[olddog]

Is there something you do not like about the Ford Tracloc? If it isn't causing a problem, leave it alone. Assuming it has clutches in it, measure how much torque it takes to make it slip. It may need new friction discs.

What are your transmission gear ratios? How many gears? Typically a 4th gear in a 5 speed is 1:1 and 5th is 0.8:1 or 0.65:1. 1st gear ratio is handy to know also. The answers matter when changing rear end ratio. Assuming 4th is a 1:1 ratio how many rpm is the engine turning at 60 mph.

If all this was answered in an earlier post, point us to that post. I gotta run.