BBC E/D 1.880 Exhaust Valves 11/32 +.100

The BBC E/D 1.880 Exhaust Valves 11/32 +.100 from MANLEY are precision-engineered components designed for serious big-block Chevrolet engine builders and performance enthusiasts. These valves are specifically made for high-displacement BBC (Big Block Chevrolet) applications that require enhanced flow characteristics and durability under extreme combustion pressures. Whether you're building a street performance engine, competition platform, or high-horsepower rebuild, these exhaust valves deliver the reliability and flow efficiency that separates a well-engineered build from a mediocre one.

The 1.880-inch head diameter combined with the 11/32-inch stem diameter provides optimal flow area while maintaining structural integrity under sustained high RPM operation and thermal cycling. The +.100 dimension indicates that these valves are longer than standard lengths, which is crucial for specific intake and exhaust port matching, ensuring proper seating geometry and valve guide clearance. MANLEY valves are manufactured from premium stainless steel alloys with advanced heat treatment protocols that resist oxidation, corrosion, and thermal fatigue—critical factors in BBC engines that operate at elevated temperatures and aggressive valve timing.

These exhaust valves are essential for BBC E or D series cylinder head configurations and pair seamlessly with OEM or aftermarket valve train components. Their precise stem tolerance and head concentricity minimize leakage and promote consistent engine timing across all cylinders. Performance enthusiasts will appreciate the quality and engineering that goes into each valve, making them a vital choice for any serious engine build.