how do i find out what rear end i have - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*rage'nrat638* · 07-31-2005, 05:53 PM

71 chevy 3/4 ton.......just bought to part out ......how do i do this???????

thanks for the help.......

Longhorn Man · 07-31-2005, 06:21 PM

What shape is the rear cover?
If it is round, like a salad bowl, it's an HO52. A corp rear with an Eaton diff in it.
If it looks like a dana...it's a dana.

krue · 07-31-2005, 07:29 PM

Look in the mirror.

SK1970 · 08-01-2005, 12:53 AM

get the id# off the axle tube it should be on the bottom of the tube and post the number and I will tell you what you have.

shifty · 08-01-2005, 01:06 AM

Quote:

Originally Posted by rage'nrat638

how do i find out what rear end i have

Bend over, spread your cheeks and look in the mirror. LOL

Alaskan · 08-01-2005, 02:05 AM

My 71 C/20 has an HO72 stump puller.

Longhorn Man · 08-01-2005, 05:34 AM

Alaskan, why do you say you have the HO72? 3/4 ton trucks only got the HO52.

**JIMs70GMC** · 08-01-2005, 05:35 AM

I have a dana 60 in my garage that came out of a 71 C20 w/ leaf springs, was 4.10 ratio. Does it look like this in shape?

96blazr · 08-01-2005, 01:54 PM

I was wondering about this too. I just crawed under there Sunday and wrote down the only info I could find.
It says: "GM55"
There is a series of numbers on the axle tube, but it only says:
Top row:"1 2 3 4 5"
Under that it says: "6 7 8 9 0"

I tried looking everywhere on the Pumpkin and all around. Did I not look close enough?

larry may · 08-01-2005, 08:48 PM

There is a number on the right side axel tube. It is stamped on the front side of the tube near the center section . I am needing same information you are after. Posted earlier today. Sure could use some help here.

byrd · 08-01-2005, 09:10 PM

Quote:

Originally Posted by Longhorn Man

What shape is the rear cover?
If it is round, like a salad bowl, it's an HO52. A corp rear with an Eaton diff in it.
If it looks like a dana...it's a dana.

Mine is round like you say,and is a 12 bolt does that mean it is the corp rear end? Randy

Longhorn Man · 08-01-2005, 09:23 PM

Quote:

Originally Posted by byrd

Mine is round like you say,and is a 12 bolt does that mean it is the corp rear end? Randy

Yup. If it is 3/4 ton or one ton, and has the full floating axles (pop the hubcaps off, and see if it has a huge hub pokin out of the center of the wheel with 8 or so bolts) then yes, it'll be an HO 52 or HO72 (one ton) eaton/corp rear end.

**JIMs70GMC** · 08-01-2005, 09:37 PM

The 12 bolts hold the ring gear and carrier halves together, there are 10 bolts holding the cover on and 10 bolts holding the third member on.

drink2mny · 08-01-2005, 11:15 PM

Is it one of these??

top is the eaton.

Dana 60 I.D.

drink2mny · 08-01-2005, 11:16 PM

Dam thats a big rear end...

thecatseye66 · 08-02-2005, 01:40 AM

Quote:

Originally Posted by drink2mny

Dam thats a big rear end...

You sure got a big rear end, Jon.

drink2mny · 08-02-2005, 01:42 AM

Quote:

Originally Posted by thecatseye66

You sure got a big rear end, Jon.

I knew you were checking me out at the swapmeet... Why don't you call like you use to???

Sorry Rat, had to respond....

SonomaComa · 03-28-2016, 02:29 AM

Quote:

Originally Posted by JIMs70GMC

I have a dana 60 in my garage that came out of a 71 C20 w/ leaf springs, was 4.10 ratio. Does it look like this in shape?

What rear end is that in the picture?
I have the same rear end in my 1970 GMC C20. 8-Lug, 1/2" Studs. On the top right hand side above the Dif cover it has the same code stamped upside down of C-30255, and on the bottom side of the Dif cover it has the number 60

SS Tim · 03-28-2016, 02:39 AM

Dana 60

SonomaComa · 03-28-2016, 02:49 AM

Quote:

Originally Posted by SS Tim

Dana 60

Right on, thank you. My truck is a 2WD and on the Front it has Spindles from a 1972 Chevy for the front disc brake conversion. But those Wheel Studs are 9/16" and on the Rear Hubs they are 1/2" Wheel Studs. Hopefully I'll be able to purchase new rear hubs with 9/16" Studs.
Or will I have to have them drilled out....?

07-31-2005, 05:53 PM	#1
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	how do i find out what rear end i have 71 chevy 3/4 ton.......just bought to part out ......how do i do this??????? thanks for the help.......

07-31-2005, 07:29 PM	#3
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	Look in the mirror. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

08-01-2005, 02:05 AM	#6
Alaskan Truck'n the alcan Join Date: Jan 2001 Location: Houston, AK Posts: 149	Ho72 My 71 C/20 has an HO72 stump puller. __________________ 68 GMC 4x4 71 C20 Custom Deluxe 83 1/2 ton conversion van Last edited by Alaskan; 08-01-2005 at 02:05 AM.

08-01-2005, 05:35 AM	#8
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	I have a dana 60 in my garage that came out of a 71 C20 w/ leaf springs, was 4.10 ratio. Does it look like this in shape? __________________ 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

08-01-2005, 01:54 PM	#9
96blazr Registered User Join Date: Aug 2003 Location: VA Posts: 740	I was wondering about this too. I just crawed under there Sunday and wrote down the only info I could find. It says: "GM55" There is a series of numbers on the axle tube, but it only says: Top row:"1 2 3 4 5" Under that it says: "6 7 8 9 0" I tried looking everywhere on the Pumpkin and all around. Did I not look close enough? __________________ 1968 SWB. GMPP 350/350 Turbo Trans, Edelbrock Performer & Carb. Hedman Hedders, Hooker Aerochambers Mufflers. Tuff Stuff Alternators. Remember, no matter where you go, There you are. Gary

07-31-2005, 06:21 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	What shape is the rear cover? If it is round, like a salad bowl, it's an HO52. A corp rear with an Eaton diff in it. If it looks like a dana...it's a dana.

08-01-2005, 12:53 AM	#4
SK1970 Active Member Join Date: Sep 2003 Location: ALABAMA Posts: 110	get the id# off the axle tube it should be on the bottom of the tube and post the number and I will tell you what you have.

08-01-2005, 05:34 AM	#7
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Alaskan, why do you say you have the HO72? 3/4 ton trucks only got the HO52.

08-01-2005, 08:48 PM	#10
larry may Senior Member Join Date: Jul 2005 Location: MISSOURI Posts: 3,256	There is a number on the right side axel tube. It is stamped on the front side of the tube near the center section . I am needing same information you are after. Posted earlier today. Sure could use some help here.

08-01-2005, 09:37 PM	#13
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	The 12 bolts hold the ring gear and carrier halves together, there are 10 bolts holding the cover on and 10 bolts holding the third member on. __________________ 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

08-01-2005, 11:15 PM	#14
drink2mny Registered User Join Date: Jun 2003 Location: spokane wa Posts: 2,189	Is it one of these?? top is the eaton. Dana 60 I.D. Attached Images __________________ Support The Board

08-01-2005, 11:16 PM	#15
drink2mny Registered User Join Date: Jun 2003 Location: spokane wa Posts: 2,189	Dam thats a big rear end... __________________ Support The Board

03-28-2016, 02:39 AM	#19
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,503	Re: how do i find out what rear end i have Dana 60 __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban



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