Gearing down a late model 40

Discussion in '40- & 55-Series Tech' started by Cruiserhead05, Feb 22, 2004.

  1. Cruiserhead05


    Likes Received:
    Jun 25, 2003
    Marshall, VA
    Been thinking about putting 4.11's in my late model 40 as 3.70's and 33's arent great. I found a set of decent 4.11 ring and pinions from a 78. Just wanted to make sure that would work fine. Also does anyone know how much a shop would charge to swap out my 3.73's for the 4.11's just looking for a rough est.
  2. rgentry


    Likes Received:
    Jan 19, 2003
    Most folks change the entire third members out. It takes quite a bit
    of expertise to set up a new ring and pinion. You could get 4.11's out
    of an older FJ40 or out of an FJ62. You might need to change the
    pinion flanges out to meet your driveshaft pattern, depending on the
    year of your cruiser.

    I'm looking to go the other way (3.70) so let me know if you end up
    pulling your third members out. I won't offer you my current 4.11's
    as my vehicle is 36 years old!

    You can look at for 3rds. I think they want $200
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