Quote:
Originally Posted by pascal
That's right.
The gear ratio of all gears are obviously different between the 2 trannies.
The first gear on the 6 spd will be shorter (taller number), so that makes up for the 3.31 rear axle ratio...
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Actually thats incorrect.
First gear in a GT500 TR-6060 = 2.97
First Gear in a S197 GT TR-3650 = 3.38
3.38 x 3.55 = 12.00
2.97 x 3.31 = 9.83
2.97 x 4.10 = 12.18
So as you see it would takes a 4.10 gear for a GT500's launch ratio (1st x rear axle) to equal the standard S197 GT. The thing is it has 50% more torque but is only 13% heavier so it doesnt need that much launch ratio on street tires.
Why did Ford go with 3.55 in the S197 GT? Optimizes 3rd gear for the top end trap.
Why did Ford go with 3.31 in the GT500? Optimizes 3rd gear for the top end trap.
You didnt really think they could get away with 4.30 in the GT or 4.10 in the GT500 to make 4th work did you?
Besides can you imagine Motor Trend trying to launch that on street rubber?