need help to id this rearend, - The 1947 - Present Chevrolet & GMC Truck Message Board Network

helldiablo · 05-08-2011, 11:16 PM

my brother got this rearend out of a 71' one ton, with leaf springs,, and hes not sure what it is, here are pics of numbers and backing plate, it has 10 bolts for cover and 4.10 gears according to tag,, i can have him get more if needed.. thank you all ahead of time..

Longhorn Man · 05-08-2011, 11:59 PM

that is the corperate rear, with an Eaton HO72 diff.

helldiablo · 05-09-2011, 12:30 AM

I knew you would come thru longhorn man. Thank you! Is there anything special my brother should know about it? Besides the fact that it weighs 500 thousand pounds... lol!

Blazer1970 · 05-09-2011, 06:03 AM

Looks like a Dana 60 to me. Look at the picture of the housing.

Jessechop · 05-09-2011, 06:13 AM

Thats a Dana 60. The Eaton makes that look tiny

**special-K** · 05-09-2011, 06:37 AM

My guess is a Dana70. It looks bigger and more stout. Can you show a picture of the whole axle from behind?

Beelzeburb · 05-09-2011, 02:22 PM

See that "09" in the fourth picture? Flip that picture upside down and it will read "60".

Here's a picture of the Dana 60 I got from a '71 - '72 3/4 ton 2wd w/ rear leaf springs:

Yours looks exactly like mine. I'm betting it wasn't a one-ton but a 3/4 ton truck you pulled it from. Do a quick Google search and you'll see that the HO72 looks nothing like what you've got.

P.S. the numbers you really want for exact identification of a Dana are on the axle tubes. There are a few web sites out there that will help you interpret the BOM (bill of material) number.

Longhorn Man · 05-09-2011, 11:47 PM

the photos weren't there when I responded... or my computer hadn't loaded them onto my screen yet.
That isn't the original rear in a C/30, the eaton was the only one avalible.
The Danas in these rigs were pretty lame and shattered axle shafts pretty easily.

helldiablo · 05-10-2011, 06:03 PM

i can get a pic of the whole thing, i am not exactly sure what he pulled it from he said the vin tag said 71'.. he lives in wyoming... i live in california.. so all i can go by is pics.. he is not sure what model it is sohe can get parts to get for it.. ill have him send me more so it might help...

helldiablo · 05-12-2011, 09:47 PM

here is a cover pic he just sent me.... i am sure it is a dana 60.. thank you for all your help..

05-08-2011, 11:16 PM	#1
helldiablo Registered User Join Date: Nov 2010 Location: northern california Posts: 105	need help to id this rearend, my brother got this rearend out of a 71' one ton, with leaf springs,, and hes not sure what it is, here are pics of numbers and backing plate, it has 10 bolts for cover and 4.10 gears according to tag,, i can have him get more if needed.. thank you all ahead of time.. Attached Images __________________ *The two most important lessons to wrenchin'-1.The only time you have too much fuel is when you're on fire-2. If something hasn't broken, it's about to--*

05-08-2011, 11:59 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: need help to id this rearend, that is the corperate rear, with an Eaton HO72 diff.

05-09-2011, 12:30 AM	#3
helldiablo Registered User Join Date: Nov 2010 Location: northern california Posts: 105	Re: need help to id this rearend, I knew you would come thru longhorn man. Thank you! Is there anything special my brother should know about it? Besides the fact that it weighs 500 thousand pounds... lol! __________________ *The two most important lessons to wrenchin'-1.The only time you have too much fuel is when you're on fire-2. If something hasn't broken, it's about to--*

05-09-2011, 06:03 AM	#4
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,507	Re: need help to id this rearend, Looks like a Dana 60 to me. Look at the picture of the housing. __________________ Tim

05-09-2011, 06:13 AM	#5
Jessechop Registered User Join Date: Sep 2003 Location: maine Posts: 191	Re: need help to id this rearend, Thats a Dana 60. The Eaton makes that look tiny

05-09-2011, 06:37 AM	#6
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: need help to id this rearend, My guess is a Dana70. It looks bigger and more stout. Can you show a picture of the whole axle from behind? __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

05-09-2011, 02:22 PM	#7
Beelzeburb Devil's in the Details Join Date: Sep 2008 Location: Southern Utah Posts: 353	Re: need help to id this rearend, See that "09" in the fourth picture? Flip that picture upside down and it will read "60". Here's a picture of the Dana 60 I got from a '71 - '72 3/4 ton 2wd w/ rear leaf springs: Yours looks exactly like mine. I'm betting it wasn't a one-ton but a 3/4 ton truck you pulled it from. Do a quick Google search and you'll see that the HO72 looks nothing like what you've got. P.S. the numbers you really want for exact identification of a Dana are on the axle tubes. There are a few web sites out there that will help you interpret the BOM (bill of material) number. __________________ '70 K10 Suburban - TBI 454, 4L80E, NP241C, Dana 60 & 44 - The 10+ Year Project Thread Datsun 240Z, 510 2 door and an old Honda motorcycle Last edited by Beelzeburb; 05-09-2011 at 06:36 PM.

05-09-2011, 11:47 PM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: need help to id this rearend, the photos weren't there when I responded... or my computer hadn't loaded them onto my screen yet. That isn't the original rear in a C/30, the eaton was the only one avalible. The Danas in these rigs were pretty lame and shattered axle shafts pretty easily.

05-10-2011, 06:03 PM	#9
helldiablo Registered User Join Date: Nov 2010 Location: northern california Posts: 105	Re: need help to id this rearend, i can get a pic of the whole thing, i am not exactly sure what he pulled it from he said the vin tag said 71'.. he lives in wyoming... i live in california.. so all i can go by is pics.. he is not sure what model it is sohe can get parts to get for it.. ill have him send me more so it might help... __________________ *The two most important lessons to wrenchin'-1.The only time you have too much fuel is when you're on fire-2. If something hasn't broken, it's about to--*

05-12-2011, 09:47 PM	#10
helldiablo Registered User Join Date: Nov 2010 Location: northern california Posts: 105	Re: need help to id this rearend, here is a cover pic he just sent me.... i am sure it is a dana 60.. thank you for all your help.. Attached Images __________________ *The two most important lessons to wrenchin'-1.The only time you have too much fuel is when you're on fire-2. If something hasn't broken, it's about to--*



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