ok, so what I'm getting so far is

serial# - F302B means 'Flint March 02nd 235/powerglide ?

Block date-casting - CON3 K 29 8 Means November 29th 1958 ??

and block casting # 3764476 means 1958-1962 235 ???

This is silly, I'm reading something wrong to come up with two conflicting dates... grrrr....