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Re: What's rear gear ratio are you running?
Consider how far modern cars have taken this.
2006 corvette has;
2.56 diff ratio and a 4.02 first gear in the automatic. (For a 10.29 final drive ratio)
Not much difference in the first gear final drive ratio is there?
On the top end a lot of difference.
2.56 with a .67od ratio is a 1.72 final drive. (4L80E transmission)
With the Muncie and others it's just the 1* the differential ratio or just the diff ratio.
Say 3.73's, if you cut the Corvette's ratio in half it's still a higher @ 3.43.
Ultimately the motor is turning less than half the rpm of the average 60 car.
One can't run a 60's motor this slow without fuel injection. It would buck like a horse.
Simply put typically the newer the transmission the lower the first gear and the more gears there are.
Cheers
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