When paired with the Paccar TX-12 automated manual transmission, the PX-9 diesel engine PX-9 engine produces up to 1,250 lbs.-ft. of torque with a maximum gross combination weight rating (GCWR) of 66,000 pounds for pickup and delivery and other tractor applications.
Peterbilt Announces TX-8 and TX-12 Transmission Upgrades
Peterbilt’s TX-8 automated transmission has received a host of upgrades aimed at vocational applications.