If you drive your hot rod, even once in a while, then you depend on all of your gauges to be reliable and accurate. Just a small percentage of miscalibration can result in engine damage or failure, ...

If you've ever performed any kind of driveline or wheel and tire swap, you're probably familiar with speedometer calibration. By stepping up to larger tires and/or wheels, the speedometer reads slow ...

Marlan, I am hoping you can help me. I'm running a TH350 tranny in my 1955 Chevy. It has a stock 3.55:1 rear gear, the plastic drive gear has 20 teeth, and I'm running 15-inch tires. The speedo has ...