This transmission is completely rebuilt and comes with the 10 spline 1 1/8″ input shaft and the adapter for a D-18 small hole or a D-18 or a D-20 large hole t/f case.
The T-18 is a heavy duty truck style 4 speed transmission with a granny low 1st gear. It was used in 3/4 ton and larger trucks from 1965-1991. This transmission has a 1 1/16th inch diameter input shaft with a length of 6 1/2 inches from the face of the transmission. They have a total length of 11.9 inches and weigh 145 pounds.
This transmission comes complete with: shift tower, shift handle, new adapter kit, & torque lock sliders. Torque lock sliders are specially machined shift collars with a groove to prevent slipping out of gear in the future.
Main shaft spacer for rear output available for $22.00 NEW
| 1st Gear | 6.40 (6.32) to 1 |
| 2nd Gear | 3.09 to 1 |
| 3rd Gear | 1.69 to 1 |
| 4th Gear | 1.00 to 1 |
