Small Block Ford V8 Header Firing Pattern Diagram - Cylinder Tube Layout

This document is a simple hand-drawn schematic showing the cylinder-number arrangement of the header collector tubes on a V8 engine, viewed from the back of the headers looking forward toward the front of the vehicle. Two circles represent the two header collectors. The driver's side collector shows tubes for cylinders 5 and 8 on top and 6 and 7 on the bottom, with a curved arrow sweeping around the collector indicating the firing/rotation direction. The passenger side collector shows tubes for cylinders 4 and 1 on top and 2 and 3 on the bottom, also with a curved directional arrow. The caption reads 'Back of headers looking forward.' The diagram was uploaded to a 1990 Ford Mustang gallery under the filename 'Header Firing Pattern.jpg,' suggesting it illustrates how the firing order progresses through the header tubes on a small-block Ford V8. A reader can learn which cylinder feeds which tube position in each collector and the direction the firing sequence travels around each collector, which is useful when building or routing headers, diagnosing exhaust pulse arrangement, or verifying tube-to-cylinder assignments. The document itself contains no year, model, engine displacement, or part number information.