Left side engine case is sand cast as original, number boss is blank. The case accepts 1940-1954 case bushing.
Serial number pad for 1936-47 is 5/16" wide and 2-1/4" long, and the 1936-42 pads feature a line between the pad and the case. Case must be fit to builder's right hand case. Deck height must be milled to fit. Accepts 61" flywheels. Case set required line lapping of the main case races. Order case race available separately. Baffles cast in at cylinder base area. *NOTE: Left side cases accept standard case race.
10-0825