AW 4 Transmission substitute?

[johnj92131]

The AW 4 automatic transmission is just about identical to the automatic transmission used in Toyota trucks of the same vintage right???

 

Well, several years later, Toyota has moved to a 5 and 6 speed automatic transmission with a wider gear spread than the !@ 4.

 

Has anyone looked at how to substitute these later, wider spread transmissions into our jeeps?

 

For example the 6 speed auto in the Toyota has a 3.56 (or so) first gear and a .56 final overdrive. Heck, with my 3.55 final drive that would be like a 4.50 rear end in 1 st gear and like a 2. 48 final drive in 6th. A 30% longer finial drive and a 20% steeper first gear off the line.

 

Not bad at all. 20% more power off the line and 30% fewer RPMs at cruise.

 

Is their a manual transmission that can do that for me?