8 inch traction lock rear

Discussion in 'Classic Mustang Specific Tech' started by Falcon79, Mar 7, 2012.


  1. Falcon79

    Falcon79 Active Member

    Joined:
    Apr 7, 2009
    Messages:
    193
    Likes Received:
    7
    Trophy Points:
    29
    Location:
    Dallas, TX
    I want to put traction lock into my 8 inch rear, I'm running a small block with a few performance upgrades, but nothing with high HP. Does anyone know of the cheapest way to do this?
    #1
  2. 65fastbackresto

    65fastbackresto Active Member

    Joined:
    Apr 13, 2007
    Messages:
    1,229
    Showcase:
    3
    Albums:
    2
    Likes Received:
    3
    Trophy Points:
    39
    Location:
    AR
    I took my 8 inch rear to a 4 wheel drive shop and they installed a 355 posi for $1100.
    #2
  3. PoppyMod

    PoppyMod Member

    Joined:
    Jun 27, 2010
    Messages:
    619
    Showcase:
    6
    Albums:
    1
    Likes Received:
    6
    Trophy Points:
    19
    Location:
    Severna Park, MD
    Hi,
    Investigate PowerTrax. It's a DIY deal.
    BTW, I bought a drop-in TSD w/3.25 gears from Currie for $900, but that was a few years ago.
    Good Luck!
    #3
  4. RXTbone

    RXTbone Member

    Joined:
    Mar 31, 2005
    Messages:
    49
    Likes Received:
    0
    Trophy Points:
    7
    Troll ebay and craigslist - I bought an 8" traction-lock chunk, with a 355 gear for $450.
    #4
  5. PoppyMod

    PoppyMod Member

    Joined:
    Jun 27, 2010
    Messages:
    619
    Showcase:
    6
    Albums:
    1
    Likes Received:
    6
    Trophy Points:
    19
    Location:
    Severna Park, MD
    I'll add, I looked through this and two other forum classifies and stumbled upon a 8" 3.55, I'm running now for $350. It's an older Equa-Lok but has been rebuilt. So, they are there.
    Good Luck!
    #5
  6. Falcon79

    Falcon79 Active Member

    Joined:
    Apr 7, 2009
    Messages:
    193
    Likes Received:
    7
    Trophy Points:
    29
    Location:
    Dallas, TX
    If anyone happens to see one for sale in the classified, please let me know.
    #6
  7. Hack

    Hack Active Member

    Joined:
    Mar 24, 2004
    Messages:
    1,914
    Likes Received:
    8
    Trophy Points:
    39
    Location:
    Minneapolis
    You should be able to look around locally and find something, I would think. If you like doing some things yourself you could buy a used chunk for cheap from a junkyard and a rebuild kit and set it up yourself. There are a few specialty tools, but rebuilding a center section and Trac-loc is something most people can handle, IMO. I bought a CD from Bad Shoe Productions, bought the tools I needed and then found a used chunk locally for $100. Currie is a great source for parts and they are CHEAP. I should say good value. :) I think I have less than $300 total in mine including tools and parts. Plus it was fun to do. Probably took me 8-10 hours being excessively careful and taking it apart and putting back together a couple times trying to minimize runout, etc. I would do it again.
    #7
  8. 7991LXnSHO

    7991LXnSHO Active Member

    Joined:
    Sep 1, 2010
    Messages:
    1,123
    Showcase:
    5
    Albums:
    1
    Likes Received:
    90
    Trophy Points:
    49
    Location:
    Central USA
    $1100 seems a lot. Did you provide the parts or did they?
    #8
  9. 2+2GT

    2+2GT Well-Known Member

    Joined:
    Apr 25, 2009
    Messages:
    3,333
    Likes Received:
    7
    Trophy Points:
    59
    Location:
    Southeastern Pennsylvania
    That's high unless they also installed it.

    If you can R&R your own differential, you should be able to get it converted to limited slip with gears of your choice for $600-$800.
    #9
  10. Realmongo

    Realmongo I prefer to be called "Evil Genius" Founding Member

    Joined:
    Oct 10, 2001
    Messages:
    2,126
    Showcase:
    1
    Albums:
    1
    Likes Received:
    4
    Trophy Points:
    49
    Location:
    Western Mass
    I put about $1100.00 into my 8" rebuild also. For it, I got a Detroit differential, new seals and bearings, and a Motive Gear 3.25:1 ring and pinion set.
    #10
  11. Hwyman

    Hwyman Member

    Joined:
    Nov 26, 2010
    Messages:
    57
    Likes Received:
    2
    Trophy Points:
    9
    Location:
    Bakersfield, CA
    If you look around of ebay, you can find some people that rebuild diff's. I bought a complete 3rd member, with quality parts, 3.80 trac loc gears, warranty, for about $850.00. It's been a little while, and he isn't doing it anymore, but there are some others.
    #11
  12. chris66dad

    chris66dad Member

    Joined:
    Dec 19, 2008
    Messages:
    167
    Likes Received:
    0
    Trophy Points:
    17
    Location:
    Benicia California
    #12
  13. 67GTFB

    67GTFB Member

    Joined:
    Nov 30, 1999
    Messages:
    122
    Likes Received:
    4
    Trophy Points:
    19
    fwiw .... I'm running a Detroit True-Trac and a 3.55 R&P set in the 8" .... just love this setup with a T5 .... the True-Trac works well for modest to robust engines .... and there is no "clunking" during turns .....
    #13
  14. horseballz

    horseballz Member

    Joined:
    Oct 1, 2009
    Messages:
    766
    Likes Received:
    15
    Trophy Points:
    19
    Location:
    Las Vegas, NV
    tj is da man,
    There are a bunch of guys doing 8 inch rears for a few bucks less, but using cheap parts, tj (linked above) is an old guy who's been doing it all his life and does superb work and excellent warranty/customer service. His price foe an 8" just went up from $800, recently, and he used to pay shipping and $65-$75 for your old chunk in his crate, maybe he still does.
    Gene
    #14
  15. Smitten65

    Smitten65 Member

    Joined:
    Jan 7, 2011
    Messages:
    56
    Likes Received:
    4
    Trophy Points:
    19
    Location:
    FL
    I just got a 3.40 trac -loc from TJ on ebay also. SUPER fast shipping and very easy to deal with. He shippd mine the same day! He's selling the extra strong 4 spider versions too. I was very pleased.
    #15
    BarnStang likes this.
  16. BarnStang

    BarnStang Founding Member

    Joined:
    Mar 2, 2001
    Messages:
    1,239
    Likes Received:
    0
    Trophy Points:
    37
    Location:
    Hagerstown, MD
    Yep. Great vendor. My buddy and I both bought a center section from TJ. Period correct case for my restoration and detailed well. Glad you found him.
    #16

Share This Page