Ford V8 & Inline 6 Firing Order Diagrams - 351/400, Other V8s, 6 Cylinder

This schematic shows spark plug wire routing and firing order diagrams for three Ford engine families, each drawn as a top view of the engine with fan, distributor cap, and spark plug wire paths. The first diagram, labeled 'All V8 except 351, 400 V8', shows firing order 1-5-4-2-6-3-7-8 with the distributor cap terminal layout and the routing of each plug wire from cap tower to cylinder. The second diagram, labeled '351 and 400 V8', shows firing order 1-3-7-2-6-5-4-8 with its corresponding cap layout and wire routing. The third diagram, labeled 'All 6 cylinder', shows firing order 1-5-3-6-2-4 for the inline six, with plug wires running from the distributor to cylinders 1 through 6 along the head, plus an enlarged distributor cap detail showing tower positions. Each cap drawing marks the locations of the two retaining CLIPs, which help orient the cap correctly. A reader can use this document to identify the correct firing order for their engine, determine which distributor cap tower connects to which cylinder, and route or re-route spark plug wires correctly after cap or wire replacement. The document itself gives no year, make, or part numbers, though it was filed with a 1990 Ford Bronco.