Rear End Swap
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Beginning Member
Joined: Mar 2009
Posts: 26
From: 35901
Rear End Swap
Ive got 1993 Blazer.
I blew the rear pinion bearing finally after it being bad for a yr.
My Rear Is 10bolt 8.5ring w/ 3.42 gears
What vehicles can i pull another rear from.
Hollander told me basically any GM vehicle from 89-99 that is 4x4 with same production code, and same 10 bolt with 30 spline axles w/ 6 bolt pattern.
I blew the rear pinion bearing finally after it being bad for a yr.
My Rear Is 10bolt 8.5ring w/ 3.42 gears
What vehicles can i pull another rear from.
Hollander told me basically any GM vehicle from 89-99 that is 4x4 with same production code, and same 10 bolt with 30 spline axles w/ 6 bolt pattern.
Last edited by bigfdaddy; Dec 20, 2009 at 04:43 PM.
Thread Starter
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Beginning Member
Joined: Mar 2009
Posts: 26
From: 35901
Update:
Whell instead of buying a rear end i decided to rebuild mine.I used ring and pinon from 98 tahoe with 3.73 gears but had to use my carrier housing.My axles wouldnt fit the tahoe carrier.
Got it all put together and ran pretty good. Shifted into 4wheel low and kablam same thing again Rear end blew something. Got it Home and pulled the cover. Found out i somehow chewed the back side of some of the teeth on the pinion but everything else is fine.No scaring on ring or carrier. No teeth messed up on carrier or spider gears.
My question Is HOW THE F*** I DID THIS all over again!
Any help much appreciated on how this happened and to prevent it again. IM NOT LOOKING FOR A THREE PEET.
Got it all put together and ran pretty good. Shifted into 4wheel low and kablam same thing again Rear end blew something. Got it Home and pulled the cover. Found out i somehow chewed the back side of some of the teeth on the pinion but everything else is fine.No scaring on ring or carrier. No teeth messed up on carrier or spider gears.
My question Is HOW THE F*** I DID THIS all over again!
Any help much appreciated on how this happened and to prevent it again. IM NOT LOOKING FOR A THREE PEET.
BF Guru
Joined: Sep 2009
Posts: 5,143
From: GTA, Ontario, CANADA
Why would you put a 3.73 R&P into the rear when your sig says that you have 3.42's???
Before you do any more work on your truck, you have to determine what gears are in the front axle. If they are 3.42's as you have indicated, then you MUST replace the rear with 3.42's.
Before you do any more work on your truck, you have to determine what gears are in the front axle. If they are 3.42's as you have indicated, then you MUST replace the rear with 3.42's.
Thread Starter
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Beginning Member
Joined: Mar 2009
Posts: 26
From: 35901
yes my truck came equipped with 3.42 gears. For the rear i put in 3.73. No i didnt change the front gears.I thought that i would be fine to switch the rear as long as i didnt use 4 wheel drive.
also when i engaged 4x4 my front didnt work anyways. bad actuator.
also when i engaged 4x4 my front didnt work anyways. bad actuator.
Last edited by swartlkk; Feb 15, 2010 at 12:44 PM. Reason: *Combining Consecutive Posts* - Please use the EDIT feature to include additional information in your post if another member has not replied.