Hi All
On my '79 1/2-ton 4x4, I have a 4" lift with 33" tires. A couple of years ago I remember somebody posted the formula to change the speedometer gear. It had to do with the gear ratio, size of tires, etc. If anyone can remember it or a website, I'd appreciate it.
Rick, 79chevy 1/2 ton 4x4 project