Allison 1000 transmission
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The 1000 series (and similar 2000 and 2400 series) is a line of automatic transmissions for on-road trucks. All are 5 or 6-speed electronically controlled units and are manufactured by Allison Transmission in Indianapolis, Indiana as well as in Baltimore, Maryland and in Erskine, Minnesota.
Allison 1000[]
Initially the Allison 1000 was a 5 speed transmission, rated to handle up to 620 lb·ft (841 N·m) of torque. This rating has increased as the transmission was updated several times, to stand at 765 lb-ft(1037 N·m) by 2011 in GM truck applications.[1] A new "Generation 4" 1000 was introduced in 2005 that added a 6th gear at the very top of the ratio ladder, making it a double-overdrive. For the 2006 model year, manual gear selection was introduced. This feature gives the driver greater control over the transmission, enhancing operation when engine braking or less frequent shifting is desired.
Gear ratios:
| 1 | 2 | 3 | 4 | 5 | 6 | R |
|---|---|---|---|---|---|---|
| 3.10 | 1.81 | 1.41 | 1.00 | 0.71 | 0.61 (06+) | 4.49 |
Applications:
- Chevrolet Silverado
- Chevrolet Kodiak/GMC Topkick
- GMC Sierra
- Hummer H1
- Chevrolet B-Series
Allison 2000[]
The Allison 2000 is rated to handle up to 620 lb·ft (841 N·m) of torque.
Gear ratios:
| 1 | 2 | 3 | 4 | 5 | R |
|---|---|---|---|---|---|
| 3.51 | 1.90 | 1.44 | 1.00 | 0.74 | 5.09 |
Applications:
- B-7 bus
- C-Series truck
- Cheetah MMPV
- F-Series truck (Ford F-650)
- International XT Series
Allison 3070/4070[]
Applications:
- Western Star Trucks
- Kenworth Trucks
- Peterbilt Trucks
- Freightliner Trucks
- International Trucks
Allison 3700SP[]
Applications:
- Family of Medium Tactical Vehicles (FMTV)
- BAE Caiman MRAP
See also[]
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References[]
- ^ "Allison 1000 Specs & Ratios". www.duramaxhub.com. Retrieved 2021-10-19.
- General Motors transmissions