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For those that are interested, I used the online ratio calculator with the following inputs:

old tire: 30
new tire: 35
old ratio: 4.2 (with t case in High range)

the result is a ratio of 4.9 in the diffs to keep the same overall ratio. So even on the highway with 4.90's in the diffs, you can spin 35's with the exact same overall ratio and feel as stock montero gen II. so instead of changing my entire engine and a whole bunch of other stuff to make a new engine work, all I had to do was put 4.90's in the diffs and even while in high range, I can spin 35's with the EXACT same overall ratio as a stock gen II montero.

scottie


No you can't. The RATIO is gonna be the same. But you're going to have a slower vehicle.

It's prob going to be fine, and you'll be able to do the same stuff you did before, BUT don't think for a second that everything is a wash, and it is going to be the same.

You can reduce the ratio all you want, but there is alot more to the whole system that you are missing. It's not as simple as JUST reducing the gear ratio.

You're not going to have the same acceleration, or decel as before, and you are effectivly going to lose power overall.

87 Raider 4D56td v5MT1
31's..Basically Stock