I have an 81 pick-up with a 4 speed, 4x4, i was wondering how do i go about finding out what are the gears in it? it needs to be rebuilt and i was wanting to take out 1st (granny) and move 2nd up to 1st and 3rd up to 2nd and 4th up to 3rd and put a taller 4th gear in its place. But i would like to know what transmission i got first. The engine in the truck is a rebuild 327 if you needed to know what engine is in it.

Cd