FTI - HR650 Hydraulic Roller Dual Valve Spring Kit
The FTI HR650 valve spring kit features the popular small diameter, dual valve springs with required seat and open load pressures for most dual purpose hydraulic roller camshaft profiles with maximum lift of .650” at the valve. The dual valve springs used in the FTI HR650 kit contain the same components used in many of the current LS drop-in spring packages. This FTI HR650 valve spring kit comes complete and is ready to easily install into your LS heads.
This severe duty, spring package incorporates US manufactured lightweight chromemoly steel retainers, not overseas inferior pieces. Fully CNC machined for use in severe duty applications such as endurance, road racing and marine uses. Hardened and machined spring locators are included and accurately locate the spring assembly to the OEM .500" diameter valve guide, preventing scuffing on aluminum cylinder heads. High strength, 4140 alloy steel valve locks are provided for reliability. Premium quality, Viton steel shell valve stem seals are included for proper valve stem lubrication and oil control.
VALVE SPRING DATA:
- Outer spring outside diameter: 1.295"
- Inner spring inside diameter: 0.682
- Maximum recommended lift: .650"
- 160# at 1.800" Installed height
- 430# at 1.125" Open pressure
- Spring rate: 400#/inch
- Coil bind: 1.105"
Part Number: FTI-HR650-KIT
