changing gear ratios

[DPC]

What would it take to change gear ratios in a 5 speed Allison? Make 3rd 1.81, 4th 1.20 and 5th .071 that way I could do a 3rd gear start and the allison would only need to shift two times. This would be for a drag truck.

 

[DPC]

If it's not possible could you make an allison stay together with a 3rd gear start, stock ratios, if you had the HP to do it? Stock third is 1.41. Maybe a high stall with a manual lock-up?

When I used to pull often, 3rd and even 4th gear starts were very common, but in low transfer...

 

[Mike L.]

You are in LaLa land.

 

[DPC]

What part of LaLa land? Changing ratios, 3rd gear starts or???

 

[mike diesel]

Changing ratios.