Thread: Changing Diff Ratio's in the D1

It is easy to jack up a wheel and check the diff ratio.

What do i do, thanks in advance

[quote=roverv8;1456129]

It is easy to jack up a wheel and check the diff ratio.

What do i do, thanks in advance

Jack up a wheel (on flat ground with handbrake off and out of gear with CDL disengaged).

Turn the prop and count the number of revolutions required for one turn of the wheel (or vice versa - the wheel is easier to turn).

Your diff ratio is halved if you just turn one wheel. So 4.11 will be 2.055 turns of the prop for every turn of the wheel. 3.54 will be 1.77.

I used 4.11 on my D1 and found it quite acceptable on the road with 285 x 85 x 16's which work out to be almost 33's and good off road.

Of course I was also able to go up to 35's quite comfortably with that ratio as well which was also helped by a 4.6 under the hood.

But the nicest modded car i drove was a rangie on 35's, standard ratio's and a stinkin hot 4.6 under the hood. Now that was sweet on and off the road but would put you back to looking for crawler gears for extreme low range work where you want to use engine breaking and go slower