Gearing Question: Is 3.31 enough?

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05-07-2011, 12:53 AM

#31

JIM5.0

5th Gear Member

Join Date: Jul 2010

Location: Texas

Posts: 4,404

Quote:

Originally Posted by SpartaPerformance

3.31 gears is enough to take the car into the 12's factory stock! The reason why the 3.73 is so popular is because its $395, can't go wrong with that. If you're looking for MPG you'll lose about 1mpg highway, at 70 mph you'll be around 2,000 rpm with the 3.73's

I know this is form a year ago, but interestingly, with 3.31 gears on an MT82 in 6th gear (overdrive) and stock Perilli Nero-zero tires, at 70MPH, I am turning 2000 RPM on the tach.

I guess that is not to much or a surprise considering the MT82 1st hear is 3.66:1, which is very deep.
Compared to a T56 or TR6060 with 3:1 1st gear, to get the equivalent total gear ratio at 1st gear, you would have to mount 4.10:1 rear gears a car with the T56/TR6060.