Diff Bushing Replacement - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Matty Ice · 10-15-2018, 08:16 AM

I need to replace my differential bushings and need some help deciding which ones to go with. For those of you that have done this, any feedback/recommendations would be great. I want to go with the Derlin type but I'm leery based on some of the complaints of the NVH. I am also looking at the off set bushings as I am lowered on -1.25 BMR springs. Any advice/suggestions would be helpful. THANKS!

FYI- I have done a search and looking for more recent and detailed info.

BMR Sales · 10-15-2018, 03:10 PM

Why do you think you need new Diff Bushings?

anything harder than OEM will provide NVH a path to travel through.

brick59 · 10-15-2018, 03:41 PM

I have the BMR Delrin bushings on mine you are going to get move NVH to me it was acceptable, my car is not a daily driver it may see 600 to 1000 miles a year so if you drive it every day it may be more noise than you want. I was looking to stiffen up the rear suspension as much as possible for drag racing.

SynergyGreenSS · 10-15-2018, 03:57 PM

I have BMR’s bushings. My car is a daily and it is definitely more jolting on bumps than stock and you do get more NVH all around but to me it’s really not much of an inconvenience, and I don’t think it would really bother most people all that much

AG1LE · 10-15-2018, 04:52 PM

I have the delrin offset bushings in a Z/28 differential, and get a lot of noise; however, I also have a lot of other suspension-stiffening upgrades (some of which I installed at the same time as the delrin diff bushings) that increase NVH, so it would be difficult to compare. I also have LT headers with no cats and often leave the NPP "open" - this probably also contributes to how much NVH is noticeable in the cabin.

I've mostly gotten used to it, and now just chalk it up to "race car noises".

You may want to list your other suspension-stiffening upgrades and see if anyone with a similar setup could provide feedback relevant to your setup.

brick59 · 10-15-2018, 05:26 PM

I agree with AG1LE I have BMR everything under my car and it was done all at the same time so the noise adds up.

Matty Ice · 10-15-2018, 11:32 PM

Thanks everyone for the replies, much appreciated. I put on about 3k miles a year. My current mods are: Z28 CAI, LT's, hi-flo cats with the NPP fuse pulled, -1.25 BMR's, B6's, JPSS rear sway, Z28 RUCA bushings, JPSS castor locks. So this thing is pretty noisy now.

I have a Z28 diff that going in asap, with solid rear cradle bushings next.

AG1LE- Do you feel the offset bushings worked/helped as advertised??? I figure if I am going with the derlin might as well go with those.

AG1LE · 10-16-2018, 04:22 AM

Quote:

Originally Posted by Matty Ice

AG1LE- Do you feel the offset bushings worked/helped as advertised??? I figure if I am going with the derlin might as well go with those.

I haven't really put them to the test. The diff bushings were something I did because I already had the diff out while doing a series of upgrades.

Matty Ice · 10-16-2018, 09:41 AM

How do you like the Z28 diff compared to the stock one? As far as traction, did you notice a difference?

Chris49066SS · 10-16-2018, 04:03 PM

Quote:

Originally Posted by Matty Ice

Thanks everyone for the replies, much appreciated. I put on about 3k miles a year. My current mods are: Z28 CAI, LT's, hi-flo cats with the NPP fuse pulled, -1.25 BMR's, B6's, JPSS rear sway, Z28 RUCA bushings, JPSS castor locks. So this thing is pretty noisy now.

I have a Z28 diff that going in asap, with solid rear cradle bushings next.

AG1LE- Do you feel the offset bushings worked/helped as advertised??? I figure if I am going with the derlin might as well go with those.

I just did my cradle bushings and went with solids, they are excellent.

See my post on the install, I provide a detailed instruction with tools required, sizes which will save you multiple trips back to the hardware store, a video of me removing a bushing, AND a torque spec table.

www.camaro5.com/forums/showthread.php?t=540578

Matty Ice · 10-17-2018, 04:20 PM

Yep! I already have that printed out, saw it when you posted. Thanks for putting that info out there.

Chris49066SS · 10-17-2018, 04:30 PM

Quote:

Originally Posted by Matty Ice

Yep! I already have that printed out, saw it when you posted. Thanks for putting that info out there.

No problem, glad to help

10-15-2018, 08:16 AM	#1
Matty Ice Drives: 2015 SS/RS 1LE Join Date: Dec 2014 Location: Milwaukee, WI Posts: 537	Diff Bushing Replacement I need to replace my differential bushings and need some help deciding which ones to go with. For those of you that have done this, any feedback/recommendations would be great. I want to go with the Derlin type but I'm leery based on some of the complaints of the NVH. I am also looking at the off set bushings as I am lowered on -1.25 BMR springs. Any advice/suggestions would be helpful. THANKS! FYI- I have done a search and looking for more recent and detailed info.

10-15-2018, 03:41 PM	#3
brick59 Sucker Punch Drives: 2013 Black ZL1, 2007 Silverado LTZ Join Date: Jul 2014 Location: N.E. Ohio Posts: 275	I have the BMR Delrin bushings on mine you are going to get move NVH to me it was acceptable, my car is not a daily driver it may see 600 to 1000 miles a year so if you drive it every day it may be more noise than you want. I was looking to stiffen up the rear suspension as much as possible for drag racing. __________________ 427 Dart SHP Pro LS Block, Callies Magnum Crank, Callies Ultra I Beam Rods, Diamond Pistons, AGP twin Turbos 6865, Mast heads, Cam Motion LLR cam, Morel tie bar lifters, Crower roller rockers, NW 103MM TB, ID2600 XDS, Fore Triple, DSX, E85, ARH Turbo Headers, Corsa, Jakes stage 5 4L80, Circle D, RPM Roll Bar, BMR, Carlyle Racing 15" conversion kit.

10-15-2018, 03:57 PM	#4
SynergyGreenSS Drives: 2011 2SS Join Date: Mar 2015 Location: Arlington, Texas Posts: 1,333	I have BMR’s bushings. My car is a daily and it is definitely more jolting on bumps than stock and you do get more NVH all around but to me it’s really not much of an inconvenience, and I don’t think it would really bother most people all that much __________________ 2011 SS L99 LSA Supercharger, BTR Stage 3 PDS Cam, Yank 3200SS, Weapon X Stage 2 intake, LSA Heads, Flex Fuel, Ported throttle body, Speed Engineering Headers, NOWEEDS, ZL1 fuel pump, DSX AUX Pump, ID-1050X injectors, 3” pipe to NPP mufflers, 3.91 gears

10-15-2018, 05:26 PM	#6
brick59 Sucker Punch Drives: 2013 Black ZL1, 2007 Silverado LTZ Join Date: Jul 2014 Location: N.E. Ohio Posts: 275	I agree with AG1LE I have BMR everything under my car and it was done all at the same time so the noise adds up. __________________ 427 Dart SHP Pro LS Block, Callies Magnum Crank, Callies Ultra I Beam Rods, Diamond Pistons, AGP twin Turbos 6865, Mast heads, Cam Motion LLR cam, Morel tie bar lifters, Crower roller rockers, NW 103MM TB, ID2600 XDS, Fore Triple, DSX, E85, ARH Turbo Headers, Corsa, Jakes stage 5 4L80, Circle D, RPM Roll Bar, BMR, Carlyle Racing 15" conversion kit.

10-15-2018, 03:10 PM	#2
BMR Sales Drives: Race Car Join Date: Sep 2009 Location: Seffner, FL Posts: 6,226	Why do you think you need new Diff Bushings? anything harder than OEM will provide NVH a path to travel through.

10-15-2018, 04:52 PM	#5
AG1LE Drives: '14 1LE Join Date: Nov 2013 Location: NJ Posts: 2,435	I have the delrin offset bushings in a Z/28 differential, and get a lot of noise; however, I also have a lot of other suspension-stiffening upgrades (some of which I installed at the same time as the delrin diff bushings) that increase NVH, so it would be difficult to compare. I also have LT headers with no cats and often leave the NPP "open" - this probably also contributes to how much NVH is noticeable in the cabin. I've mostly gotten used to it, and now just chalk it up to "race car noises". You may want to list your other suspension-stiffening upgrades and see if anyone with a similar setup could provide feedback relevant to your setup.

10-15-2018, 11:32 PM	#7
Matty Ice Drives: 2015 SS/RS 1LE Join Date: Dec 2014 Location: Milwaukee, WI Posts: 537	Thanks everyone for the replies, much appreciated. I put on about 3k miles a year. My current mods are: Z28 CAI, LT's, hi-flo cats with the NPP fuse pulled, -1.25 BMR's, B6's, JPSS rear sway, Z28 RUCA bushings, JPSS castor locks. So this thing is pretty noisy now. I have a Z28 diff that going in asap, with solid rear cradle bushings next. AG1LE- Do you feel the offset bushings worked/helped as advertised??? I figure if I am going with the derlin might as well go with those.

10-16-2018, 09:41 AM	#9
Matty Ice Drives: 2015 SS/RS 1LE Join Date: Dec 2014 Location: Milwaukee, WI Posts: 537	How do you like the Z28 diff compared to the stock one? As far as traction, did you notice a difference?

10-17-2018, 04:20 PM	#11
Matty Ice Drives: 2015 SS/RS 1LE Join Date: Dec 2014 Location: Milwaukee, WI Posts: 537	Yep! I already have that printed out, saw it when you posted. Thanks for putting that info out there.