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#1 |
Registered User
![]() Join Date: Oct 2006
Location: Salem, Oregon
Posts: 250
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Can someone ID this Rearend?
This is from a 1972 Chevy 3/4 ton Longhorn.
Thanks! |
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#2 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Can someone ID this Rearend?
that is the eaton diff... corporate rear. HO 52
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#3 |
Registered User
![]() Join Date: Oct 2006
Location: Salem, Oregon
Posts: 250
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Re: Can someone ID this Rearend?
Thanks Longhorn Man!
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#4 |
Zappaphile!
Join Date: Apr 2007
Location: Los Banos, California
Posts: 228
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Re: Can someone ID this Rearend?
have fun finding parts/shoes/drums etc..
Thats the boat I am in with mine now.. hoping to get it rebuilt this summer if I can scrape up the cash..
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1969 C20 LWB Camper Special - The Beater.. 1998 Cheyenne V6 - 4/6 Drop - For The Son |
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#5 |
Registered User
![]() Join Date: Nov 2006
Location: KINGSPORT,TN.
Posts: 3,035
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Re: Can someone ID this Rearend?
i got some parts for the ho52 rear & ho 72 srw rear.
bob
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I BELIEVE IN JOHN 3:16 Last edited by BCOWANWHEELS; 06-22-2007 at 11:37 PM. |
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#6 |
Registered User
![]() Join Date: Oct 2006
Location: Salem, Oregon
Posts: 250
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Re: Can someone ID this Rearend?
I'm actually selling this 1 ton frame and it comes with this rearend.
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#7 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Can someone ID this Rearend?
woah... if it's a one ton, it's the HO72... same parts, except for the brakes.
I just assummed... ![]() you know what they say about assuming. Last edited by Longhorn Man; 06-22-2007 at 11:26 PM. |
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#8 |
Registered User
![]() Join Date: Oct 2006
Location: Salem, Oregon
Posts: 250
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Re: Can someone ID this Rearend?
It is a Longhorn so it have to be a 1 ton, right?
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#9 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Can someone ID this Rearend?
nope.
The C/20 longhorn would have a one ton frame... but everything else would be C/20 stuff. The C/30 longhorn would have the one ton parts under it. |
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#10 |
Registered User
Join Date: Dec 2006
Location: POWNAL VERMONT
Posts: 343
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Re: Can someone ID this Rearend?
same rear as my 72 gmc the truck was an old town truck and it was ordered as a 3/4 ton heavyduty so one ton axles were added at the factory i get my parts through a carquest parts dealer if there is one near you i'll try and find my parts numbers for the pieces you need as i got it all new for mine HEAVYDUTY 3/4 TONS WERE FITTED WITH 1 TON OPTIONS
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1972 c-20 chevy 500 caddy/4.10posi / 1972 3/4 ton gmc 350 4x4/4.10posi front&rear ![]() ![]() ![]() Last edited by 1bad chevy; 06-23-2007 at 07:47 AM. |
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#11 |
Registered User
![]() Join Date: Oct 2006
Location: Salem, Oregon
Posts: 250
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Re: Can someone ID this Rearend?
Longhorn Man it is a C/20 Longhorn.
I also have a 68 Longhorn with the same rearend (H072), so perhaps I should not sell this rearend because I will eventually need drums and brake parts for my 68 Longhorn, and since these parts are hard to find. Do all Longhorns have the HO52 and HO72 rearends? Thank you! Last edited by OregonC20; 06-23-2007 at 02:56 PM. |
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#12 | ||
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Can someone ID this Rearend?
Quote:
Does it have leafs? Does it have the one ton brakes? Like I said, the 52 and 72 are the SAME thing... however, there were no coil spring one tons, so you can't get an HO72 for a coil truck unless you make it yourself. What one ton parts was your truck equipped with? __________________________________________________________________ Quote:
Not all longhorns had these Eatons, there were planty that had the Dana. |
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#13 |
Senior Member
![]() Join Date: Mar 2003
Location: Colfax-California
Posts: 8,554
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Re: Can someone ID this Rearend?
Mine had the dana 60 with 3.54s and a power-loc
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#14 |
Registered User
Join Date: Feb 2004
Location: Tacoma WA
Posts: 1,365
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Re: Can someone ID this Rearend?
What is the diameter of the HO72 brake shoes and the width? Also same info for the HO52. Was there just one size for the 72? How about for the HO52?
I think this is one of the most confusing topics on the board - at least for me. Thanks for this info and for anymore that may pop up - hint to Andy and the rest of you knowledgable members - Bob
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67 C-20 LWB, tilt, speed alert, vac, 454, T400 67 C-10 SWB, factory air with more to follow |
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#15 | |
Registered User
Join Date: Dec 2006
Location: POWNAL VERMONT
Posts: 343
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Re: Can someone ID this Rearend?
Quote:
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1972 c-20 chevy 500 caddy/4.10posi / 1972 3/4 ton gmc 350 4x4/4.10posi front&rear ![]() ![]() ![]() |
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#16 |
Registered User
Join Date: Jun 2002
Location: central pa
Posts: 1,525
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Re: Can someone ID this Rearend?
I will disagree with Andy on this. The H052 and H072 are the same housing but the drums,brakes and bearings are different between the differentials as a whole.
The 3/4 ton trucks came with either the H052 rear(5200lb cap) or the Dana 60 rear(5500lb cap). Look on the metal plate on the door and the AS BUILT will tell you the max rear axle cap which should tell you the rear end. The later trucks came with Dana 60's as a 1 ton SRW rear. And later dana 60's came as front ends on the K30 series. All 1 ton longhorns came with the H072 axle(7200lb cap). When you got into DRW 157" you could have a H072 or a H110(11000lb cap). So no wonder there is confusion on the rears.
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72 longhorn c30 502BB/th400/fact air/4.11rear/ custom camper 72 bug(the better half's) under reconstruction 2009 HHR aqua blue 71 GMC k20 350/sm465 2009 Chevy hd3500 6.6 Victory Red crew cab dually Dave & Jeanne |
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#17 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Can someone ID this Rearend?
ok, i forgot bearings... good call.
However, the 2 C/20 longhorns I had (one '70 CST/20 Longhorn, and a '72 Cheyenne/20 Longorn for parts) both had the small brakes out back... the52. It'sa hige difference between the massive drums out back in my C/30 I have now. The photo that bad chevy had (which seems to be missing now) does show the one ton brakes, so this is confusing now, however, I wonder if his had been swapped out at one point being that the truck had been stripped and reasembles at least once before |
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#18 |
Registered User
Join Date: Jun 2004
Location: Beeville, Texas
Posts: 1,943
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Re: Can someone ID this Rearend?
There were two sizes of brakes for C/20's, the standard size was 11 5/32" by 2 1/2", and the Heavy-Duty brake size was 11 5/32" by 2 3/4". The C/30's had 13" by 2 1/2" if I remember right. The pinion bearings on the HO52 and HO72 are the same and are the roller type, but the side bearings for the hubs and all brake parts are different.
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RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck |
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