The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 11-16-2013, 06:02 PM   #1
62k10&84k20burb
Registered User
 
62k10&84k20burb's Avatar
 
Join Date: Apr 2013
Location: owls head, new york
Posts: 81
Eaton ho52 or ho72?

Is there a way to distinguish between a 52 & 72? a buddy of mine has a 67 c20 dually originally had a 292 & 4spd. I know it's an eaton, just wondering which it is. What is the differences between them?

Last edited by 62k10&84k20burb; 11-16-2013 at 06:07 PM. Reason: Effin auto correct
62k10&84k20burb is offline   Reply With Quote
Old 11-16-2013, 07:10 PM   #2
Stocker
20' Daredevil (Ret)
 
Stocker's Avatar
 
Join Date: May 2003
Location: Jefferson State
Posts: 13,695
Re: Eaton ho52 or ho72?

Pretty sure C20 (as well as K20) came with HO52 only. HO72 was only used on C30 trucks, and had larger brakes.

Also, if a 67-72 pickup had factory rear duals, it was a 30 series and if it had an Eaton, it was an HO72.

Then there's the load bolt. All HO72s had it, some HO52s had it but some did not. An Eaton with no load bolt is definitely an HO52.

That's all I know without searching. There may be differences in axle size, bearing size, and spline count.
__________________
- Mike -

1972 K20 LWB 350/350/205

RIP El Jay
Stocker is offline   Reply With Quote
Old 11-16-2013, 09:28 PM   #3
62k10&84k20burb
Registered User
 
62k10&84k20burb's Avatar
 
Join Date: Apr 2013
Location: owls head, new york
Posts: 81
Re: Eaton ho52 or ho72?

It is a 20 series. Factory dual. And where the hell do I parts???
62k10&84k20burb is offline   Reply With Quote
Old 11-16-2013, 09:58 PM   #4
LONGHAIR
just can't cover up my redneck
 
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
Re: Eaton ho52 or ho72?

That is the problem with Eatons, the parts are scarce. Bearing and seals may not be so bad, but brake parts and gears are tough.
__________________
You can review the site's rules here.



Quote:
Originally Posted by Longhorn Man View Post
As for reading directions...
The directions are nothing but another man's opinion.
Learn from the mistakes of others, you won't live long enough to make them all yourself...

Bad planning on your part does not necessarily constitute an instant emergency on my part....

The great thing about being a pessimist is that you are either pleasantly surprised or right.
LONGHAIR is offline   Reply With Quote
Old 11-17-2013, 09:20 AM   #5
62k10&84k20burb
Registered User
 
62k10&84k20burb's Avatar
 
Join Date: Apr 2013
Location: owls head, new york
Posts: 81
Re: Eaton ho52 or ho72?

Already found breaks... He wants to regear is. 4.56s and a 4spd... No mileage. And where is this load bolt y'all speak of? And I lied, don't think it's factory dually. Nothing mention in the factory tag. The original owner bought it from the dealership dually. They must have bolted them on or something
62k10&84k20burb is offline   Reply With Quote
Old 11-17-2013, 11:02 AM   #6
Stocker
20' Daredevil (Ret)
 
Stocker's Avatar
 
Join Date: May 2003
Location: Jefferson State
Posts: 13,695
Re: Eaton ho52 or ho72?

Quote:
Originally Posted by 62k10&84k20burb View Post
And where is this load bolt y'all speak of?
Here ya go.

__________________
- Mike -

1972 K20 LWB 350/350/205

RIP El Jay

Last edited by Stocker; 11-17-2013 at 11:10 AM. Reason: found a better pic
Stocker is offline   Reply With Quote
Old 11-17-2013, 06:05 PM   #7
62k10&84k20burb
Registered User
 
62k10&84k20burb's Avatar
 
Join Date: Apr 2013
Location: owls head, new york
Posts: 81
Re: Eaton ho52 or ho72?

Thanks bro
62k10&84k20burb is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 11:35 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com