Also, the easiest way to distinguish between a 265 and any other small block chevy is the valve covers, providing the heads are 265 heads. The bolts that hold the valve covers on are staggered on a 265, not symetrical like any other small block.
1949 Studebaker 2R16A 1961 Chevrolet Impala 1968 Chevrolet Corvette Roadster 1971 C10