Mustang 3.73 Gear Install

Discussion in 'Fox 5.0 Mustang Tech' started by jdemolet, Dec 18, 2013.

  1. jdemolet

    jdemolet
    Expand Collapse
    Member

    Joined:
    Sep 1, 2013
    Messages:
    128
    Likes Received:
    4
    Trophy Points:
    19
    i know you guys have answered these questions but i was looking at ford racing gears on american muscle.com and it includes the ring pinion pinion nut and shims for 160. can i still use mh factory shims or use the ones supplied
     
  2. A5literMan

    A5literMan
    Expand Collapse
    Mustang Master

    Joined:
    Jul 30, 2011
    Messages:
    2,466
    Likes Received:
    796
    Trophy Points:
    134
    Location:
    Illinois
    Use the ones supplied. That's what I did
     
  3. mikestang63

    mikestang63
    Expand Collapse
    SN Certified Technician

    Joined:
    Aug 27, 2012
    Messages:
    4,815
    Likes Received:
    1,552
    Trophy Points:
    154
    Location:
    In the garage
    Use new shims. I'm looking at the AM site and the Ford gears alone are $175

    http://www.americanmuscle.com/ford-373-8693gt.html

    Where do you see the gears and install kit for $160? Not to disuade you from the purchase, but LMRS sells the Ford gears, master install kit with the better gt500 pinion sleeve and bearings, friction modifier, and royal purple gear lube for about $250 before the Stangnet discount. Put this kit in my car 3 months ago.

    http://www.latemodelrestoration.com/item/LRS-4209FRB-K/Mustang-88-373-Ratio-Rear-End-Gear-Kit
     
    A5literMan likes this.
  4. A5literMan

    A5literMan
    Expand Collapse
    Mustang Master

    Joined:
    Jul 30, 2011
    Messages:
    2,466
    Likes Received:
    796
    Trophy Points:
    134
    Location:
    Illinois
    That's what I used! And thought that kit is what he was talking about.:shrug: I didn't pay attention to his stated price.
     
  5. jdemolet

    jdemolet
    Expand Collapse
    Member

    Joined:
    Sep 1, 2013
    Messages:
    128
    Likes Received:
    4
    Trophy Points:
    19
    on american muscles site they have frpp gears with just the shims for 160. the ford number is m-4209-f373n
     
  6. jdemolet

    jdemolet
    Expand Collapse
    Member

    Joined:
    Sep 1, 2013
    Messages:
    128
    Likes Received:
    4
    Trophy Points:
    19
    we get a discount from latemodel if were on this forum i did not know that
     
  7. 88LX5.Oh

    88LX5.Oh
    Expand Collapse
    Advanced Member

    Joined:
    Dec 30, 2011
    Messages:
    1,442
    Likes Received:
    206
    Trophy Points:
    74
    Location:
    Arkansas
    With my Bronco I went from 3.55's to 4.10's and used my factory shims. I seriously didn't even bother buying a shim kit. Back lash and pattern were perfect. I've been daily driving it for close to a year now and have no issues. Also with my car rear end. I went from 3.27's to 3.73's and used the shims from the 3.73 rear end and everything was perfect. But every single damn Chevy rear end we've had come through my shop has had to have a shim kit.
     
  8. jdemolet

    jdemolet
    Expand Collapse
    Member

    Joined:
    Sep 1, 2013
    Messages:
    128
    Likes Received:
    4
    Trophy Points:
    19
    what kind of gasket do I need for the upper and lower gt40 intake manifold on the e7 heads
     
  9. mikestang63

    mikestang63
    Expand Collapse
    SN Certified Technician

    Joined:
    Aug 27, 2012
    Messages:
    4,815
    Likes Received:
    1,552
    Trophy Points:
    154
    Location:
    In the garage
    Search is your friend. It's been asked about 1000 times; or start a new thread if you want people to chime in.
     
  10. jdemolet

    jdemolet
    Expand Collapse
    Member

    Joined:
    Sep 1, 2013
    Messages:
    128
    Likes Received:
    4
    Trophy Points:
    19
    can I reuse my factory bearings that car has only 107,000 miles
     
  11. 88LX5.Oh

    88LX5.Oh
    Expand Collapse
    Advanced Member

    Joined:
    Dec 30, 2011
    Messages:
    1,442
    Likes Received:
    206
    Trophy Points:
    74
    Location:
    Arkansas
    You could if you wanted. Most people would say that you might as well swap in new ones while you're there but if you wanna do a budget set up then go ahead and re use them because 107k isn't too bad I suppose.
     
  12. jdemolet

    jdemolet
    Expand Collapse
    Member

    Joined:
    Sep 1, 2013
    Messages:
    128
    Likes Received:
    4
    Trophy Points:
    19
    im only the third owner so it needs some mods
     
  13. mikestang63

    mikestang63
    Expand Collapse
    SN Certified Technician

    Joined:
    Aug 27, 2012
    Messages:
    4,815
    Likes Received:
    1,552
    Trophy Points:
    154
    Location:
    In the garage
    dude, don't reuse the factory bearings. The car is 20+ years old. Do you really want to pull the rear end apart again because you went the cheapo route? Do it right the first time and be done with it. New bearings, seals, gaskets, for the carrier, axles, pinion, etc.
     
    Fordfreak93 and A5literMan like this.
  14. jdemolet

    jdemolet
    Expand Collapse
    Member

    Joined:
    Sep 1, 2013
    Messages:
    128
    Likes Received:
    4
    Trophy Points:
    19
    yeah im going to use the new bearings I need to know about the new shims with the kit
     
  15. madspeed

    madspeed
    Expand Collapse
    Colonel Mustard
    Mod Dude Founding Member

    Joined:
    Nov 29, 1999
    Messages:
    8,208
    Likes Received:
    1,177
    Trophy Points:
    174
    Location:
    a van down by the river
    What about them?
     
  16. jdemolet

    jdemolet
    Expand Collapse
    Member

    Joined:
    Sep 1, 2013
    Messages:
    128
    Likes Received:
    4
    Trophy Points:
    19
    should I start with the original shims then check the backlash and see if its in spec and go from there
     
  17. Fordfreak93

    Fordfreak93
    Expand Collapse
    Member

    Joined:
    Mar 12, 2009
    Messages:
    64
    Likes Received:
    15
    Trophy Points:
    19
    Location:
    Mooresville, NC
    You could measure your old shims as a starting point, but I would use all new stuff.
     
  18. jdemolet

    jdemolet
    Expand Collapse
    Member

    Joined:
    Sep 1, 2013
    Messages:
    128
    Likes Received:
    4
    Trophy Points:
    19
    are the frpp gears the same pinion depth as the factory 2.73
     
  19. GoldenEagle91

    GoldenEagle91
    Expand Collapse
    Member

    Joined:
    Dec 25, 2012
    Messages:
    233
    Likes Received:
    14
    Trophy Points:
    19
    I did not know that either. How do we get the discount when ordering?
     
  20. jdemolet

    jdemolet
    Expand Collapse
    Member

    Joined:
    Sep 1, 2013
    Messages:
    128
    Likes Received:
    4
    Trophy Points:
    19
    no idea