[jonzcustomshop]

tony I was not able to get the vin decoder link to work, but my 64 owners manual helped:
4= 1964
c= conventional cab
14= 1/2 ton
4=cab & pickup box
H=fremont (calif assembly plant)
103757= #3757 produced that year

there is no way to tell the motor and trans and rear end data off the vin tag.
the rear axle tube pass side near the diff should have a code stamped in it, however I don't have a break down of the codes...
the owners manual shows a standard rear ratio of 3.73 for all c 10's, with 4.11, and 3.07's being optional

you have a low hump cab, so there were 3 trans available in low hump.. powerglide
a chevrolet 3 speed- r=3.14, 1=2.94,2=1.683=1
or a (borg) warner 3 speed -r=3.76,1=3.17,2=1.75,3=1

engines available for the ck 10,20,30 were:230 (6), 292 (6), and 283(8)