Exhaust Valve

The Ford Exhaust Valve (M-6505-B304) is a precision stainless steel replacement exhaust valve engineered for Small Block Ford engines. This single valve features a 1.600-inch head diameter, 11/32-inch valve stem, and measures 5.365 inches in overall length. Built from stainless material, it delivers corrosion resistance and extended service life in high-temperature exhaust environments where standard steel valves degrade rapidly.

The 1.600-inch head diameter is engineered to seal properly within Small Block Ford combustion chamber geometry, ensuring optimal gas containment and preventing blow-by that would otherwise compromise cylinder pressure and power output. The 11/32-inch stem diameter is the OEM specification for Small Block applications, guaranteeing proper fit in original valve guides without enlargement or custom machining. At 5.365 inches long, this valve maintains factory proportions critical for correct installed height, valve train geometry, and rocker arm alignment. Stainless construction resists the corrosive byproducts of fuel combustion and exhaust gas exposure far longer than standard iron valves, making it suitable for both street and racing applications where durability matters.

This exhaust valve is intended for engine builders, restoration specialists, and performance enthusiasts rebuilding or repairing Small Block Ford cylinder heads. Common scenarios include addressing burnt exhaust valves, restoring vintage or classic Ford engines to original specification, upgrading to superior stainless material during a top-end rebuild, or replacing a single valve without requiring a full set replacement. The individual piece format allows targeted repair when only the exhaust valve requires service, reducing project costs compared to multi-valve kits.

Small Block Ford engines remain one of the most widely produced and modified V-8 powerplants in automotive history. OEM-specification replacement valves like this stainless exhaust valve ensure that rebuilt heads function at factory-intended performance levels and durability standards. Whether used in a stock restoration, mild street build, or race preparation, using the correct valve specification maintains engine reliability and combustion chamber efficiency.