If it is a 4L60e it has a VSS. If it does have a gear driven speedo output then it is a 700-R4.

You can get a converter box to go from either to the other.


From the Rocky Mountains?
Check in with the RM Bolters!
HiPo Forum Moderator

1958 Task Force Truck
"Frank" gets a new lease on life
Follow in the DITY Gallery
1959 3200 Task Force
The Ballad of Enkidu
The Saga in the DITY Gallery ~ and the story continues