Dana 60 - Is it a Posi or not? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**JQ-72** · 06-25-2013, 12:50 PM

I just picked up a Dana 60 at a junkyard out of a 1970 GMC 3/4 ton. It listed "maximum traction rear axle" on the SPID. This is Chevy's version of "power lock rear axle". How can you visibly tell if it is a posi? I took the inspection plate off and couldn't really tell. It had some blocks between the spider gears but no clutches. Thanks.
JQ
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**leddzepp** · 06-25-2013, 12:53 PM

If both axles turn in the same direction it is a posi.
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**TBONE1964** · 06-25-2013, 12:59 PM

Can you post some photos?

**JQ-72** · 06-25-2013, 02:59 PM

Here's a picture...

**TBONE1964** · 06-25-2013, 03:14 PM

That looks like a powerlock and it should have clutches inside. They are hard to see but they are there.

**kwmech** · 06-25-2013, 04:58 PM

Definitely a power-loc. One of the achilles heel of the unit is the long bolts on the right hand side. Pull the cap off and check the bolts for being tight. I think torque is 50 lbs and the cap is (I think) 65-70

**JQ-72** · 06-25-2013, 08:46 PM

Thanks for the help guys! Well, I just did a lot of work for nothing. I've got a '69 GMC Custom Camper that I put the posi rear in. Pretty nicely optioned truck with 396, TH400, A/C, aux. battery, etc... but no posi on the SPID. The picture above is actually the rear I just pulled out of the '69. The '70 rear I installed looked identical to this one so I wasn't sure if they were both open or both Power Lock. On the bright side, I've got a desirable axle for sale!!
Joshua

Stu Pidd · 06-25-2013, 09:38 PM

Quote:

Originally Posted by JQ-72

On the bright side, I've got a desirable axle for sale!!

If you weren't so far away, I'd buy it!

06-25-2013, 12:50 PM	#1
JQ-72 Senior Member Join Date: Feb 2001 Location: Killen, Alabama USA Posts: 3,632	Dana 60 - Is it a Posi or not? I just picked up a Dana 60 at a junkyard out of a 1970 GMC 3/4 ton. It listed "maximum traction rear axle" on the SPID. This is Chevy's version of "power lock rear axle". How can you visibly tell if it is a posi? I took the inspection plate off and couldn't really tell. It had some blocks between the spider gears but no clutches. Thanks. JQ Posted via Mobile Device __________________ 72 Cheyenne Super swb. Factory 402/400,tach,posi,AM/FM, A/C. Adding cruise, 8-track 72 Cheyenne Super swb. 350/350 A/C, bucket seats 72 Cheyenne swb. Factory 402/400, tilt, posi, A/C 72 Cheyenne Super K-10. 350/4 spd., posi. 72 Suburban 350/350 tilt, tach, AM/FM, A/C, luggage rack 72 GMC Sierra lwb. 350/350, A/C. medium green/olive interior

06-25-2013, 12:53 PM	#2
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,117	Re: Dana 60 - Is it a Posi or not? If both axles turn in the same direction it is a posi. Posted via Mobile Device __________________ 1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man RIP FleetsidePaul

06-25-2013, 12:59 PM	#3
TBONE1964 Cluster King Join Date: Nov 2012 Location: Junction City, OR Posts: 5,263	Re: Dana 60 - Is it a Posi or not? Can you post some photos?

06-25-2013, 02:59 PM	#4
JQ-72 Senior Member Join Date: Feb 2001 Location: Killen, Alabama USA Posts: 3,632	Re: Dana 60 - Is it a Posi or not? Here's a picture... Attached Images __________________ 72 Cheyenne Super swb. Factory 402/400,tach,posi,AM/FM, A/C. Adding cruise, 8-track 72 Cheyenne Super swb. 350/350 A/C, bucket seats 72 Cheyenne swb. Factory 402/400, tilt, posi, A/C 72 Cheyenne Super K-10. 350/4 spd., posi. 72 Suburban 350/350 tilt, tach, AM/FM, A/C, luggage rack 72 GMC Sierra lwb. 350/350, A/C. medium green/olive interior

06-25-2013, 03:14 PM	#5
TBONE1964 Cluster King Join Date: Nov 2012 Location: Junction City, OR Posts: 5,263	Re: Dana 60 - Is it a Posi or not? That looks like a powerlock and it should have clutches inside. They are hard to see but they are there.

06-25-2013, 04:58 PM	#6
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,718	Re: Dana 60 - Is it a Posi or not? Definitely a power-loc. One of the achilles heel of the unit is the long bolts on the right hand side. Pull the cap off and check the bolts for being tight. I think torque is 50 lbs and the cap is (I think) 65-70

06-25-2013, 08:46 PM	#7
JQ-72 Senior Member Join Date: Feb 2001 Location: Killen, Alabama USA Posts: 3,632	Re: Dana 60 - Is it a Posi or not? Thanks for the help guys! Well, I just did a lot of work for nothing. I've got a '69 GMC Custom Camper that I put the posi rear in. Pretty nicely optioned truck with 396, TH400, A/C, aux. battery, etc... but no posi on the SPID. The picture above is actually the rear I just pulled out of the '69. The '70 rear I installed looked identical to this one so I wasn't sure if they were both open or both Power Lock. On the bright side, I've got a desirable axle for sale!! Joshua __________________ 72 Cheyenne Super swb. Factory 402/400,tach,posi,AM/FM, A/C. Adding cruise, 8-track 72 Cheyenne Super swb. 350/350 A/C, bucket seats 72 Cheyenne swb. Factory 402/400, tilt, posi, A/C 72 Cheyenne Super K-10. 350/4 spd., posi. 72 Suburban 350/350 tilt, tach, AM/FM, A/C, luggage rack 72 GMC Sierra lwb. 350/350, A/C. medium green/olive interior



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