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Correct name for Dana antislip unit #2873462
01/12/21 10:20 PM
01/12/21 10:20 PM
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V194 Offline OP
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We have sure grip but what is the official MoPar name for the "posi" in a 1970 Dodge dana 60.

Re: Correct name for Dana antislip unit [Re: V194] #2873465
01/12/21 10:34 PM
01/12/21 10:34 PM
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Abilene, Texas
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fastmark Offline
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Power lok I believe is the name.

Re: Correct name for Dana antislip unit [Re: fastmark] #2873526
01/13/21 05:41 AM
01/13/21 05:41 AM
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Port Huron, Michigan
MI_Custumz Offline
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Read on a couple pages, take it as you will:

1958-1969 used the Dana Power-Lok (# 2881487)
1969-1974 used the Borg Warner Spin Resistant (# 2881343)

(Source: 1984 Direct Connection Chassis Book)
9 ¾ AKA Dana 60
The early rear ends were 23 tooth "Power Lok" (1966 - 1969) differentials. In 1970 the 9 ¾ went to 35 tooth axle shafts and were called "Track Lok" differentials.
Dana Power Lok, 1962 - 1969 which are rebuildable (clutch packs)
Borg-Warner Spin Resistant, Late 1969 - 1974 which are not rebuildable (cone type)

Last edited by MI_Custumz; 01/13/21 05:42 AM.
Re: Correct name for Dana antislip unit [Re: MI_Custumz] #2873531
01/13/21 06:44 AM
01/13/21 06:44 AM
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fastmark Offline
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Ok. I have a question. All the Danas I’ve built so far have the Power Lok. I’ve got a 73 Dana rebuilt by DoctorDiff. It has a Track Lok. I’ve got a 70 b body from a charger that has never had the cover off. So your saying it should have the Track Lok and all ebodies as well? I was considering cutting this 73 Dana down to ebody width. I can’t seem to give it away as a 73 b body. I’ve got extra axles and a Power Lok but they are 68 b body.

Last edited by fastmark; 01/13/21 06:44 AM.
Re: Correct name for Dana antislip unit [Re: fastmark] #2873542
01/13/21 07:22 AM
01/13/21 07:22 AM
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Tucson AZ,
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MadMopars Offline
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Originally Posted by fastmark
I was considering cutting this 73 Dana down to ebody width. I can’t seem to give it away as a 73 b body.


Define "give it away". wink

Seriously, I'd love to save it from getting cut down and put it in my 73 GTX. If you are considering letting it go, shoot me a PM and let me know. up

Last edited by MadMopars; 01/13/21 07:23 AM.
Re: Correct name for Dana antislip unit [Re: MadMopars] #2873652
01/13/21 10:25 AM
01/13/21 10:25 AM
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NachoRT74 Offline
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I don't get it... Isn't the same suregrip than Power lock ?

I know Ford names it Limited Slip, GM Positraction and Mopar Suregrip, but then... Borg-Wagner and Dana gave their own names for the same pieces?

If so... a the same Dana "Power Lock" mounted on a Mopar is a "Sure Grip", but on a Ford is a ¨"Limited Slip ? 3 diff names for just one single piece LOL

Re: Correct name for Dana antislip unit [Re: V194] #2874219
01/14/21 11:47 AM
01/14/21 11:47 AM
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central il.
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second 70 Offline
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Originally Posted by V194
We have sure grip but what is the official MoPar name for the "posi" in a 1970 Dodge dana 60.


70 had both powr- loc and trac-loc check housing number the trac-loc is a weaker unit.


dana 60 codes.jpg
Re: Correct name for Dana antislip unit [Re: second 70] #2874230
01/14/21 12:07 PM
01/14/21 12:07 PM
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north of coder
moparx Offline
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i see 5.13 and 5.38 ratios were listed.
i wonder how many of those were sold ?
beer

Re: Correct name for Dana antislip unit [Re: moparx] #2874961
01/16/21 12:21 AM
01/16/21 12:21 AM
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Originally Posted by moparx
i see 5.13 and 5.38 ratios were listed.
i wonder how many of those were sold ?
beer

Notice the years an axle lengths of those. They never came in any production car. They were sold over the counter as Direct Connection items for building race cars. IF I remember correctly they had 44" or 52" housings and fit cars that had the springs moved into the frame rails.


In theory, there is no difference between theory and practice. In practice, there is.
Re: Correct name for Dana antislip unit [Re: GomangoCuda] #2875017
01/16/21 09:11 AM
01/16/21 09:11 AM
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Michigan
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Transman Offline
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Originally Posted by GomangoCuda
Originally Posted by moparx
i see 5.13 and 5.38 ratios were listed.
i wonder how many of those were sold ?
beer

Notice the years an axle lengths of those. They never came in any production car. They were sold over the counter as Direct Connection items for building race cars. IF I remember correctly they had 44" or 52" housings and fit cars that had the springs moved into the frame rails.


Exactly.

Re: Correct name for Dana antislip unit [Re: Transman] #2875047
01/16/21 10:51 AM
01/16/21 10:51 AM
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north of coder
moparx Offline
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you guys are correct ! i did NOT see the axle lengths, and i do remember the DC 44 & 52" housings offered.
see what you guys are looking forward to when you get old ? biggrin
CRS, CSS, CHS, and oldtimers disease play hell with one's inner noggin...........
beer

Re: Correct name for Dana antislip unit [Re: moparx] #2875226
01/16/21 06:01 PM
01/16/21 06:01 PM
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Polson, MT
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Mopar terminology for any year friction type traction differential, regardless of manufacturer or differential type is "Sure-Grip".

Dana/Spicer terminology for '68 and older 7.25", 8.75", 9.25" and '70 and older 9.75" friction type traction differential is "Powr-Lok" (4 pinion clutch).

Dana/Spicer terminology for '71 and newer 9.75", '8? and newer 8.25" and '8? and newer 9.25" friction type traction differential is "Trac-Lok" (2 pinion clutch).

Borg Warner terminology for '69 and newer 8.25", 8.75" and '73 and newer 9.25" friction type traction differential is "Spin-Resistant" (cone).

DAPCO terminology for the rare '60s era 8.75" locking type traction differential available in some fleet order pick-ups and over the counter 8.75" third members is "NoSpin" (Detroit Locker).







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