He would be going from ...
SM-326 1st=3.50, 2nd=1.89, 3rd=1.00
to
NV3500 1st=4.02, 2nd=2.32, 3rd=1.40, 4th=1.00, 5th=0.73
I have no idea what the rear end gears are, I would assume they are 4:10 or 4:11 gears. what do they normally come with in these trucks? C10 single cab with 8 ft bed and...