Quote:
Originally Posted by ECONORAM
I agree. Some good info here. For the 07 RAMs, the stick had a 1:1 5th, and a .78 6th gear, where the auto has a .75 4th and a .67 5th. I figured it was a racket to push better looking mileage figures for autos so the OEM could quit offering stick shifts... Yet they have now offered a 7sp in the new Challenger.
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That's only half the story. What final drive ratios were they paired with?
My old 6-spd Vette had a 0.50:1 OD vs. 0.70:1 in the auto.
But standard ratio was 3.07:1 in the rear end vs 2.59:1 for the auto.
The manual still had a lower overall ratio, but the axle ratios evened them up some. Without knowing the axle ratios for these trucks, you can't really compare the tranny ratios.
I think the Automatics typically have higher gearing because the torque converter multiplies the torque to give more brisk initial acceleration than a manual with the same gearing.