I think LEA is a 1953 6000-series (2-ton) Flint-built 235 "Loadmaster" engine serial prefix... So if that is correct you have a 235 with 18 head bolts, a 216-style valve cover with 2 acorn nuts on top, short side cover, cast iron pistons, solid lifters and the last 235s with babbited rods, oil dippers and spray nozzles in the pan.
