Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×

Thread Tools Display Modes
Old 07-15-2021, 09:24 PM   #1
New Member
Join Date: Jul 2021
Posts: 8
Allison 2500PTS transmission reprogramming

Does anyone have specific info on what is accomplished by reprogramming the tranns for the 6th gear I hear about. i am at top speed at 65 would like to up it to 70MPH or 75MPH to better access into lanes at highway speed.

is there an engine governor that might also be changed?

i have a 2007 Bluebird short buss (30' outside) with CAT C7 engine. Allison 2500PTS 2006 or 2007 not sure on trans.

any info will be very much appreciated...

Nick969 is offline   Reply With Quote
Old 08-15-2021, 01:14 PM   #2
Join Date: Nov 2018
Location: Milton, ON
Posts: 15
Year: 2006
Chassis: Freightliner
Engine: Cat C7
I have exact same engine/transmission, do you not have overdrive? When I was driving it back home after purchase I was able to get it up to 70MPH in the straights and it was quite nice.
cilantro is offline   Reply With Quote
Old 08-15-2021, 06:57 PM   #3
Bus Nut
Join Date: Aug 2020
Location: Mesa, AZ
Posts: 748
Year: 1993
Coachwork: 44' Newell Coach
Engine: 8v92T Detroit
Rated Cap: 2 adults and two pigeons
If it is a 6 speed transmission there will not be a way to get it unlocked via BlueBird. They will not provide a letter for Allison to unlock the top gear for liability reasons despite the bus no longer being a bus. I am in the same boat. The possible only choice would be to take the TCM and have it programmed by a tuner. There is someone that is recommended on here but I do not remember who it was or their info.
Bus'n it is offline   Reply With Quote

allison, bluebird, cat c7, increase speed, reprogram

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 11:07 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2023, vBulletin Solutions, Inc.