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Thread: Strange rear end gears

  1. #1

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    Strange rear end gears

    Here's what I have in the 1980 D-50 to run 32" tires:

    4.88 (4.875) ring and pinion set; was sold by John Baker Performance in 1982; Mitsubishi parts; 39 teeth on ring gear, 8 on pinion. Ring gear is 10-bolt.
    Installed straight into 1980 Dodge D-50 rearend. Told it is part number MB 527147. When I tracked down John Baker a decade later he said it was a stock Mitsubishi part, but didn't remember what vehicle.

    When it blew due to cracked tooth (long story,) I was number 19 on the waiting list until Mitsu in Japan would set up the CNC to make a run of 20. Had to order a second set to get them to run. Have a spare so it will never happen again!

    Told it was only put in something called a "high-altitude version Montero" and is very rare. Now made of Unobtainium ...

    Looking in the Wiki it doesn't say anything about them.

  2. #2



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    I have a John Baker catalog from 1987 that listed those gears for both monteros and D-50/mm - it was from some special version of the montero / pajero not available in the US. That catalog will be posted shortly. John Baker got special access to the mitsu parts bins as he was racing class 7 off road in the 1980's and winning.
    Pennyman1
    The best Dodge that Dodge never made
    Living the D-50 lifestyle since 1980

  3. #3

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    He had a lot of great stuff for the 1st gen; wish I had purchased more of it when he was in business! These gears are the cat's meow for 32" tires, even the speedo reads accurately.

    Quote Originally Posted by pennyman1 View Post
    I have a John Baker catalog from 1987 that listed those gears for both monteros and D-50/mm - it was from some special version of the montero / pajero not available in the US. That catalog will be posted shortly. John Baker got special access to the mitsu parts bins as he was racing class 7 off road in the 1980's and winning.

  4. #4



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    Me too; I should have bought the torsen lsd he was selling - the ultimate locker, but at 600 to 800 for the locker, it was outrageous.
    Pennyman1
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    Living the D-50 lifestyle since 1980

  5. #5

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    why so low on the running gears. i've got 33's that i run on my truck when off-roading with stock 4.222 gears and i shift into third gear by 25-30mph and am in 5th by 55mph. when my 31's are on the truck i can start in second gear and take off. and i do have the stock gearing in the truck, it has been confirmed. i have even thought of getting taller gears cause these are almost too short.

  6. #6

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    Stock motor (105hp max) and it keeps the speedo accurate.

    Quote Originally Posted by PowerRam348 View Post
    why so low on the running gears. i've got 33's that i run on my truck when off-roading with stock 4.222 gears and i shift into third gear by 25-30mph and am in 5th by 55mph. when my 31's are on the truck i can start in second gear and take off. and i do have the stock gearing in the truck, it has been confirmed. i have even thought of getting taller gears cause these are almost too short.

  7. #7

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    that was when my motor was totally stock. its worse now that its been modified.
    Last edited by PowerRam348; 01-26-2012 at 06:50 PM.

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