What is this rearend? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Digger51 · 03-07-2004, 02:02 PM

This is in a 1970 GMC. The only thing I know about it are that it has limited slip and a pretty high gear ratio (3500 rpm @60mph).

*racedvl* · 03-07-2004, 02:12 PM

Dana 44?

*Robo_bot* · 03-07-2004, 02:15 PM

i think it might be a dana 60

Digger51 · 03-07-2004, 02:38 PM

I've been told it was a 60 but not by someone who is an expert. I am hoping for a definitive answer.

Blazer1970 · 03-07-2004, 04:29 PM

It is a Dana 60, I can see the "60" in the casting web in that picture. Is it a 6 lug semi-floater? If so, is it a big block truck?

Mike C · 03-07-2004, 04:42 PM

And it is a coil spring 60 for the naysayers who haven't seen one.

Digger51 · 03-07-2004, 10:45 PM

It is a 6 lug, and yes it is a colil spring truck. I don't know what a "semi-floater" is. No big block - 350.

lukecp · 03-07-2004, 10:53 PM

Quote:

Originally posted by Mike C
And it is a coil spring 60 for the naysayers who haven't seen one.

I didn't think they existed either until i saw one today

If it is a full-floating rear axle it will have a hub assembly that pokes out past the lugnuts on the wheels, with about half a dozen bolts on it. The semifloating rear axles do not have this.

MandarinSixSeven · 03-08-2004, 12:00 AM

Quote:

Originally posted by Blazer1970
It is a Dana 60, I can see the "60" in the casting web in that picture. Is it a 6 lug semi-floater? If so, is it a big block truck?

Thats waht I was going to say

Blazer1970 · 03-08-2004, 12:31 PM

Quote:

Originally posted by yellow72custom

I didn't think they existed either until i saw one today

If it is a full-floating rear axle it will have a hub assembly that pokes out past the lugnuts on the wheels, with about half a dozen bolts on it. The semifloating rear axles do not have this.

If it is a 6 lug, it is a semi-floater. There was never any 6 lug full-floater rear axle made, besides maybe some Japanese 1 tons (Toyota, Nissan).

03-07-2004, 02:02 PM	#1
Digger51 Registered User Join Date: Apr 2000 Location: Littleton, CO Posts: 51	What is this rearend? This is in a 1970 GMC. The only thing I know about it are that it has limited slip and a pretty high gear ratio (3500 rpm @60mph). Attached Images __________________ 70 GMC, SWB, 2WD, low

03-07-2004, 02:38 PM	#4
Digger51 Registered User Join Date: Apr 2000 Location: Littleton, CO Posts: 51	I've been told it was a 60 but not by someone who is an expert. I am hoping for a definitive answer. __________________ 70 GMC, SWB, 2WD, low

03-07-2004, 04:29 PM	#5
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	It is a Dana 60, I can see the "60" in the casting web in that picture. Is it a 6 lug semi-floater? If so, is it a big block truck? __________________ Tim

03-07-2004, 04:42 PM	#6
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,715	And it is a coil spring 60 for the naysayers who haven't seen one. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

03-07-2004, 10:45 PM	#7
Digger51 Registered User Join Date: Apr 2000 Location: Littleton, CO Posts: 51	It is a 6 lug, and yes it is a colil spring truck. I don't know what a "semi-floater" is. No big block - 350. __________________ 70 GMC, SWB, 2WD, low

03-07-2004, 02:12 PM	#2
racedvl Account Suspended Join Date: Jan 2000 Location: Woodstock, IL Posts: 7,020	Dana 44?

03-07-2004, 02:15 PM	#3
Robo_bot Account Suspended Join Date: Feb 2004 Location: Kelowna BC Canada Posts: 481	i think it might be a dana 60



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