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#1 |
Senior Member
![]() Join Date: Feb 2001
Location: Killen, Alabama USA
Posts: 3,574
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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 |
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#2 |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,005
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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
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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 |
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#3 |
Cluster King
![]() Join Date: Nov 2012
Location: Junction City, OR
Posts: 5,263
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Re: Dana 60 - Is it a Posi or not?
Can you post some photos?
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#4 |
Senior Member
![]() Join Date: Feb 2001
Location: Killen, Alabama USA
Posts: 3,574
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Re: Dana 60 - Is it a Posi or not?
Here's a picture...
__________________
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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#5 |
Cluster King
![]() Join Date: Nov 2012
Location: Junction City, OR
Posts: 5,263
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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.
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#6 |
Senior Member
![]() Join Date: Mar 2003
Location: Colfax-California
Posts: 8,530
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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
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#7 |
Senior Member
![]() Join Date: Feb 2001
Location: Killen, Alabama USA
Posts: 3,574
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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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#8 |
Registered User
Join Date: Dec 2012
Location: Fox Island, WA
Posts: 135
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Re: Dana 60 - Is it a Posi or not?
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