Milodon Performance Aluminum High Volume Water Pump for AMc has a standard rotation is made from aluminum, a high volume model for 304, 360, 401 engines Fits 304 engine 1973-79, 360 engine 1973-78 and 401 engine 1973-76 Uses a 58 inch shaft pilot, 1 34 inch inlet and has a 4 1316 inch hub height