Hopefully some useful info - The 1947 - Present Chevrolet & GMC Truck Message Board Network

b454rat · 06-12-2004, 10:51 AM

I hope this info will be helpful to some folks, it was for me. I'm swapping axles in the 62 4wd burban that I have, and was looking for some axles that will bolt in. The front is easy, any 73 and up will bolt in. But the rear, only Gm 1 tons will bolt in, with the 40 1/2" spring pad width. Well, after some searching, measuring, and some head scratching, I found out that 79 and older Ford, HEAVY DUTY 3/4 or maybe 1 ton have the same spring pad width. These are Dana 60s rears, I don't know about the Dana 70s, the junkyard didn't have any. I measured regular 3/4 tons, and they have a wider pad width. So, if anybody is swapping axles on a 60-66 4x4, there is an axle besides the heavy ass 14 bolt that will bolt in. I will get some pics when I can. Hope this helps someone!!!!

badpeanut · 06-12-2004, 01:56 PM

Excuse my ignorance, but how does this compare to the '67-'72 leaf spring rear suspension (2wd and 4wd if there is a difference)? Is there a more readily available swap for '67-'72s?

b454rat · 06-12-2004, 02:00 PM

I'm not sure on the 67-72s, I never had one, so I couldn't give you a good anwser. I know that the 2wds use coil instead of leaves, but I know that the 4wd use leaves on 1/2 tons. If I remember, I will measure a 67-72 and see what I can come up with.

**JIMs70GMC** · 06-12-2004, 08:19 PM

The 67-72 4x4(10&20) have the same rear spacing 40.5". The 2wd 67-72 rear leaf sprung axles are wider than 40.5".

06-12-2004, 10:51 AM	#1
b454rat Senior Member Join Date: May 2004 Location: Binghamton, NY Posts: 3,469	Hopefully some useful info I hope this info will be helpful to some folks, it was for me. I'm swapping axles in the 62 4wd burban that I have, and was looking for some axles that will bolt in. The front is easy, any 73 and up will bolt in. But the rear, only Gm 1 tons will bolt in, with the 40 1/2" spring pad width. Well, after some searching, measuring, and some head scratching, I found out that 79 and older Ford, HEAVY DUTY 3/4 or maybe 1 ton have the same spring pad width. These are Dana 60s rears, I don't know about the Dana 70s, the junkyard didn't have any. I measured regular 3/4 tons, and they have a wider pad width. So, if anybody is swapping axles on a 60-66 4x4, there is an axle besides the heavy ass 14 bolt that will bolt in. I will get some pics when I can. Hope this helps someone!!!! __________________ 2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 4” SAS 1999 GMC Yukon 350/4L60 6" SAS

06-12-2004, 02:00 PM	#3
b454rat Senior Member Join Date: May 2004 Location: Binghamton, NY Posts: 3,469	I'm not sure on the 67-72s, I never had one, so I couldn't give you a good anwser. I know that the 2wds use coil instead of leaves, but I know that the 4wd use leaves on 1/2 tons. If I remember, I will measure a 67-72 and see what I can come up with. __________________ 2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 4” SAS 1999 GMC Yukon 350/4L60 6" SAS

06-12-2004, 08:19 PM	#4
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	The 67-72 4x4(10&20) have the same rear spacing 40.5". The 2wd 67-72 rear leaf sprung axles are wider than 40.5". __________________ 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

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06-12-2004, 01:56 PM	#2
badpeanut Not a bad nut after all.. Join Date: Dec 2000 Location: ND Posts: 1,759	Excuse my ignorance, but how does this compare to the '67-'72 leaf spring rear suspension (2wd and 4wd if there is a difference)? Is there a more readily available swap for '67-'72s?



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