Two used Flathead Ford Mercury 4" Stroke Crankshaft; these two need regrind, should clean at .020/.020 or offset ground to 4 1/8" stroke at .020/STD 1.998"; have not been cleaned.

One used 4" c/s is at 10-10 and might run at that size without grind after clean and polish.

Each of these cranks need to have the sludge plugs removed and to be cleaned properly before use