Allison doesn't make an 18 speed transmission.
There's really no telling, say between 18 - 30 lbs.
18 lb = 8.16466 kg
Anywhere from five to 18. The military M915 has a five speed automatic transmission. Most major fleets run 10 speed transmissions.
5 18 is a number which is an abstract concept. It does not weigh anything!
No you cannot change a 13 to a 18 speed, however you can change a 18 speed to a 13 speed just by changing the shift knob.
3.5
No you can not, it is a different transmission. The 18 speed has a splitter for the lower range as well as high range.
The difference between a 21-speed and an 18-speed transmission in a semi-truck lies in the number of gears available for different driving situations. Having more gears in a 21-speed allows for finer control over the engine's RPM and speed, providing better efficiency and performance compared to an 18-speed transmission. This can be especially beneficial in varying terrain or road conditions.
Either a proprietary Mack 18 speed or an Eaton-Fuller 18 speed. Various models of the Eaton-Fuller were available, from 1600 torque to 2100 torque.
25 tons
18-35 pounds