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 ...

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, ...

I am building a '49 Chevy panel truck with mostly junkyard parts. What do I have to do to use a 700-R4 trans with a carbureted 350 engine? The trans is new enough that it has a lot of wires going to ...

If you've ever modified a car with smaller or larger tires or, perhaps, a different final-drive gear, you've immediately screwed up your speedometer. This is, of course, annoying, but for modern cars ...

I have a '67 fastback with a C4 transmission from a '71 Mustang. I also have a Traction-Lok rear with 3.50 gears. The problem is the speedometer. All of my research indicates the way to calibrate the ...