Description
For Small Block Chevrolet 1.600 Diameter +.400 Installed Height Extreme Alloy cylinder-head work, this Manley Extreme Duty exhaust valve listing groups the available dimensional choices under one application-specific product family. Use the exact Manley part number shown below to distinguish this product from similar valves offered for the same or related engine family.
The correct Small Block Chevrolet 1.600 Diameter +.400 Installed Height Extreme Alloy valve is the one that matches the finished head. Stem clearance, seat contact, installed height, spring package, and keeper location should all be checked during assembly.
Key Product Details
- Application: Small Block Chevrolet 1.600 Diameter +.400 Installed Height Extreme Alloy
- Manley Series: Extreme Duty
- Valve Position: Exhaust
- Manufacturer Part Number: 11711-1
Package Quantity
Sold individually. One valve is supplied per selected SKU. Order the intake or exhaust quantity required for the cylinder-head configuration being assembled. This quantity applies to the selected Manley SKU family shown on this product page.
Selection & Fitment Notes
Use the finished cylinder-head setup as the authority for selection. Oversize valves or alternate lengths may require machining and can affect installed height and valvetrain geometry.
Professional engine assembly and measurement are recommended. Product specifications should be confirmed against the selected Manley part number and the requirements of the exact engine build.