This engine is a later 6 from about 1970, so its a 230 or 250. He OP said he determined it’s not a 292. Previous posters have asked to post the numbers but he had trouble reading them.
Phil Moderator, The Engine Shop, Interiors and Project Journals
1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes Project Journals Stovebolt Gallery Forum