Allison 1000


Advance Adapters Inc Transmission Data:

GM Allison 1000 Series (MW7) Transmissions

Automatic Transmission
Forward Speeds ....
Dates Produced .... 2001 - 2009
Manufacturer .... Allison
Case Length .... n/a
Stock Adapter Length ....  n/a
Bellhousing Length ... n/a
Over All Length .... n/a
Case Material ... Aluminum
Output Shaft Spline .... 34 GM 2wd 
29 GM 4wd 
1st Gear Ratio .... 3.10 
2nd Gear Ratio .... 1.81
3rd Gear Ratio .... 1.41
4th Gear Ratio .... 1.00
5th Gear Ratio .... 0.71
6th Gear Ratio .... 0.61
Reverse Gear Ratio .... 4.49
Transmission Weight .... 330
Max Engine Torque .... 620
Fluid Type ....  Dextron VI
Fluid Capacity ....  13 qts
Power Take Off Capable .... yes 
Gross Vehicle Weight Rated .... 9,200 - 12,000
Input to Cluster Center Distance .... N/A
all measurements are in inches and pounds unless specified.
Advance Adapters Transmission Rating
Our rating is (1) being the worst and (5)being the best. 
These ratings are based on vehicles with a 10,000 GVW. Jeeps and similar vehicles that are half the weight will be well suited with transmissions rated 3 and above on the strength.
Shifting Quality ....
Strength Quality ....

The Allison was produced as a 5 speed until the 2006 Gen 4 version that added the 6th gear, making it a double overdrive. The 6 speed also added a manual gear selection.

The Allison is a Six speed, rear-wheel-drive, electronically controlled, automatic, double overdrive transmission with torque converter clutch and park pawl.

Additional Features 

*Tapshift Range Selection Mode 
*Grade Braking
*Cruise Grade Braking
*Tow/Haul Mode
*Shift Stabilization 
*Adaptive Shift Controls 
*Heater Performance Mode 
*Low Traction Mode