Can I swap an upper gearbox say from a ford 306 to a 3.8l? Does the upper gearbox just changes the direction of the drive, or does is it have a specific gear ratio for the motor? Mine has a cracked housing and leaks. I found one for a 306. Not sure if I need to pull it apart and change the gears. How can you tell what gear ratio they are by looking at the gears, if I need to.
Thanks a bunch
Dave
Thanks a bunch
Dave