I have a 49 GMC 1/2 ton that I bought as a stalled project. It has a rear end in it that has a casting #14065251. I was lead to believe this is from a early to med 80's Blazer. When I tried to confirm the gear ratio ( jacked up the rear end, chucked one wheel to keep it from spinning I got just over 2 revs on the drive shaft for 1 rev on the tire opposite tire. Did GM make a 2.08 rear gear set? Or am I doing this wrong?
Tom
