Topic: Message #1126787

[blackdiamond]

Question?

The gear ratio magnification calculation is torque X gear ratio, right?

So if my peak torque is 100 and my R&P in 4.10 my torque multiplied by 4.10 equals 410 lbs.

If I go to 4.56s with same 100 lbs of torque before the 3rd member, my multiplied torque equals 456 lbs.

The difference is 46 lbs of torque increase at the rear wheels when the engine RPM is at it's peak torque of 100 lbs.

Is that correct?

Thanks,

Gnarls.

I believe this to be correct. The bigger advantage, of course, is that instead of only improving a select band of the rpm range gearing applies equally across the board.  4.56/4.10=1.11 so you're getting essentially an 11% boost everywhere. Of course, you shift point will change so you low point in torque to the ground will also shift. You should compare the torque curves throughout each gear and consider shift point to get a full comparison.