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#1 |
Registered User
![]() Join Date: Feb 2003
Location: Staunton, Virginia
Posts: 554
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Eaton Rear End ID Question
Hi Guys, I just bought a 71 3/4 ton 4x4 with 350/sm465/np205. Checked the F & R ends today and wanted to ask if anyone knows the factory codes for axles. from what I can see, the code on the Eaton is TJH and followed by G 1172. From reading some other posts,I think the TJH is correct for 71 but have no idea what the G 1172 is for. Also, what's in the red square?
Thanks for any help you have to offer, Scott |
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#2 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,645
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Re: Eaton Rear End ID Question
The item in the red square is -- if I get the terminology correct -- the pinion preload bolt. It is on all HO72s (1 ton) and some HO52s (3/4 ton).
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#3 |
Registered User
![]() Join Date: Feb 2003
Location: Staunton, Virginia
Posts: 554
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Re: Eaton Rear End ID Question
Thanks Stocker, I had read about the pinion preload bolt in other posts but wasn't sure if that's what it was. I need to get the ratio code from the axle tomorrow. I thought for sure it would be 4:56 in the Eaton. But, I looked at the Dana 44 in front and it has a 4:09 ratio tag on it. I thought the 4:09 only came with the automatics.
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#4 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,645
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Re: Eaton Rear End ID Question
What little I know about them, 4.10 seems to be a very common ratio. Easy enough for you to verify though.
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#5 |
Senior Member
![]() Join Date: Oct 2009
Location: Godley, TX
Posts: 17,964
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Re: Eaton Rear End ID Question
TJH = 71 k20 4.10:1 (Edit: also non-posi)
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#6 |
Registered User
![]() Join Date: Feb 2003
Location: Staunton, Virginia
Posts: 554
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Re: Eaton Rear End ID Question
Thanks Jocko, that helps a lot. Nice to know she's all original.
Scott |
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#7 |
newly minted old timer
Join Date: Dec 1999
Location: Hudson WI
Posts: 3,511
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Re: Eaton Rear End ID Question
![]() looks like mine. Eaton axle. Apparently there are not many parts for these, and it is a non-posi. so I will be swapping the thing out before long.
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____________________________________________ 72 c20 longhorn 65k org miles and counting! 69 k10 Suburban |
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#8 |
Carpe manana
![]() ![]() Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,390
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Re: Eaton Rear End ID Question
I'm glad I kept the HO52 in my K20 - it was rebuilt and parts weren't hard to locate. Two weeks ago a local parts store had shoes and seals for the HO72 in my C30 sitting on the shelf.
__________________
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 ![]() |
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#9 | |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,515
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Re: Eaton Rear End ID Question
Quote:
Here is a thread I posted with the charts if any one else needs to look up the codes. http://67-72chevytrucks.com/vboard/s...d.php?t=578793 LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#10 |
Registered User
![]() Join Date: Nov 2008
Location: Cleveland, OH
Posts: 591
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Re: Eaton Rear End ID Question
My father in law has an eaton with a Detroit locker set up (I believe). I was thinking about picking it up, are these hard to come by with the locker? Might use it in a project of mine.
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#11 |
Registered User
![]() Join Date: Feb 2003
Location: Staunton, Virginia
Posts: 554
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Re: Eaton Rear End ID Question
Thanks LockDoc! Do you have a chart that shows Dana 44 BOM numbers. I located the #'s from mine and can't seem to match them up with any of the #'s listed. My BOM is 603317-8. Along with 4 1 1A4 to the left of the BOM and 4 7 1A8 above the BOM. I've seen this number here in a different post but nothing in Dana material. Any help identifying would be great.
Thanks, Scott |
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#12 |
newly minted old timer
Join Date: Dec 1999
Location: Hudson WI
Posts: 3,511
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Re: Eaton Rear End ID Question
if you find a place that has the locker parts let me know. I was told they are very hard to find. id much rather pull the guts out and make it a posi than swap axels.
yeah, the brakes and such are availible. I am talking the actual gear parts are hard to find.
__________________
____________________________________________ 72 c20 longhorn 65k org miles and counting! 69 k10 Suburban |
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#13 |
Carpe manana
![]() ![]() Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,390
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Re: Eaton Rear End ID Question
No new gear parts to my knowledge either. I was fortunate to get a NoSPin locker from a member on the parts board.
__________________
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 ![]() |
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#14 | |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,515
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Re: Eaton Rear End ID Question
Quote:
No, sorry I don't. LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#15 |
Registered User
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
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Re: Eaton Rear End ID Question
I have some charts saved in my saved files but i'm at work at the moment, i'll try and get it posted here spmetime soon.
Most parts are still avalable with the exception of the ring and ponion, last i chacked tho the bearings inside the diff were really expensive, but the eatons are nearly indestructable.
__________________
Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's |
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#16 |
Registered User
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
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Re: Eaton Rear End ID Question
__________________
Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's |
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