Not sure how you're going but posting this for reference.
3.54 gears on 32's with MT82 MT82_3.54_Ashcroft Ratio Calc.pdf
4.12 gears on 32's with MT82 MT82_4.12 ratio calc.pdf
Not sure if you're used to changing final drive ratios, but at least with a Landrover you can further augment your high range by changing out the transfer case gears, if you find that the RPM's are not ideal.
Sometimes it is a combination of CW&P as well as transfer case gears that nets you the 'right' final drive for your particular application.
It's far more important to get the torque curve matched to the wheel speed.
Knowing how much torque you can push to the wheels is half the battle.
a Dyno is very useful for this - as they not only give you a 'max power' readout, they can give you torque at the wheels in each ger for the engine RPM. Far more useful for making ratio adjustments than outright guesswork.
The ashcroft calculator is quite comprehensive for the mathematics. To make it effective though, you need those torque figures from the dyno to confirm if the engine can actually pull that particular gear at those RPM's with the weight you have.
Of course, that last issue - i.e. the GVM one, is another spanner in the works. because you also have things like roofracks etc creating additional drag (increase in the coefficient of friction) which placed additional load on the engine and can totally stuff up your choice of final drive.
Just some things to consider.
? ⨏ Joe
1991 RRC Ardennes Green Oswald
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