10-Bolt Help
Thread Starter
TECH Apprentice
Joined: Jun 2014
Posts: 305
Likes: 1
From: Houston, Texas
10-Bolt Help Well guys I am of the opinion that as soon as I have the money, this 10-bolt is going in the trash. The only thing stopping me is that I have yet to find a watts link that works with the 9" I want. Anyways I won't have the funds to do that until this summer anyways. I am throwing a new front end on the car.
The issue I am having is that my pinion bearing took a dump last spring. So I found a bolt in replacement but it was a 4-channel (mine is a 3). So I bought a motive 3.90 gear set, rebuild kit, and inner bearings. I had it installed. The rear end is unbelievably loud. I have Longtubes, ORY, and SLP Loudmouth II.... I can easily hear it over the car...
My mechanic does many things well but I don't think this is his forte. I drove it for 2 months just howling away. He finally got the car back and he told me that the "gear pattern, looks almost perfect". He believes the noise is coming from axle bearings and bad axles, and the possibility of a bad torsen.
Does this sound right? I just need something quiet that will hold up for 6-8 months till I can save up some more cash (just bought full UMI front suspension with Koni's). Any Ideas?
The issue I am having is that my pinion bearing took a dump last spring. So I found a bolt in replacement but it was a 4-channel (mine is a 3). So I bought a motive 3.90 gear set, rebuild kit, and inner bearings. I had it installed. The rear end is unbelievably loud. I have Longtubes, ORY, and SLP Loudmouth II.... I can easily hear it over the car...
My mechanic does many things well but I don't think this is his forte. I drove it for 2 months just howling away. He finally got the car back and he told me that the "gear pattern, looks almost perfect". He believes the noise is coming from axle bearings and bad axles, and the possibility of a bad torsen.
Does this sound right? I just need something quiet that will hold up for 6-8 months till I can save up some more cash (just bought full UMI front suspension with Koni's). Any Ideas?
Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
Hmmm, sounds more like a bearing or other internal issue to me then. If the gears were off a little they would whine or howl at certain speeds like for instance 40-60mph is common.
When I had a 10 bolt it had 3.73s. I put new bearings in it 1st year as the posi unit lost a clip & hogged the posi unit. So new used lt1 posi & all new bearings. Fairly quiet, still slight gear whine. After a few track days, noisy. Got much louder as the summer temps rose. At 90-100 degrees out it was brutal! When it cooled off it got quieter. I've checked the backlash on it, wasnt excessive. I think it was gear whine. It never let go but I bought a 9 inch before it did & got $$ out of it!
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Teching In
Joined: Aug 2015
Posts: 41
Likes: 0
What is your pinion preload set at? I was having noise issues too and rebuilt the rear, the pinion was about 1 in lbs now its at 7in lbs which is proper for reusing the original bearings, 15in lbs if your using new ones. what is your carrier preload? Should be around 20in lbs. What is your backlash set at? It should be between .006 and .010. You could try some torco oil too, should run quieter than other oils. I'm not an expert so I might be off on some of this but I was having issues myself and these things fixed my issues.
TECH Resident
Joined: Jun 2009
Posts: 856
Likes: 2
From: Elizabeth City NC
What is your pinion preload set at? I was having noise issues too and rebuilt the rear, the pinion was about 1 in lbs now its at 7in lbs which is proper for reusing the original bearings, 15in lbs if your using new ones. what is your carrier preload? Should be around 20in lbs. What is your backlash set at? It should be between .006 and .010. You could try some torco oil too, should run quieter than other oils. I'm not an expert so I might be off on some of this but I was having issues myself and these things fixed my issues.
OP the coast and drive contact looks good
Teching In
Joined: Aug 2015
Posts: 41
Likes: 0