Speedometer correction

[59Ranger92]

I recently purchased 15" wheels and tires to replace the 14's on my truck. I changed the gear on the speedometer cable to correct it. I only had to go down (1) tooth. My truck has the 3.08 rear end and I would like to swap it for something just a little lower. The problem is I am not sure that I can get a gear with less teeth for my truck. I did this once upon a time in an early Chevrolet and changed the driven gear as well as the cable gear. Can I do something similar to this transmission?

 

[59Ranger92]

Actually I think I might have answered my own question. I have discovered, thanks to the Tech section that with a lower gear I need to increase the number of teeth. Which, of course helps me. Thanks for the help (or at least the patience).

 

[Dirmaid]

thats what the tech library is for, glad you got it figured out