The block was made from 59 thru 61 which coincides with the date code. So we can safely say the block is a 261 forged in 1960. Look for the head code. It’s located on the head between the valve cover and the manifold on the drivers side. The date code for the head is under the valve cover on the passenger side.
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
