Rust on ring and pinion - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**DeadheadNM** · 10-04-2021, 08:41 AM

It's a myth these parts aren't available. In the last year I've been able to source all manner of gaskets, bearings, studs (71-72), drums, etc. as spares for the Eaton HO52 in my 72 K20. These parts can still be had. Rebuild it and it will last another lifetime.

Here's a good start: https://torqueking.com/category/1967...052-rear-axle/

**Johnl48** · 10-04-2021, 09:24 PM

Quote:

Originally Posted by DeadheadNM

It's a myth these parts aren't available. In the last year I've been able to source all manner of gaskets, bearings, studs (71-72), drums, etc. as spares for the Eaton HO52 in my 72 K20. These parts can still be had. Rebuild it and it will last another lifetime.

Here's a good start: https://torqueking.com/category/1967...052-rear-axle/

Gaskets and bearings are easy, ring and pinion...not so much

**DeadheadNM** · 10-04-2021, 09:56 PM

Quote:

Originally Posted by Johnl48

Gaskets and bearings are easy, ring and pinion...not so much

There’s a member here listing a rear 4.56 axle now.

71meangreenc10 · 10-04-2021, 09:39 PM

Should have the dually split tomorrow.

Smitty

Mike C · 10-04-2021, 09:44 PM

Those 3/4 ton axles would work. They are not from a military truck though… the Blazers were 6 lug and the trucks were Dana 60/FF 14 bolt. Those are most likely from a Suburban which makes a fine donor for an earlier truck. Big improvement in brakes but the 9.5” 14 bolt not as strong as the HO52. But it doesn’t sound like you need the strength.

FWIW, if those axles were close to me I’d own them for that price.

**Johnl48** · 10-04-2021, 09:51 PM

Quote:

Originally Posted by Mike C

Those 3/4 ton axles would work. They are not from a military truck though… the Blazers were 6 lug and the trucks were Dana 60/FF 14 bolt. Those are most likely from a Suburban which makes a fine donor for an earlier truck. Big improvement in brakes but the 9.5” 14 bolt not as strong as the HO52. But it doesn’t sound like you need the strength.

FWIW, if those axles were close to me I’d own them for that price.

He never a answered me when I inquired

**Ironangel** · 10-05-2021, 02:11 AM

I have an HO52/72 4:56 I'd let go for $200...Has the drums intact. SRW axle...PM me if you want it. FWIW, I'd clean up what you got, replace the bearings and run it! Unless your planning on high mileage with heavy loads that gear set will outlive you! "jus sayin"

**Johnl48** · 10-05-2021, 06:49 AM

Quote:

Originally Posted by Ironangel

I have an HO52/72 4:56 I'd let go for $200...Has the drums intact. SRW axle...PM me if you want it. FWIW, I'd clean up what you got, replace the bearings and run it! Unless your planning on high mileage with heavy loads that gear set will outlive you! "jus sayin"

Mines a 4.10

**Jiggers72-GMC** · 10-05-2021, 08:11 AM

Good luck

indymachinist · 10-06-2021, 02:37 PM

You guys saying to clean up that gear set are either blind or maybe just crazy. Maybe both? The pitting on both of them is very bad. We aren't talking a light dusting of surface rust here.

71meangreenc10 · 10-06-2021, 03:42 PM

Dually got split, has 4.57 ratio 32ring/7pinion on it. Ring and Pinion actually look good, few ring teeth with pitting but, nothing like yours.

I do have another axle, but it will be a while before I take it out from the motorhome if you are not in a hurry.

If you want anything from it let me know.

Smitty

**Johnl48** · 10-06-2021, 08:21 PM

Quote:

Originally Posted by 71meangreenc10

Dually got split, has 4.57 ratio 32ring/7pinion on it. Ring and Pinion actually look good, few ring teeth with pitting but, nothing like yours.

I do have another axle, but it will be a while before I take it out from the motorhome if you are not in a hurry.

If you want anything from it let me know.

Smitty

Oh well. We tried. Let me know when you take the other one out. Thank you

71meangreenc10 · 10-07-2021, 11:31 AM

Quote:

Originally Posted by Johnl48

Oh well. We tried. Let me know when you take the other one out. Thank you

No problem.

Smitty

**Johnl48** · 10-06-2021, 04:15 PM

This came available down the road from me. Wrong gear ratio (3.83) but I can change that. Only thing it's out of a 95..c3500
Short of changing spring and shock mounts would it fit ?

Caddylackn · 10-06-2021, 07:48 PM

Measure the backing plate to backing plate dimension and the outside rim to outside rim dimension. If the wheel offset is the same or close to yours, it looks like it would work for width.

Compare the rear end yokes where the U-joint bolts on. Make sure the overall width is close, some one tons use a larger diameter driveshaft and larger U-joints which would make bolting your stock driveshaft and U-joint to that rear end yoke more challenging. They do make conversion parts and custom driveshaft modifications. I was able to use my stock Dana 60 yoke installed onto my Dana 70U to match up to my stock driveshaft and u-joint size.

In your case if your driveshaft won't bolt on to that rear end, you might be able to make a custom driveshaft using the stock front part of driveshaft grafted on to the rear driveshaft end of the donor vehicle.

10-04-2021, 08:41 AM	#1
DeadheadNM Carpe manana Join Date: Dec 2010 Location: Eau Claire, WI Posts: 12,453	Re: Rust on ring and pinion It's a myth these parts aren't available. In the last year I've been able to source all manner of gaskets, bearings, studs (71-72), drums, etc. as spares for the Eaton HO52 in my 72 K20. These parts can still be had. Rebuild it and it will last another lifetime. Here's a good start: https://torqueking.com/category/1967...052-rear-axle/ __________________ 1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland Last edited by DeadheadNM; 10-04-2021 at 08:43 AM. Reason: added

10-04-2021, 09:39 PM	#4
71meangreenc10 Its a Truck Thing...... Join Date: Dec 2004 Location: Sierra Vista, Arizona Posts: 3,179	Re: Rust on ring and pinion Should have the dually split tomorrow. Smitty __________________ 71 C10 283/3SPD Full Resto 71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599 70 C10 Suburban Former military GSA truck. 72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378 72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110 68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head 71 C30 Wrecker 71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck 68 GMC Long Stepside. They keep following me home 69 C30 Former Motor Home, Flat Bed time 70 G20 Red-E-Kamp Conversion "I'm your Boogy Van"

10-04-2021, 09:44 PM	#5
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,731	Re: Rust on ring and pinion Those 3/4 ton axles would work. They are not from a military truck though… the Blazers were 6 lug and the trucks were Dana 60/FF 14 bolt. Those are most likely from a Suburban which makes a fine donor for an earlier truck. Big improvement in brakes but the 9.5” 14 bolt not as strong as the HO52. But it doesn’t sound like you need the strength. FWIW, if those axles were close to me I’d own them for that price. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

10-05-2021, 02:11 AM	#7
Ironangel Senior Member Join Date: Feb 2010 Location: Falls City, Nebraska "100 Miles From Nowhere" Posts: 2,219	Re: Rust on ring and pinion I have an HO52/72 4:56 I'd let go for $200...Has the drums intact. SRW axle...PM me if you want it. FWIW, I'd clean up what you got, replace the bearings and run it! Unless your planning on high mileage with heavy loads that gear set will outlive you! "jus sayin" __________________ Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" "Be American, Buy American"

10-05-2021, 08:11 AM	#9
Jiggers72-GMC Senior Member Join Date: Mar 2021 Location: up North Posts: 550	Re: Rust on ring and pinion Good luck __________________ Gerry, North Bay Ontario 1971 Chevy K10 short stepper, 518 med green & white 1972 GMC C1500 long box, dark Brown, owned since 1977 1969 GMC C2500 manual Last edited by Jiggers72-GMC; 10-07-2021 at 08:55 AM.

10-06-2021, 02:37 PM	#10
indymachinist Registered User Join Date: Jun 2015 Location: Indanapolis, IN Posts: 603	Re: Rust on ring and pinion You guys saying to clean up that gear set are either blind or maybe just crazy. Maybe both? The pitting on both of them is very bad. We aren't talking a light dusting of surface rust here. __________________ -Curt My 1968 Chevy shortbed stepside build

10-06-2021, 03:42 PM	#11
71meangreenc10 Its a Truck Thing...... Join Date: Dec 2004 Location: Sierra Vista, Arizona Posts: 3,179	Re: Rust on ring and pinion Dually got split, has 4.57 ratio 32ring/7pinion on it. Ring and Pinion actually look good, few ring teeth with pitting but, nothing like yours. I do have another axle, but it will be a while before I take it out from the motorhome if you are not in a hurry. If you want anything from it let me know. Smitty __________________ 71 C10 283/3SPD Full Resto 71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599 70 C10 Suburban Former military GSA truck. 72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378 72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110 68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head 71 C30 Wrecker 71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck 68 GMC Long Stepside. They keep following me home 69 C30 Former Motor Home, Flat Bed time 70 G20 Red-E-Kamp Conversion "I'm your Boogy Van"

10-06-2021, 04:15 PM	#14
Johnl48 Senior Member Join Date: Jun 2021 Location: West milford nj Posts: 328	Re: Rust on ring and pinion This came available down the road from me. Wrong gear ratio (3.83) but I can change that. Only thing it's out of a 95..c3500 Short of changing spring and shock mounts would it fit ?

10-06-2021, 07:48 PM	#15
Caddylackn Registered User Join Date: Jun 2016 Location: Bremerton, WA Posts: 171	Re: Rust on ring and pinion Measure the backing plate to backing plate dimension and the outside rim to outside rim dimension. If the wheel offset is the same or close to yours, it looks like it would work for width. Compare the rear end yokes where the U-joint bolts on. Make sure the overall width is close, some one tons use a larger diameter driveshaft and larger U-joints which would make bolting your stock driveshaft and U-joint to that rear end yoke more challenging. They do make conversion parts and custom driveshaft modifications. I was able to use my stock Dana 60 yoke installed onto my Dana 70U to match up to my stock driveshaft and u-joint size. In your case if your driveshaft won't bolt on to that rear end, you might be able to make a custom driveshaft using the stock front part of driveshaft grafted on to the rear driveshaft end of the donor vehicle. __________________ 1969 Custom Camper C20; Factree Air, 350/TH400/Dana 70U with C30 wheel cylinders, Disk brakes, H4 conversion, headlight relay mod, 3G 135 amp alternator. 7500 GVW

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