F1011A engine serial number
F = Flint MI
10 = Oct
11 = 11th
A = car 235 with a 3-speed transmission
It would have hydraulic lifters, if 1958

J 8 7 block date code
J = 10 = November
7 = 1957

3738307 block casting code
Would be 235 used in 1958-60 cars and trucks (and could have had been used with hydraulic or mechanical cam/lifters)

Maybe that block was also available late in 1957?

Similar combination of codes were found in this other discussion board.

Tim
1954Advance-Design.com
1954 3106 Carryall Suburban
1954 3104 5-window pickup w/Hydra-Matic
The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.