So was able to get down to the shop tonight. Looks like the date for the block is April 26, 1956. . Also pulled the cover to the lifter gallery and it does have the solid lifters. Thanks for all your input.
Jeff 1964 Chevrolet K10 Fleetside "A Kid's First Truck" Follow in the DITY 1951 Chevrolet 3100 Follow his build in the Project Journals 1969 Chevrolet Camaro Convertible | 2020 Chevrolet Silverado | 3500 Duramax | 2021 GMC Sierra Denali USAF Veteran 1983-1987 | PSP retired 1990- 2012