Transmission & Driveline
I have a 700R4 with 3.73 gear and 27.25 tire, original speedometer in a 68. I was registering over 20MPH off @ 70MPH. (between 90& 100) I checked with a vendor that suggested a 17 drive and a 45 driven. I installed this setup and now I am 6MPH off @ 50-60. I could also have used a 15/41 but the...