Description
If you’re running a high-revving small block with aggressive cam timing and extended valve events, factory exhaust valves will fail under sustained load. Manley’s severe-duty construction handles the thermal stress and mechanical abuse that competition demands, keeping your engine reliable through long race weekends or dyno sessions.
These stainless steel valves are engineered for forced induction and radical builds where standard components simply can’t survive. With a proven track record in professional racing applications, you get the durability to support your power goals without compromise.
- Manley severe-duty construction
- 1.600in exhaust head
- 0.342in valve stem
- 5.165in overall length
- Stainless steel material
- Small Block Chevy compatible
- Small Block Ford compatible
- Set of 8 valves
- MPN: 11751-8









