Correct name for Dana antislip unit

We have sure grip but what is the official MoPar name for the "posi" in a 1970 Dodge dana 60.

Power lok I believe is the name.

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)

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.

Define "give it away".

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.

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

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

i see 5.13 and 5.38 ratios were listed.
i wonder how many of those were sold ?

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.

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 ?
CRS, CSS, CHS, and oldtimers disease play hell with one's inner noggin...........

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).