Allison 6sp: Lower gears for 6spd ally

duratothemax

<--- slippery roads
Aug 28, 2006
7,139
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Wyoming
Yeah you can swap the P1, P2, P3 planetaries out for parts from an Allison 2000/2400.

But...why...? You dont need lower gearing.
 

Bikergil

New member
May 6, 2009
2
0
0
Allison 6sp: Lower gears for 6spd ally

I was just trying to think of ways to maintain fuel mileage with more low end grunt for towing. But I cannot do anything serious to my truck till its paid off. Everyone says the tranny is the first mod I need to do.