The 5 speeds seem to be more expensive than other t case gears ive found and you need to adjust cross member mounting, need different drive shafts and need to figure out a handbrake if you go with a 5 speed as the 5 speed boxes are 50-60mm longerYears ago Fairey built an overdrive to work on the split transfer case but that was years ago. Even if you found one replacement parts would be next to impossible to find. As @nogo said the H55F five sped which just adds an overdrive fifth gear or changing diff gears. Adding the H55F will create clearance problems keeping the hand brake on the transfer case. Models that came with the H55F option the hand brake was on the rear axle. The H55F was never used in the FJ45 or HJ47. Both those the hand was on the transfer case.
The 5 speeds seem to be more expensive than other t case gears ive found and you need to adjust cross member mounting, need different drive shafts and need to figure out a handbrake if you go with a 5 speed as the 5 speed boxes are 50-60mm longer
Does anyone know of 15-20% over drive gears for a transfer case off a 4 speed hj47?
There are 10% overdrive gears for 38mm splitcases.
Go get a 38mm splitcase and then you can use these gears
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They don't make overdrive gears for the split case, but they do make underdrive ones.
An overdrive gear in a 5 speed will be one of the few options. Higher geared diffs is also an option.
Fwiw we do offer overdrive options for the split case. Both stand alone high range gears that don't change the low range and high range OD / low range combos.
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That's awesome. I didn't realize that. I was looking for something like that a while ago, but I never found it. Thanks for the info!