6) Adjacent to the oil filter cap (1/8" plug)Bill V in Md":24k0vstr said:There are five oil galley openings, but only four have plugs. One of the plugs is 1/4" npt and all others are 1/8". Location and size of opening/plugs are as follows:
1) Behind front engine timing cover, upper left of camshaft hole (1/4" plug)
2) Behind valve cover, between cylinders 3 & 4 (1/8" plug)
3) Behind carburetor (1/8" plug)
4) Back of engine block, above flywheel (1/8" plug)
5) Under oil filter cap, near the top (no plug)