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#1 |
Senior Member
![]() Join Date: Nov 2014
Location: Colorado
Posts: 3,225
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Help Id rear differential Eaton HO52 or?
Like the title says I just want to confirm the rear differential out of my 67 C20 is a Eaton HO52? I had no problems with it just swapped to 5 on 5" rear diff to complete my C20 long bed to C10 Short bed conversion. New diff has a little more freeway friendly 3.73 ratio vs old diffs 4.10.
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07' Extcab Silverado Z71 Silver Birch, 5.3L HO 71' Cheyenne C10 Hugger Orange on Saddle SWB Besides these two, too Many to count |
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#2 |
Senior Member
![]() Join Date: Mar 2003
Location: Colfax-California
Posts: 8,554
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Re: Help Id rear differential Eaton HO52 or?
Looks like one to me, how many bolts holding the 3rd member in and the rear cover?
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#3 |
Registered User
![]() Join Date: Apr 2012
Location: Stillwater, Oklahoma
Posts: 874
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Re: Help Id rear differential Eaton HO52 or?
Looks like it to me.
__________________
1971 C/10 SWB, 15x8 Rallys, 4.5" X 7" static drop, C-notched, 350/350, 3.73 Posi. .........A 383 and Gear Vendors are on my bucket list. 1972 GMC 4X4 K1500 Survivor - Sold No matter what problems life throws at you, your time on Earth can be incredibly fulfilling and rewarding.....if you just lower your expectations. -Phil Dunphy |
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#4 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,858
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Re: Help Id rear differential Eaton HO52 or?
It's not a Dana 60 so it's a corporate HO52
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#5 |
Registered User
![]() Join Date: Nov 2006
Location: KINGSPORT,TN.
Posts: 3,035
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Re: Help Id rear differential Eaton HO52 or?
c-20 is ho52,c-30 is ho72 . both models are extreamly obsoliete
__________________
I BELIEVE IN JOHN 3:16 |
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#6 |
Registered User
![]() Join Date: Apr 2015
Location: Ririe, Idaho
Posts: 136
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Re: Help Id rear differential Eaton HO52 or?
Well you're half right. I wouldn't say they are extremely obsolete. I'm doing gaskets and seals in my sons ho72 this week. Napa had everything in stock. They can be modified with 14 bolt brakes if desired and are generally tough as hell.
__________________
67 c30 Cab and Chassis (ex motorhome truck) 68 c10 LWB 70 c30 Cab and Chassis 133" converted to Longhorn 72 K10 LWB Rust Bucket Hunting Truck |
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#7 |
Registered User
![]() Join Date: Nov 2006
Location: KINGSPORT,TN.
Posts: 3,035
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Re: Help Id rear differential Eaton HO52 or?
I,am talkiin internals,
__________________
I BELIEVE IN JOHN 3:16 |
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#8 |
Registered User
![]() Join Date: Apr 2015
Location: Ririe, Idaho
Posts: 136
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Re: Help Id rear differential Eaton HO52 or?
Copy that and agree on internals.
__________________
67 c30 Cab and Chassis (ex motorhome truck) 68 c10 LWB 70 c30 Cab and Chassis 133" converted to Longhorn 72 K10 LWB Rust Bucket Hunting Truck |
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#9 | |
Registered User
Join Date: Jul 2011
Location: strausstown pa
Posts: 3,394
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Re: Help Id rear differential Eaton HO52 or?
Quote:
Op sorry for the jack
__________________
81 camaro 355 4/spd 342 posi my first love ![]() 67 swb step 454/4spd ott 373 posi 4/7 drop. 2000 s10 zr2 little blue truck that never gets stuck. '74 heald super bronc vt8. tecumseh powered moon rover. |
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#10 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,650
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Re: Help Id rear differential Eaton HO52 or?
Yup -- an original Eaton in a 1-ton will be an HO72.
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#11 |
Registered User
![]() Join Date: Apr 2015
Location: Ririe, Idaho
Posts: 136
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Re: Help Id rear differential Eaton HO52 or?
Correct and here is a handy tech article with part numbers for gaskets and seals etc.
http://www.stovebolt.com/techtips/ax...Ton%20Upgrade/
__________________
67 c30 Cab and Chassis (ex motorhome truck) 68 c10 LWB 70 c30 Cab and Chassis 133" converted to Longhorn 72 K10 LWB Rust Bucket Hunting Truck |
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#12 |
Registered User
Join Date: Jul 2011
Location: strausstown pa
Posts: 3,394
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Re: Help Id rear differential Eaton HO52 or?
Thanks for the info guys. I know this truck will need brake work but not sure where the problem is.
are the brake parts hard too find? I really didn't look around yet since I'm not sure what's wrong with it.
__________________
81 camaro 355 4/spd 342 posi my first love ![]() 67 swb step 454/4spd ott 373 posi 4/7 drop. 2000 s10 zr2 little blue truck that never gets stuck. '74 heald super bronc vt8. tecumseh powered moon rover. |
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#13 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,858
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Re: Help Id rear differential Eaton HO52 or?
They'll be extremely obsolete once no more good used parts are available... if it ever needs any. As it is now, the driveshaft turns the pinion, the pinion turns the ring gear, the ring gear turns the axle shafts, and the wheels roll on down the road just the same as a brand new truck or the one that comes out next year.
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#14 |
Registered User
![]() Join Date: Nov 2006
Location: KINGSPORT,TN.
Posts: 3,035
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Re: Help Id rear differential Eaton HO52 or?
I,d clean out the diff real well and install syn lube. it will help it live aloot longer.
__________________
I BELIEVE IN JOHN 3:16 |
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#15 |
Registered User
Join Date: Dec 2009
Location: bisbee, arizona
Posts: 1,529
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Re: Help Id rear differential Eaton HO52 or?
its an HO 52. certainly NOT obsolete. parts support for the generic stuf is still available, the rest NOS through ebay or used... just about anywere. A good rear end. Do a search here or better yet over in the driveleline section to learn more and interesting things about this near bullet proof rear. And also lots of info onother 4x4 specific forums.
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#16 |
Senior Member
![]() Join Date: Nov 2014
Location: Colorado
Posts: 3,225
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Re: Help Id rear differential Eaton HO52 or?
Thanks for the help guys. I posted an ad for it in the parts for sale area if one of you or someone you know is looking for one.
__________________
07' Extcab Silverado Z71 Silver Birch, 5.3L HO 71' Cheyenne C10 Hugger Orange on Saddle SWB Besides these two, too Many to count |
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#17 |
Senior Member
![]() Join Date: Nov 2014
Location: Colorado
Posts: 3,225
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Re: Help Id rear differential Eaton HO52 or?
Sold the center section/3rd member to a board member here. Someone can have the rest of it for FREE! Come get it! The housing, axles, brakes, brake cables, etc. FREE! Everything but the carrier, ring and pinion for FREE! Did I mention FREE!?
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