What is oil galley plug?
What is oil galley plug? An oil gellery plug is a plug (usually threaded) to fill a hole needed during manufacture of the engine. The hole in the oil gallery is drilled and then the end is plugged to keep the oil from falling out of the engine! What is the purpose of having oil gallery plugs in an engine block? It has to be drilled shallow because an oil gallery intersects close to the rear face of the engine. To allow the rear engine plate to fit flush the other rear (non distributer side) fore and aft gallery plug...