Got a HO72 Detroit Locked rear end - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72C203503ONTHETREE · 09-24-2004, 12:33 AM

Won it on e bay for $50, plus shipping from Minnesota. I am just getting the center section and posibly the axles if it doesnt cost too much. The rears housing had been converted to disc brakes but they had been welded on to the housing. Plus the guy didnt want to ship the whole thing. Anyway, I have pictures of it but cant post them. If anyone can do it for me I can e mail them to whoever and they can post it if anyone wants to see it.

1969 GMC · 09-24-2004, 02:06 AM

Here is a pic of mine:

EDIT: ok that didnt work for some reason, but you can still see the pic of mine in my photo link, click on "H052".

Robert1970C20rstbukt · 09-24-2004, 02:11 AM

Is it a 1/2 ton rear end? Just asking 'cause I never heard of rear discs for a 3/4-1 ton truck before.

I just found out mine is a No-Spin positrac rear end, I didn't even know it till I checked the axle code. No wonder it spins both tires!

Longhorn Man · 09-24-2004, 02:43 AM

An HO72 is a one ton rear.

72C203503ONTHETREE · 09-24-2004, 04:41 AM

The discs arent original, they are newer four wheel drive hubs and rotors with the brackets welded onto the axle housing, thats what the seller told me at least.

1969GMC-That looks a lot like the one I am getting, he didnt get a close enough picture at that angle, but there is four pinions and a opening like you have circled in your picture. Otherwise it looks exactly like yours excpet it looks much cleaner.

The main difference from what I can tell between the 52 and 72 is that the 72 uses ball bearings for pinion bearings. I am assuming the 11,000 rated axle is the 72 and the 5,000 and 7,000 pound axles were the 52, from what the factory manuals have in them. I am hoping that the whole center section will swap over to my 52 housing.

1969 GMC · 09-24-2004, 05:28 AM

the H052 was rated at 5200# and the H072 at 7200#, and the H110 was rated at 11000#, iirc. the 110 has the diff cover welded on from the factory, and was a bigger axle overall. the H072 did have the ball bearings for the pinion, but otherwise the axles are the same (except for brakes). the circled part in my pic is where you can see the No-Spin (Detroit), as I didn't know how to ID one when I bought the diff, but now I know...if you see metal, you're good, if you see the spiders, then you're open

EDIT: BTW, good score! I got my whole axle for $100, but had to drive to W.PA to get it, and its a 2wd axle so it will need to be modified to run in a 4x4. However, now I am thinking about selling it.

**JIMs70GMC** · 09-24-2004, 03:17 PM

Does it fit inside the H072 open carrier? Or is it a replacement carrier. I only ask because I'm not familiar with it. But would like to find one for my H052 in my 71.

Also Blackbird's in Washinton, sells rear disc set-ups for a lot of 3/4 and 1 ton applications.

**COBALT** · 09-24-2004, 05:40 PM

It's a replacement carrier. I have a detroit locker in my HO52. You'll love it. Take this opportunity to get a set of 3.90s while you're at it, or stay with the 4.10s.....

Chevy67Tk · 09-24-2004, 09:11 PM

Adam 1969 GMC if your serious about selling your HO52 for what you have in it, I have a good home for it back in western PA.

72C203503ONTHETREE my apologies for temporally hijacking your thread

da-burb · 09-24-2004, 09:46 PM

GREAT DEAL! wish I had seen it since it is just a drive across town.

Chris H · 09-24-2004, 09:51 PM

I cant believe that thing ran twice on ebay and I didn't see it either time!!

It would have been mine had I seen it!
(I might have even got there faster than Da-Burb?)

Way good score, I paid more than that for just a center chunk with a 4.10 locker.

If you decide not to pay the shipping on that, let me know. I would be glad to buy it.

Chris

72C203503ONTHETREE · 09-24-2004, 10:10 PM

All I am getting is the center section and maybe the axle shafts. Can't afford to ship a whole rear axle and its been welded on anyway. I am just going to swap out the center sections and keep my open center section as a spare. I bet shipping will cost twice as much as my winning bid, actually I am the only one that bid on it. I hope its what he was advertising it as. Can anyone close by go check it out for me? lol.

72C203503ONTHETREE · 09-24-2004, 10:11 PM

Oh yeah, if I cvant use it for some reason later I will post it for sale in the classifieds at what I have in it.

da-burb · 09-24-2004, 10:39 PM

or maybe you can email the first Minnesotan that congratulated you on an excellent buy.

since I don't have one and I know ChrisH does.......

72C203503ONTHETREE · 09-26-2004, 01:31 AM

Ok, you will be the first. I think I am getting it and the axles shafts for $160 shipped. He says its a locker for sure, I told him what to look for and he said it was what I said it should be. I will hopefully get them in the next week or so.

Rod · 09-26-2004, 03:11 AM

I'd say save the shipping on the axles....why do you need them... the 3/4 ton ones you have now are the same... same spline count, same lenght, even between the HO72 and the HO52.

72C203503ONTHETREE · 09-26-2004, 08:43 PM

Its always good to have spares, especially for such oddball rears like the Eatons. Its not much more cost anyway, like $20 more.

Rod · 09-27-2004, 12:21 AM

I suppose so.. I have a spare set for myself too.

1969 GMC · 09-27-2004, 12:43 AM

sort of o/t...but has anyone here actually ever broken an Eaton axleshaft? I can't remember ever hearing of it. There is a guy on Pirate4x4 that runs 44's and a bb, and he has not broken one. just curious

72C203503ONTHETREE · 09-28-2004, 06:20 PM

Well, it appears I wopnt be getting the axles anyway. The guy decided that they will be mnore to ship and seems to be a bit confused on what he wants. He quoted two different shipping charges after I asked him how much it would be with and without axles shipped. He said he couldnt ship the axles with the center section since they would be over the max weight, which I understand. At least I will be getting the locker, hopefully.

09-24-2004, 12:33 AM	#1
72C203503ONTHETREE Registered User Join Date: Apr 2004 Location: Grant, Alabama Posts: 504	Got a HO72 Detroit Locked rear end Won it on e bay for $50, plus shipping from Minnesota. I am just getting the center section and posibly the axles if it doesnt cost too much. The rears housing had been converted to disc brakes but they had been welded on to the housing. Plus the guy didnt want to ship the whole thing. Anyway, I have pictures of it but cant post them. If anyone can do it for me I can e mail them to whoever and they can post it if anyone wants to see it. __________________ 72 Chevy C20, SOLD (Dang it.) 09 Challanger RT six speed in all black. 74 Datsun 710 wagon, all 1.8 liters of screaming Datsun power. 73 C10 long bed, 350/350 combo, nice shape.

09-24-2004, 02:06 AM	#2
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	Here is a pic of mine: EDIT: ok that didnt work for some reason, but you can still see the pic of mine in my photo link, click on "H052". __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

09-24-2004, 02:11 AM	#3
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	Is it a 1/2 ton rear end? Just asking 'cause I never heard of rear discs for a 3/4-1 ton truck before. I just found out mine is a No-Spin positrac rear end, I didn't even know it till I checked the axle code. No wonder it spins both tires! __________________ 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

09-24-2004, 04:41 AM	#5
72C203503ONTHETREE Registered User Join Date: Apr 2004 Location: Grant, Alabama Posts: 504	The discs arent original, they are newer four wheel drive hubs and rotors with the brackets welded onto the axle housing, thats what the seller told me at least. 1969GMC-That looks a lot like the one I am getting, he didnt get a close enough picture at that angle, but there is four pinions and a opening like you have circled in your picture. Otherwise it looks exactly like yours excpet it looks much cleaner. The main difference from what I can tell between the 52 and 72 is that the 72 uses ball bearings for pinion bearings. I am assuming the 11,000 rated axle is the 72 and the 5,000 and 7,000 pound axles were the 52, from what the factory manuals have in them. I am hoping that the whole center section will swap over to my 52 housing. __________________ 72 Chevy C20, SOLD (Dang it.) 09 Challanger RT six speed in all black. 74 Datsun 710 wagon, all 1.8 liters of screaming Datsun power. 73 C10 long bed, 350/350 combo, nice shape.

09-24-2004, 05:28 AM	#6
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	the H052 was rated at 5200# and the H072 at 7200#, and the H110 was rated at 11000#, iirc. the 110 has the diff cover welded on from the factory, and was a bigger axle overall. the H072 did have the ball bearings for the pinion, but otherwise the axles are the same (except for brakes). the circled part in my pic is where you can see the No-Spin (Detroit), as I didn't know how to ID one when I bought the diff, but now I know...if you see metal, you're good, if you see the spiders, then you're open EDIT: BTW, good score! I got my whole axle for $100, but had to drive to W.PA to get it, and its a 2wd axle so it will need to be modified to run in a 4x4. However, now I am thinking about selling it. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650 Last edited by 1969 GMC; 09-24-2004 at 05:36 AM.

09-24-2004, 02:43 AM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	An HO72 is a one ton rear.

09-24-2004, 03:17 PM	#7
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	Does it fit inside the H072 open carrier? Or is it a replacement carrier. I only ask because I'm not familiar with it. But would like to find one for my H052 in my 71. Also Blackbird's in Washinton, sells rear disc set-ups for a lot of 3/4 and 1 ton applications. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm Last edited by JIMs70GMC; 09-24-2004 at 03:22 PM.

09-24-2004, 05:40 PM	#8
COBALT Senior Member Join Date: Sep 2001 Location: Seattle, WA, USA Posts: 5,817	It's a replacement carrier. I have a detroit locker in my HO52. You'll love it. Take this opportunity to get a set of 3.90s while you're at it, or stay with the 4.10s..... __________________ '69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA.

09-24-2004, 09:11 PM	#9
Chevy67Tk Registered User Join Date: Mar 2003 Location: PA Posts: 349	Adam 1969 GMC if your serious about selling your HO52 for what you have in it, I have a good home for it back in western PA. 72C203503ONTHETREE my apologies for temporally hijacking your thread __________________

09-24-2004, 09:46 PM	#10
da-burb "Ochre Ogre" Join Date: Apr 2000 Location: Springfield, MN Posts: 3,558	GREAT DEAL! wish I had seen it since it is just a drive across town. __________________ Bowtie Truck Stop Inc. Mid-West GM Truck Restoration Parts Supplier Your Key Parts, Auto Metal Direct, Dynacorn, and Goodmark dealer. like us @ www.facebook.com/BowtieTruckStop 1971 C-10 Suburban (Ochre) 1971 K-10 Suburban (Ochre) 1972 C-10 Suburban (Ochre) 1972 K-20 Suburban (Yellow- that just aint right!) Springfield, Minnesota 56087

09-24-2004, 09:51 PM	#11
Chris H 72 C30 Trailer Queen Join Date: Dec 1999 Location: SE MN, USA Posts: 794	I cant believe that thing ran twice on ebay and I didn't see it either time!! It would have been mine had I seen it! (I might have even got there faster than Da-Burb?) Way good score, I paid more than that for just a center chunk with a 4.10 locker. If you decide not to pay the shipping on that, let me know. I would be glad to buy it. Chris

09-24-2004, 10:10 PM	#12
72C203503ONTHETREE Registered User Join Date: Apr 2004 Location: Grant, Alabama Posts: 504	All I am getting is the center section and maybe the axle shafts. Can't afford to ship a whole rear axle and its been welded on anyway. I am just going to swap out the center sections and keep my open center section as a spare. I bet shipping will cost twice as much as my winning bid, actually I am the only one that bid on it. I hope its what he was advertising it as. Can anyone close by go check it out for me? lol. __________________ 72 Chevy C20, SOLD (Dang it.) 09 Challanger RT six speed in all black. 74 Datsun 710 wagon, all 1.8 liters of screaming Datsun power. 73 C10 long bed, 350/350 combo, nice shape.

09-24-2004, 10:11 PM	#13
72C203503ONTHETREE Registered User Join Date: Apr 2004 Location: Grant, Alabama Posts: 504	Oh yeah, if I cvant use it for some reason later I will post it for sale in the classifieds at what I have in it. __________________ 72 Chevy C20, SOLD (Dang it.) 09 Challanger RT six speed in all black. 74 Datsun 710 wagon, all 1.8 liters of screaming Datsun power. 73 C10 long bed, 350/350 combo, nice shape.

09-24-2004, 10:39 PM	#14
da-burb "Ochre Ogre" Join Date: Apr 2000 Location: Springfield, MN Posts: 3,558	or maybe you can email the first Minnesotan that congratulated you on an excellent buy. since I don't have one and I know ChrisH does....... __________________ Bowtie Truck Stop Inc. Mid-West GM Truck Restoration Parts Supplier Your Key Parts, Auto Metal Direct, Dynacorn, and Goodmark dealer. like us @ www.facebook.com/BowtieTruckStop 1971 C-10 Suburban (Ochre) 1971 K-10 Suburban (Ochre) 1972 C-10 Suburban (Ochre) 1972 K-20 Suburban (Yellow- that just aint right!) Springfield, Minnesota 56087

09-26-2004, 01:31 AM	#15
72C203503ONTHETREE Registered User Join Date: Apr 2004 Location: Grant, Alabama Posts: 504	Ok, you will be the first. I think I am getting it and the axles shafts for $160 shipped. He says its a locker for sure, I told him what to look for and he said it was what I said it should be. I will hopefully get them in the next week or so. __________________ 72 Chevy C20, SOLD (Dang it.) 09 Challanger RT six speed in all black. 74 Datsun 710 wagon, all 1.8 liters of screaming Datsun power. 73 C10 long bed, 350/350 combo, nice shape. Last edited by 72C203503ONTHETREE; 09-26-2004 at 01:38 AM.



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09-26-2004, 03:11 AM	#16
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	I'd say save the shipping on the axles....why do you need them... the 3/4 ton ones you have now are the same... same spline count, same lenght, even between the HO72 and the HO52. __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife.

09-26-2004, 08:43 PM	#17
72C203503ONTHETREE Registered User Join Date: Apr 2004 Location: Grant, Alabama Posts: 504	Its always good to have spares, especially for such oddball rears like the Eatons. Its not much more cost anyway, like $20 more. __________________ 72 Chevy C20, SOLD (Dang it.) 09 Challanger RT six speed in all black. 74 Datsun 710 wagon, all 1.8 liters of screaming Datsun power. 73 C10 long bed, 350/350 combo, nice shape.

09-27-2004, 12:21 AM	#18
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	I suppose so.. I have a spare set for myself too. __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife.

09-27-2004, 12:43 AM	#19
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	sort of o/t...but has anyone here actually ever broken an Eaton axleshaft? I can't remember ever hearing of it. There is a guy on Pirate4x4 that runs 44's and a bb, and he has not broken one. just curious __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

09-28-2004, 06:20 PM	#20
72C203503ONTHETREE Registered User Join Date: Apr 2004 Location: Grant, Alabama Posts: 504	Well, it appears I wopnt be getting the axles anyway. The guy decided that they will be mnore to ship and seems to be a bit confused on what he wants. He quoted two different shipping charges after I asked him how much it would be with and without axles shipped. He said he couldnt ship the axles with the center section since they would be over the max weight, which I understand. At least I will be getting the locker, hopefully. __________________ 72 Chevy C20, SOLD (Dang it.) 09 Challanger RT six speed in all black. 74 Datsun 710 wagon, all 1.8 liters of screaming Datsun power. 73 C10 long bed, 350/350 combo, nice shape.

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