The Stovebolt Site Forums The Parking Lot Big Bolts CCKW 5 Speed and 5.43 third members/rearends 1.5 tons

A stock CCKW drive line is not made for speed, and the governor will limit engine RPMs (and can be easily removed).

The truck will go 50MPH plus... the placards for max speed are for a different era.

But many people think the overdrive is really much more than it really is. The book puts the OD ratio at .799:1 so if you have a gear ratio calculator you can plug that number in.