Description
When you’re pushing your Small Block Chevy to its limits, stock exhaust valves become the bottleneck—literally. Manley’s Severe Duty exhaust valves are engineered to handle sustained high RPM abuse, extreme temperatures, and aggressive valve spring pressures that would cause lesser valves to fail. Built from stainless steel and precision-manufactured to exact tolerances, these valves ensure reliable flow and durability whether you’re on the strip, the track, or the dyno.
- Severe Duty rated
- 1.625″ head diameter
- 0.342″ stem diameter
- 5.565″ overall length
- Stainless steel construction
- Small Block Chevy fitment
- Set of 8 valves
- Precision CNC-machined






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