1. All 216 engines (cars & trucks) had mechanical (solid) lifters.
2. All 235/261 truck engines had mechanical (solid) lifters - all years.
3. 1954 & 1955 Passenger cars with the high-pressure 235 and manual transmission continued to use mechanical lifters; in all years, Powerglide equipped passenger cars used hydraulic lifters.
4. All 1956-1962 235 Passenger car engines used hydraulic lifters.
