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  1. archie73

    Fj40 axle upgrade recommendation

    So if it’s the factory tune, it’ll put out 250hp/350ftlb from the factory. Assuming it’s a little tired, less. You should be fine I’d think. Definitely, do the mini truck disc swap. Google it. It just the outer part of the axle you’re swapping. ****I did forget to mention you’ll need to figure...
  2. archie73

    Fj40 axle upgrade recommendation

    Just out of curiosity- is that the stock turbo 4.3? Or have you lined up an aftermarket turbo? What kind of numbers will you expect?
  3. archie73

    Fj40 axle upgrade recommendation

    I have the mini truck disc upgrade and recommend it. Pretty straight forward and you get fine spline birfields. Possibly aisin hubs. IFS mini truck calipers are bigger (as I recall) and adding vented rotors finishes the upgrades needed. It’s a messy job, but not terribly difficult. As for the...
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