New Rearend Project........

Discussion in 'Technical' started by Fearmont80, Dec 8, 2004.

  1. Fearmont80

    Fearmont80 Member

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    Well now that I got the clutch pedal situation squared away I can get to the rear-axle.I wasn`t about to spend $500-$600 on just a good posi center section,and a spool was tempting,but not enough drivabilty.I ended up doing some measuring and researching.I would have had to get a set of like 1 1/2" bolt-on wheel spacers to run the wheels I`m planning to run anyways,so I decided on a fox-body Mustang 8.8" posi rear end.The rearend in my car is 57.25" from axle flange-to-flange,and the Mustang one is around 59" or so.The extra couple inches will mean I will only have to run front spacers to clear those damned ball joints.I picked up a T-Bird Turbo-Coupe rear (same as `stang minus brakes) with posi and 3.55 Gears for $100...I know I can sell the 4-lug rear disc stuff off it easily,and find a set of 5-lug Ranger rear axles/drums pretty easily and be set to go,I`ve done this swap on fox-body cars before so I know it`ll work.Only hard part is the 2 hours I spent tonight taking all the unneccassry crap off of it.And I`m only have done.Then gotta cut the perches off the Maverick rear and measure out where to weld them to the 8.8.Still need to do alot of cutting/grinding on that 8.8 though before I get to that point.This way I should have a rearend thats easier to fix/find parts for,and cheaper overall.
     
  2. PINKY

    PINKY .....John Ford.....

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    sounds like a nice project to create a "tech" article on. Take plenty of pics, documentaion and what-not....might be of great help to someone in the future.
     
  3. Mavaholic

    Mavaholic Growing older but not up!

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    I think if your going to go with the 8.8, I'd find a Explorer rear. Its already 5 lug and disc brakes to boot.
     
  4. littleredtoy

    littleredtoy Seth

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    Try www.ringpinion.com
    They were advertising new Trak-lok units for 8 in. rears in Mustangs
    and Fords. I called, they are about $310.

    Seth
     
  5. mercgt73

    mercgt73 Member Supporting Member

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    hey, thats a new site to me and a very cool one at that. if anyone has any questions about the different types of differentials and such, check out thier Technical Help section, it is very informative! (y)
     
  6. Fearmont80

    Fearmont80 Member

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    Thats $300 for just a posi,then figure a set of gears/install kit is atleast another couple hundred.....It adds up.I should have under $200 into this one whe its all done and have 3.55 gears and posi.
     
  7. littleredtoy

    littleredtoy Seth

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    Actually, I checked on the locker unit, ring and pinion and
    install kit. His posi units are cheaper than several that I
    have found, but his gears are around $300 as well, plus $75+/-
    for the entire install kit.

    I have picked up 8 in. posi units at swap meets for $350-$450.
    Seth
     
  8. Fearmont80

    Fearmont80 Member

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    The 8.8" is in!! I got my new spring perches delivered today,so I took out the 8" rear tonite and mocked the 8.8" in place,tacked the perches on and bolted it all in,mounted the wheels/tires and let it off the stands.It ended up working just like I thought it would.With 275/45/17 tires in the rear on 17x9 wheels I have no clearence issues and actually have room to spare.I need to take it back out and finish welding the perches in place now that I know there where I want them.and clean/paint and assemble all the brakes,etc.Sorry,forgot to take progress pics,but its not that complicated of a process,mostly alot of time cutting off the old brackets/grinding everything smooth.
     
  9. Earl Branham

    Earl Branham Certified Old Fart

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    Good job! Hope it all works out!
     
  10. Old Guy

    Old Guy Member

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    How much pinion angle did you use?
     
  11. Fearmont80

    Fearmont80 Member

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    Whatever the 8" had....I just used a level and compared the pinion angle to the spring perch angle and copied that onto the new rearend.No idea what the exact angle is,but I just copied the stock angle I guess,it looks right.
     

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