When will my 10 bolt break?

**SVG210** · 11-30-2007, 02:41 PM

Originally Posted by breakparts

No Way Gm Wont Cover The Warranty On Your Rearend There Asses About The Rearends,unless Stock Like F1 Tires And Your Original Size Wheels Are On It.and Not Bald..also They Can Check Your Computer For Your Last Rpm Shifts So They Can Usually Tell You Beat It Up ,and They Will Do Anything To Make You Look At Fault...iv Been There But If Its Bone Stock And Making Noises But Still Driveable Mabey And Thats A Mabey...and Once 1 Dealership Denies You Then The Rest Will Be Notified...and If You Brought It To The Dealership To Get It Checked And They Denie You Be Prepared To Pay For Inspection And Reassembly...assholes They Are..and We Pay Extra For Nothing

True that man!!!

Last year my mom's suburban had a humming noise on it, turned out that the diff. had a couplbe of pinion gears broken in it. the total cost to fix it was 5,000, however she still had waranty... so this happened dec 1 2006 that didnt get fixed till dec 22 2006, but the warranty company was trying to blame fault on her, so a couple of guys from the company came and took pictrues and all that nonsence. bottom line its a headache better be safe than sorry.

**trprcar** · 12-31-2007, 03:11 PM

Im upgrading to 3:73 in my 10-bolt will the reluctor gear from the 3:42 work or can I get one for an S-10 ?? if so then which year S-10 any input you have will be greatly apprieciated Ive been reasearching this for a month no answers-Bill

**D.Rigsby** · 01-27-2008, 04:46 AM

Originally Posted by Zboner

on a second note the 8.5" 10 bolts hold up under a lot of HP, and have seen sub 8 second passes several times over. that is another way to get a great rear for a lot less price if your willing to take the time and have it narrowed.

Zboner, question? to have the 10 bolt narrowed, what does this mean?
I have a 8.5" 10 bolt 3.73 gears in my 04 5.3 Chevy short bed P/U. I want to go with 4.10 ring and pinion instead to get better eight of mile performance.
What do you think. D.Rigsby, N. Texas.

**TransAm11973** · 03-17-2008, 01:36 PM

guys i think my stock diff went to shit today, horrible grinding and clunking.....what the hell do i do!!?? Do i have to drop 3000 to get whole new rear? or can I upgrade the gears or something and have that installed?? I am seriously F-ed here. Need some good advice quickly thanks for your time

**intheclouds1977** · 03-17-2008, 02:48 PM

Spending $3k on any rear end is retarded. You can buy 10-bolts from junk yards for under $100 and bolt a 'new' one in.

**Y2KPewterSS** · 03-17-2008, 03:15 PM

Originally Posted by intheclouds1977

Spending $3k on any rear end is retarded. You can buy 10-bolts from junk yards for under $100 and bolt a 'new' one in.

When the rearend blows, there is a good chance it will take your tranny with it. I have seen it happen many times. My best friend had his stock 10 bolt blow at the track, it took his built 4l60E and 4000 stall with it. Very costly disaster for my friend. I would get tired of swapping 10 bolts after 1 or 2 times myself. I will gladly buy a real rearend instead of sticking junk 10 bolts back under my Camaro.

**intheclouds1977** · 03-17-2008, 03:23 PM

I'm not advocating bolting in another 10-bolt...but spending $100 for a junk yard one is a lot smarter than spending $3k to rebuild your stock 10-bolt back to stock.

**Kevin hayes** · 04-16-2008, 08:08 PM

today! look for 12 bolt

**Kevin hayes** · 04-16-2008, 08:11 PM

450 junk yard , go with 12 bolt or 9

**99CANADAHAWK** · 04-20-2008, 03:34 PM

What if I buy a diff cover for the 10 bolt for now , will that help the rear untill I can afford a 12 bolt ?

**Y2KPewterSS** · 04-20-2008, 04:39 PM

The covers help some, but you can still easily grenade a 10 bolt even with the cover.

**jujofields** · 04-21-2008, 06:33 PM

Originally Posted by Y2KPewterSS

The covers help some, but you can still easily grenade a 10 bolt even with the cover.

What cover do you recommend? I'm in the same situation; don't have the extra $$$$ yet to get a 12 or a 9, so I'd like to at least strengthen the stock 10 as much as possible until I can swap it out....

**Y2KPewterSS** · 04-21-2008, 07:03 PM

Originally Posted by jujofields

What cover do you recommend? I'm in the same situation; don't have the extra $$$$ yet to get a 12 or a 9, so I'd like to at least strengthen the stock 10 as much as possible until I can swap it out....

http://www.thunderracing.com/catalog...vid=3&pcid=210

I have been using that one for 2.5 years now and been pleased with it.

**Hot Black Trans-Am** · 04-21-2008, 07:20 PM

The cover will help keep the pieces in better too once it blows. I've had a bolt off a ring gear puncture a rear cover already. That was a GM 12 bolt with a chrome cover though. That was also a truck with a 454 BB with about 500HP and big grippy tires.

**Cutlass** · 04-30-2008, 03:51 AM

Originally Posted by Eagle

GM CORPORATE 10-BOLT
This 10-bolt, with a 8 1/2-inch ring gear diameter.

GM CORPORATE 12-BOLT
The stronger 12-bolt, with an 8 7/8-inch-diameter ring gear diameter.

Yes, the bolt count is associated with the cover, not the ring itself.

-Eagle

I WISH GM put the 8.5" 10 bolt in these cars. Then the whole rear end would be an issue for 99% of us. We got stuck with the 7.5" 10 bolt

**99CANADAHAWK** · 05-03-2008, 02:48 PM

I have a whining noise comming from my rear when I`m on the gas & doing about 80 - 100 KPH I don`t have enough money now to replace with a 12 bolt or equivalant . Now I know that the 10 bolt is crap but if I replace everything like stronger axles, a diff cover & say an Eaton Posi that should hold up allot better right ? I don`t intended to drag my car and I don`t plan on making anymore than say 450 HP on motor .
It`s only a weekend car I`am the eleventh owner of the car so I`m guessing it may have been hammerd on a bit in the past . So as far as parts go it`s about $1,200 - 1,500 CND compared to $4,000 for a 12 bolt .

Any Opinion`s other than the obvious ( the 10 bolt is crap )
Thanks .

**Cutlass** · 05-03-2008, 04:29 PM

Whining could be shot side bearings, which would be cheap and easy to replace. Otherwise I'm not at all opposed to beefing up a 7.5" 10 bolt a little bit. I'd say a eaton posi and support cover are as far as I would go. Skip the axles.

**99CANADAHAWK** · 05-04-2008, 06:04 AM

Thanks Cutlass I`m not too shure what the noise / vibration is yet but I hope it`s something as simple as that , I forgot to mention that my car is an A4 with a Torsen diff & I have not heard too many good things about the Torsen .

**epmedia** · 05-29-2008, 10:20 PM

A ten bolt may break when you burn rubber in reverse, up hill (post by experience).

You may be able to get by for a few months by pulling the cover and flushing all the metal bits out of the case and bearings. Bearings are tough. You probably just lost a few tooth-ends. A quiuck-temporary fix is what I mentioned above (hopefully for you).

Good Luck

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