Description
Manley’s SBC S/D exhaust valves are engineered for high-RPM, high-heat applications where stock valves simply won’t survive. Built from stainless steel and spec’d for severe duty use, these valves deliver reliable sealing and consistent performance across extended racing sessions. If you’re running a serious Small Block Chevy platform, upgrading to purpose-built exhaust valves is non-negotiable for durability and peak cylinder head efficiency.
- Exhaust valve application
- Severe duty rated
- 1.600 in head diameter
- 0.342 in stem diameter
- 5.036 in total length
- Stainless steel construction
- Small Block Chevy compatible
- Set of 8 valves
- Manley part #11539-8






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