Another What Do I Have Thread - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Bob Moore · 10-13-2006, 08:24 PM

Cleaning a rear axle assembly I picked up from a 72 1/2T Suburban. I thought it was a 12 bolt but maybe not. On the cast center section - facing forward - was GM60. Is this normal on 12 bolts? I remember somebody sold a 1/2T rear end as a Dana rear - for big bucks.

Can somebody look at their rear end and see if this common to 12bolts or not. The GM60 was on the drivers side of the center cast piece facing forward.

TIA - Bob

*trkklr77* · 10-14-2006, 01:10 AM

some earlier trucks 60-66 could have a d44 rear.

what is you lug count?

Bob Moore · 10-14-2006, 07:45 AM

The rear end is 5 lug.

OLDROCK&ROLLER · 10-14-2006, 07:49 AM

how many bolts are on the cover?

Livrat · 10-14-2006, 08:13 AM

Bob, I have 4 or 5 1972 12 bolts laying around at the shop, I will take a look today to see if the "GM60" was common or not (I never paid any attention)
I do know that there never were any dana 44's or 60's with a 5 on 5 inch bolt pattern.. plus all of the Dana's have a screw in fill plug in the cover and 12 bolts do not..

Mark

Bob Moore · 10-14-2006, 12:03 PM

Mark - Thanks. You have answered this ? because the oil fill is on the cast center portion and the cover does NOT have an oil fill. I have D60 3/4T that has the 60 cast on an angled rib - lower rightside and visible from the rear - and the oil fill in the cover.

Thanks everybody for your responses - Bob

*trkklr77* · 11-24-2006, 04:41 AM

back from the past.

i was looking at my diff the other day and low and behold, it has a gm61 cast in to it, its a 72 12bolt.

10-13-2006, 08:24 PM	#1
Bob Moore Registered User Join Date: Feb 2004 Location: Tacoma WA Posts: 1,365	Another What Do I Have Thread Cleaning a rear axle assembly I picked up from a 72 1/2T Suburban. I thought it was a 12 bolt but maybe not. On the cast center section - facing forward - was GM60. Is this normal on 12 bolts? I remember somebody sold a 1/2T rear end as a Dana rear - for big bucks. Can somebody look at their rear end and see if this common to 12bolts or not. The GM60 was on the drivers side of the center cast piece facing forward. TIA - Bob __________________ 67 C-20 LWB, tilt, speed alert, vac, 454, T400 67 C-10 SWB, factory air with more to follow

10-14-2006, 01:10 AM	#2
trkklr77 Account Suspended Join Date: Aug 2006 Location: vacaville ca, because it as far from indy as i can be Posts: 775	Re: Another What Do I Have Thread some earlier trucks 60-66 could have a d44 rear. what is you lug count?

10-14-2006, 07:45 AM	#3
Bob Moore Registered User Join Date: Feb 2004 Location: Tacoma WA Posts: 1,365	Re: Another What Do I Have Thread The rear end is 5 lug. __________________ 67 C-20 LWB, tilt, speed alert, vac, 454, T400 67 C-10 SWB, factory air with more to follow

10-14-2006, 07:49 AM	#4
OLDROCK&ROLLER Registered User Join Date: Feb 2004 Location: WHITEVILLE N.C. Posts: 494	Re: Another What Do I Have Thread how many bolts are on the cover? __________________ 72 CHEYENNE 10 SUPER 468/400/3.73

10-14-2006, 08:13 AM	#5
Livrat Member #1049 Join Date: Jun 2000 Location: Troy Montana Posts: 3,940	Re: Another What Do I Have Thread Bob, I have 4 or 5 1972 12 bolts laying around at the shop, I will take a look today to see if the "GM60" was common or not (I never paid any attention) I do know that there never were any dana 44's or 60's with a 5 on 5 inch bolt pattern.. plus all of the Dana's have a screw in fill plug in the cover and 12 bolts do not.. Mark

10-14-2006, 12:03 PM	#6
Bob Moore Registered User Join Date: Feb 2004 Location: Tacoma WA Posts: 1,365	Re: Another What Do I Have Thread Mark - Thanks. You have answered this ? because the oil fill is on the cast center portion and the cover does NOT have an oil fill. I have D60 3/4T that has the 60 cast on an angled rib - lower rightside and visible from the rear - and the oil fill in the cover. Thanks everybody for your responses - Bob __________________ 67 C-20 LWB, tilt, speed alert, vac, 454, T400 67 C-10 SWB, factory air with more to follow

11-24-2006, 04:41 AM	#7
trkklr77 Account Suspended Join Date: Aug 2006 Location: vacaville ca, because it as far from indy as i can be Posts: 775	Re: Another What Do I Have Thread back from the past. i was looking at my diff the other day and low and behold, it has a gm61 cast in to it, its a 72 12bolt.

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