Description
This Manley Extreme Duty Pro Flo intake valve family is intended for Chevrolet LS1/LS2 w LS - 6 Head Small Block 1.600 / builds where valve dimensions need to be matched deliberately to the cylinder head, seat work, and valvetrain geometry. Use the exact Manley part number shown below to distinguish this product from similar valves offered for the same or related engine family.
For Chevrolet LS1/LS2 w LS - 6 Head Small Block 1.600 /, valve diameter changes can alter seat work and chamber/shrouding relationships, while alternate overall lengths can change installed height and rocker geometry.
Key Product Details
- Application: Chevrolet LS1/LS2 w LS - 6 Head Small Block 1.600 /
- Manley Series: Extreme Duty Pro Flo
- Valve Position: Intake
- Manufacturer Part Number: 11683-8
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
Before purchase, compare the selected valve dimensions with your head manufacturer or engine builder’s specification, including stem diameter, valve length, seat diameter, and keeper arrangement.
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.