No sure what I have ! 1962 235 stamped # by dist. FO4I6JC casting # (from the rear casting #) CON3 D150 GM 3769716 Thanks for the help in advance. (or a place I can go for info. Hyd or solid lifters?

That engine was used in the early '60's and either solid or hydraulic lifters can be used....but a solid lifter cam must be used with solid lifters or a Hyd. lifter cam with Hyd. lifters.