Is your speedometer accurate?
If your speedometer is mechanical and not electronic this should work to make it accurate. When I had my ’32 with the Hemi in it, the speedometer was way slow. Here is how I fixed it. First you have to disconnect the speedometer cable from the back of the speedometer. You need a rev-counter like the one shown in the picture or one similar that will work. You then hook the end of the speedometer cable to the spindle on the rev counter as shown in the picture. I used…
