Which transmission has the highest overdrive?

[TJSHOTROD]

If you where to use the same truck and change transmission's, which one would have the lower rpm's at cruising speeds and which one would have the highest top speed the 6spd or a auto? Keep in mind everthing else stay's the same.

T. J.

 

[Cummins4Life]

Auto, I'll see if I can dig up the ratios.



[edit] Thanks to dodgeram.org



auto 6spd

1st 2. 45 5. 63

2nd 1. 45 3. 38

3rd 1. 00 2. 04

4th 0. 69 1. 39

5th ------ 1. 00

6th ------ 0. 73

Rev 2. 21 5. 63

 

[TJSHOTROD]

Thanks for the quick reply.

T. J.