texas Posts: 279	Any solution? __________________ 2012 2SS/RS IOM, LS3, Aftermarket Hurst shifter, IOM interior, Borla "S", 1 7/8 Big Flow headers, ADM Race cold air, BMR 1" lowering springs, SLP Supercharger, Custom Comp Cam, Fore Innovations twin pumps, Flex Fuel Sensor

05-08-2014, 12:28 PM	#4
BMR Sales Drives: Race Car Join Date: Sep 2009 Location: Seffner, FL Posts: 6,226	It "could" the slack in the driveline and/or backlash in the gears that you're hearing. It's something that has probably always been there, but the new differential bushings are known for transmitting more NVH and noises that were previously suppressed by the factory differential bushings. Bottom line....you'll get better performance from the new diff bushings, but you will hear noises that you never heard before!!!