12 Bolt Rebuild Opinions Wanted - The 1947 - Present Chevrolet & GMC Truck Message Board Network

77K10Silverado · 01-25-2015, 07:58 PM

Just looking for suggestions on how you would rebuild my 12 bolt with GM locker from my 77 K10. Axle, bearing, and gear manufacture? Paint or powdercoat the housing? Thanks for any input!

77K10Silverado · 01-25-2015, 10:42 PM

I guess to generate some interest.. yukon or Moser axles?

Jake Wade · 01-26-2015, 07:54 AM

Are you talking gears and all?

77 ChevySport · 01-26-2015, 09:21 AM

Quote:

Originally Posted by 77K10Silverado

Just looking for suggestions on how you would rebuild my 12 bolt with GM locker from my 77 K10. Axle, bearing, and gear manufacture? Paint or powdercoat the housing? Thanks for any input!

Here is a picture of my 77 Shortbed 12 Bolt which is powder painted to 60%
gloss. All stock parts where used. Larry

andrewmp6 · 01-26-2015, 09:46 AM

Depends if you want bigger tires and a lift or leave the truck stock.

**MikeB** · 01-26-2015, 10:05 AM

Is something wrong with the 12-bolt now? Do you know what gear ratio it has and what you need?

I've always had good support from Randy's Ring and Pinion. Their Yukon R+P gears are as quiet as OEM. And they can fix you up with everything needed for the job including Timken bearings.

Several years ago I bought a brand new pair of 12-bolt axles from Moser Engineering for $245. I suspect they cost more now, but even $300 is a reasonable price. Randy's sells axles, too.

77K10Silverado · 01-26-2015, 10:55 AM

Guys this is a stock restoration. 3.07 gears. I plan on redoing the axles, bearings and possibly the gears but they look real clean so I may not. Nothing's wrong other than needing fresh bearings. They look to be burned up. The axles look a little mared where they were ridding the shaft bearings..

77K10Silverado · 01-26-2015, 11:05 AM

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77K10Silverado · 01-26-2015, 11:08 AM

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77K10Silverado · 01-26-2015, 11:08 AM

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68post · 01-26-2015, 12:42 PM

Yeah , you need new axles too.
Tom's Differentials Inc. also has good prices and quality axles and parts.
I'd be worried about gear whine reusing those gears , they'll need to be setup exactly as they came out to mesh into the same pattern.
Find your best local shop that specializes in rear axles and have them do the job - they'll also let you know if reusing them is OK.

If you're just doing a refresh and don't need to re-shim the diff or pinion, you should be fine !

Jaysonb · 01-26-2015, 03:45 PM

Just a thought, they make bearing seal combos that scoot the bearing over, to ride on new metal. I found them on rock auto.

77K10Silverado · 01-26-2015, 06:08 PM

Jaysonb, I have heard of these. I wonder if there is enough meat on the stick to be quiet. Thanks for the suggestions guys.

01-25-2015, 07:58 PM	#1
77K10Silverado Registered User Join Date: Jul 2014 Location: Winston-Salem, NC Posts: 561	12 Bolt Rebuild Opinions Wanted Just looking for suggestions on how you would rebuild my 12 bolt with GM locker from my 77 K10. Axle, bearing, and gear manufacture? Paint or powdercoat the housing? Thanks for any input!

01-25-2015, 10:42 PM	#2
77K10Silverado Registered User Join Date: Jul 2014 Location: Winston-Salem, NC Posts: 561	Re: 12 Bolt Rebuild Opinions Wanted I guess to generate some interest.. yukon or Moser axles?

01-26-2015, 07:54 AM	#3
Jake Wade Registered User Join Date: Aug 2005 Location: Louisiana Posts: 711	Re: 12 Bolt Rebuild Opinions Wanted Are you talking gears and all?

01-26-2015, 09:46 AM	#5
andrewmp6 Registered User Join Date: Jan 2009 Location: Louisville,Ky Posts: 5,811	Re: 12 Bolt Rebuild Opinions Wanted Depends if you want bigger tires and a lift or leave the truck stock.

01-26-2015, 10:05 AM	#6
MikeB Senior Member Join Date: Jul 2000 Location: North Texas Posts: 3,484	Re: 12 Bolt Rebuild Opinions Wanted Is something wrong with the 12-bolt now? Do you know what gear ratio it has and what you need? I've always had good support from Randy's Ring and Pinion. Their Yukon R+P gears are as quiet as OEM. And they can fix you up with everything needed for the job including Timken bearings. Several years ago I bought a brand new pair of 12-bolt axles from Moser Engineering for $245. I suspect they cost more now, but even $300 is a reasonable price. Randy's sells axles, too. __________________ Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!

01-26-2015, 10:55 AM	#7
77K10Silverado Registered User Join Date: Jul 2014 Location: Winston-Salem, NC Posts: 561	Re: 12 Bolt Rebuild Opinions Wanted Guys this is a stock restoration. 3.07 gears. I plan on redoing the axles, bearings and possibly the gears but they look real clean so I may not. Nothing's wrong other than needing fresh bearings. They look to be burned up. The axles look a little mared where they were ridding the shaft bearings..

01-26-2015, 11:05 AM	#8
77K10Silverado Registered User Join Date: Jul 2014 Location: Winston-Salem, NC Posts: 561	Re: 12 Bolt Rebuild Opinions Wanted

01-26-2015, 11:08 AM	#9
77K10Silverado Registered User Join Date: Jul 2014 Location: Winston-Salem, NC Posts: 561	Re: 12 Bolt Rebuild Opinions Wanted

01-26-2015, 12:42 PM	#11
68post Registered User Join Date: Jan 2014 Location: Indpls. , IN Posts: 795	Re: 12 Bolt Rebuild Opinions Wanted Yeah , you need new axles too. Tom's Differentials Inc. also has good prices and quality axles and parts. I'd be worried about gear whine reusing those gears , they'll need to be setup exactly as they came out to mesh into the same pattern. Find your best local shop that specializes in rear axles and have them do the job - they'll also let you know if reusing them is OK. If you're just doing a refresh and don't need to re-shim the diff or pinion, you should be fine ! Last edited by 68post; 01-26-2015 at 12:45 PM. Reason: clarity

01-26-2015, 03:45 PM	#12
Jaysonb Registered User Join Date: May 2009 Location: Good Thunder Mn. Posts: 955	Re: 12 Bolt Rebuild Opinions Wanted Just a thought, they make bearing seal combos that scoot the bearing over, to ride on new metal. I found them on rock auto.

01-26-2015, 06:08 PM	#13
77K10Silverado Registered User Join Date: Jul 2014 Location: Winston-Salem, NC Posts: 561	Re: 12 Bolt Rebuild Opinions Wanted Jaysonb, I have heard of these. I wonder if there is enough meat on the stick to be quiet. Thanks for the suggestions guys.



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