Fred I'm trying to find out why my speedo shows about half the speed I'm actually going (estimated) and how can I fix it. I just checked the rear end and something doesn't seem right. I did 2/3 of a tire rotation for the drive shaft to make exactly 1 rotation. The casting numbers on the rear end are 3896839 with a "N" below that. The other side a MM 86.
Last edited by MickeyP; 04/27/2024 12:15 AM. Reason: Correction
