Description
Built around the requirements of LS7 Small Block Chevrolet 1.615 Head Diameter / .3136 Stem Diameter, this Race Master exhaust valve family gives engine builders a focused way to select the dimensions their cylinder-head combination calls for. Use the exact Manley part number shown below to distinguish this product from similar valves offered for the same or related engine family.
If the LS7 Small Block Chevrolet 1.615 Head Diameter / .3136 Stem Diameter cylinder head has been ported, fitted with oversized seats, or changed from its original valvetrain layout, confirm the required valve measurements after machining rather than using a stock-size assumption.
Key Product Details
- Application: LS7 Small Block Chevrolet 1.615 Head Diameter / .3136 Stem Diameter
- Manley Series: Race Master
- Valve Position: Exhaust
- Product Family Detail: Race Series application focus
- Manufacturer Part Number: 11689-8
Package Quantity
Set of 8 valves. The selected configuration is supplied as a 8-piece valve package. This quantity applies to the selected Manley SKU family shown on this product page.
Selection & Fitment Notes
Confirm head diameter, overall length, stem diameter, keeper/groove style, seat compatibility, and installed-height requirements with your cylinder-head specification before ordering.
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.