All 235 and 261 truck engines used mechanical lifters, including Hydra-Matic-equipped trucks ("hydra" not "hydro").

A Jerry posted above, all Powerglide-equipped cars had 235 engines with hydraulic lifters, except for the 1953-55 Corvette 235 engines, which had solid lifters (and the 2-speed Powerglide transmission).

Also, all 235 car engines from 1956 onwards used hydraulic lifters.