8" differential posi....?

Discussion in 'Technical' started by 19MAVERICK72, Jul 13, 2012.

  1. 19MAVERICK72

    19MAVERICK72 Dan

    Joined:
    Jul 13, 2005
    Messages:
    124
    Likes Received:
    10
    Trophy Points:
    77
    Location:
    Houston
    Vehicle:
    1972 Ford Maverick
    Hello guys!

    It's been a long time!

    I have a question.... I have an 8" differential with 4.11 gear in it. I bought a 3.55 so I can drive my car in the highway, however I would like to have a posi. I saw this one on ebay.
    http://www.ebay.com/itm/8-Ford-28-S...pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr

    Is any one using this? the price is reasonable compared to a true lock....
    I don't know what's the difference? should I go with this?

    Thanks!
     
    19MAVERICK72, Jul 13, 2012
    #1
  2. Mavman72

    Mavman72 Gone backwards but lookin' forward

    Joined:
    Apr 24, 2007
    Messages:
    6,759
    Likes Received:
    272
    Trophy Points:
    273
    Location:
    Buffalo N.Y.
    Vehicle:
    1972 Maverick 2 door.Original V-8 3 spd std shift.Also a 72 one owner Sprint sporting a 351 Windsor
    I have one of these in my Sprint...From the same seller...No issues with it at all...I will say this though. If you plan to drag race or punish the car on a normal basis...This only a two pinion trac lok and not as strong as a four pinion and may not take to regular beatings for a long time...
     
    Mavman72, Jul 13, 2012
    #2
  3. 19MAVERICK72

    19MAVERICK72 Dan

    Joined:
    Jul 13, 2005
    Messages:
    124
    Likes Received:
    10
    Trophy Points:
    77
    Location:
    Houston
    Vehicle:
    1972 Ford Maverick
    awesome! Thanks for the input!

     
    19MAVERICK72, Jul 13, 2012
    #3
  4. Jsarnold

    Jsarnold Senior Member

    Joined:
    Oct 29, 2008
    Messages:
    2,842
    Likes Received:
    4
    Trophy Points:
    102
    Location:
    Raleigh, North Carolina
    Vehicle:
    '72 Sprint
    I also have one. No problems.
     
    Jsarnold, Jul 13, 2012
    #4
  5. mav6977

    mav6977 Member

    Joined:
    Sep 3, 2002
    Messages:
    186
    Likes Received:
    1
    Trophy Points:
    60
    Location:
    Wichita Falls TX
    Vehicle:
    various years
    According to the shop manual's I have (70-79) the 8 inch posi's were only available as 2 pinion's. Only the 9 inch's (and not all of those) were available with 4 pinion diff's.
     
    mav6977, Jul 13, 2012
    #5
  6. 19MAVERICK72

    19MAVERICK72 Dan

    Joined:
    Jul 13, 2005
    Messages:
    124
    Likes Received:
    10
    Trophy Points:
    77
    Location:
    Houston
    Vehicle:
    1972 Ford Maverick
    Will it be able to handle 350hp? It should right?
     
    19MAVERICK72, Jul 13, 2012
    #6
  7. maverick75

    maverick75 Gotta Love Mavs!

    Joined:
    Mar 31, 2005
    Messages:
    9,014
    Likes Received:
    14
    Trophy Points:
    172
    Location:
    Riverside, California
    Vehicle:
    The mav is gone but i'm still here!
    8"s never had a posi ever, posi is GM not Ford. Also They're talking about aftermarket units which are available with 4....
     
    maverick75, Jul 13, 2012
    #7
  8. Bryant

    Bryant forgot more than learned

    Joined:
    Aug 7, 2007
    Messages:
    6,538
    Likes Received:
    153
    Trophy Points:
    203
    Garage:
    1
    Location:
    San Diego
    Vehicle:
    71 Maverick
    that one will handle 350hp with no problems.
     
    Bryant, Jul 13, 2012
    #8
  9. mav6977

    mav6977 Member

    Joined:
    Sep 3, 2002
    Messages:
    186
    Likes Received:
    1
    Trophy Points:
    60
    Location:
    Wichita Falls TX
    Vehicle:
    various years

    Yes, I know, Ford used the name "Traction Lok". And yes, they were available on 8 inch axles. They are listed in several of my price guides for cars that would not have had 9 inch axle applications, like Mustang II's.
    Posi, Trac-Lok, Sure Grip, they all do the same thing.
     
    mav6977, Jul 14, 2012
    #9

Share This Page