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Old 07-19-2006, 12:40 PM   #1 (permalink)
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Need help to identify this traction aide

I picked up a 77 non banjo style ford 9 inch. i need to know what kind of traction aide this is. I dont see any clutches like in most limited slips. is it a Posi, Trac-lock or Locker?

Here are the pics



this next pic shows some of the numbers on it they read CRAW 420


the last pic shows the other side with more numbers on it they read 70E25 MCC 70
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Old 07-19-2006, 12:49 PM   #2 (permalink)
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It looks like a spool are something like that.
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Old 07-19-2006, 01:07 PM   #3 (permalink)
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Quote:
Originally Posted by TANNERJENNINGS24
It looks like a spool are something like that.

It's not a spool....if it were, it would be one solid piece.

I believe that's Ford's version of their open differential.




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Old 07-19-2006, 01:13 PM   #4 (permalink)
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the tag that was caked on the centersection reads 3L50 from my understanding the L stands for locker of some sort. also i bought it from a friend that was parting out the 77 f150 did a burn out in the truck and left 2 25 ft long black marks.
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Old 07-19-2006, 01:13 PM   #5 (permalink)
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Quote:
Originally Posted by Aces'n'8s
It's not a spool....if it were, it would be one solid piece.

I believe that's Ford's version of their open differential.
Yes I think your right,now that I looked closer I can see the spider gears inside the carrier. Sorry my bad
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Old 07-19-2006, 01:27 PM   #6 (permalink)
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so the tag lies then?
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Old 07-19-2006, 01:38 PM   #7 (permalink)
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so the tag lies then?
No...Since it is so easy to swap Ford 9's (swapping 3rds....not necessarily gearsets) somebody may have swapped 3rd members and disregarded the tag.
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Old 07-19-2006, 04:18 PM   #8 (permalink)
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take a picture from the backside of the ring gear, thats the easiest way to tell a trackloc from a open carrier
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Old 07-19-2006, 05:39 PM   #9 (permalink)
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i see spider teeth inside that opening, looks like an open diff to be
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Old 07-19-2006, 05:43 PM   #10 (permalink)
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yep its open diff.
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Old 07-24-2006, 12:54 PM   #11 (permalink)
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How many spider gears are in it? 4 or 2, could be a track lock. I just got rid of one, look inside the middle, is there something that looks like a little cube? If so, its a 4pinion track lock
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Old 07-25-2006, 01:17 PM   #12 (permalink)
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You need to look at the ring gear side. The L on the tag means limited slip, not locker. The picture shows open on the left, LS on the right.
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Old 07-25-2006, 09:11 PM   #13 (permalink)
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Oh by the way, Through my research.. make sure its not a 9 3/8" housing.. got screwed on one of those before.. The 4pinion track locks were found in alot of those.. NO GEARS! But the Carrier is good for 9" gears.

Post some more pics of the entire housing and the backside of the carrier as stated by quick and dirty
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Old 07-25-2006, 09:16 PM   #14 (permalink)
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Quote:
Originally Posted by Jrod-13
take a picture from the backside of the ring gear, thats the easiest way to tell a trackloc from a open carrier

Quote:
Originally Posted by Quick & Dirty
You need to look at the ring gear side. The L on the tag means limited slip, not locker. The picture shows open on the left, LS on the right.

Quote:
Originally Posted by 87 pathy
Post some more pics of the entire housing and the backside of the carrier as stated by quick and dirty

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Old 07-25-2006, 10:15 PM   #15 (permalink)
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5/8 head on the ring gear bolts on a LS rather than 3/4 for open diff.
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Old 07-26-2006, 02:24 PM   #16 (permalink)
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Quote:
Originally Posted by TANNERJENNINGS24
It looks like a spool are something like that.

Dude, step away from the bong.
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