Ford 300ci 4.9L I6 Firing Order & Spark Plug Wire Routing Diagram

This schematic shows the spark plug wire routing and firing order layout for the Ford 300 cubic inch (4.9L) inline six-cylinder engine. The main drawing depicts the six cylinders numbered 1 through 6 from front to rear, with heavy lines representing the spark plug wires running from each cylinder down to the corresponding terminal on the distributor cap. The distributor cap is drawn from above with its six terminals labeled (6, 2, 4, 1, 5, 3 around the cap) and an arrow at the center indicating rotor rotation direction. An inset at the upper left shows the crankshaft timing indicator, with a degree scale reading from 14° BTDC through 10°, 8°, 6°, 4°, 2°, down to 0° and ATDC, along with a FRONT arrow to orient the viewer. A reader can use this diagram to correctly route spark plug wires from the distributor cap to each cylinder on a 4.9L/300ci straight-six, verify distributor cap terminal-to-cylinder assignments, and identify the base timing marks on the crankshaft pulley/timing indicator. The image carries a 'Steve83' watermark and gives no explicit year or model applicability beyond the engine designation.