Kemps,
A passenger car 235 from around 1960 would most likely have hydraulic lifters, while a truck engine would most likely have mechanical lifters.
The best way to determine haydraulic/mechanical is to look at the lifters. The next best way is to find and post here the block casting number (on the block at the upper right of the starter motor - sometimes hard to see) and/or the engine "serial number/ID", which is pressed into the block on a ledge to the rear of the distributor.
If my locations for codes are wrong, or if there is a better way to answer your question, someone will most likely let us know,
Tim
