allison 6 speed convert

[Archive]

I have a 1996 with a five speed trans. Has anyone changed to a 6 speed trans on a 1996. If so, How long does it take ?, How much does it cost ?, and finally would you do it again ?. Thanks for any input. Dale in Palmdale Ca.

 

[Archive]

Certainly not an expert on this one, but I believe the new 6 speed gearboxes are all part of the computer crap integrated into everything on the truck, and that without the wires plugged in, it aint gonna fly... If you just got $$ to throw at it, why not exchange your gearbox for a Texas reman with the spine fix for 5th gear, get to Camping World and put in a US Gear overdrive unit... 9 speeds, no headaches, stupid fuel mileage!

 

[Archive]

Dale:

I bolted a 2000 5sp up to my 96. Tcase bolts up the same. Had to change the shiftllever and boot somewhat. As I understand it, a NVG5600 should bolt up. Probably need a different clutch, tcase should bolt on. Have to change shafts,6sp is longer. No wires to deal with other than what runs over the trans. I believe the frame support is slotted to allow enough movement back.

I checked into this somewhat when I replace my 5sp. The $5200 price for just the trans scared me off!

This has been done on a 12V by now and someone might shed some light.

jjw
ND

jjw

 

[Archive]

Originally posted by BCFAST:
Certainly not an expert on this one, but I believe the new 6 speed gearboxes are all part of the computer crap integrated into everything on the truck, and that without the wires plugged in, it aint gonna fly... If you just got $$ to throw at it, why not exchange your gearbox for a Texas reman with the spine fix for 5th gear, get to Camping World and put in a US Gear overdrive unit... 9 speeds, no headaches, stupid fuel mileage!