PDA

View Full Version : possible to unlock 6th & 7th gear on older allison?


rubbersidedown
September 16th, 2008, 05:50 AM
just a question, they can do it at the dealers (larger truck), just wondering if it is a possibility with the software only???
GMPX
September 16th, 2008, 11:39 AM
I don't think so.
robertleeii
September 17th, 2008, 10:01 AM
7th gear??
DmaxHawk
September 28th, 2008, 12:35 PM
No seventh gear...in allison 1000 on light duty trucks. Are you talking about the Kodiaks and Topkicks?
DURAtotheMAX
October 6th, 2008, 06:32 AM
no you cant have 7th gear on ANY 1000/2000 series allison. 6th gear is C2 and C4 I think. Next up to get this "hypothetical" clutchpack order would be C2 and C5. If you apply C2 and C5 you get a tie up. Boom.
Brayden
March 17th, 2009, 07:19 PM
C2 and C5 create a transbrake since they're splined together. The MD3070's have seven speeds, but have another clutch pack and planetary added to the back.

Sorry to dig up a dead thread :D
DURAtotheMAX
March 18th, 2009, 07:26 AM
C2 and C5 create a transbrake since they're splined together.


I already said that above! :tongue: :D
Brayden
March 18th, 2009, 03:16 PM
Yeah..missed that..