Katech LS .650 Lift Beehive Valve Spring Kit with Tool Steel Retainers

Katech LS .650 Lift Beehive Valve Spring Kit with Tool Steel Retainers

PSI Max Life Beehive Springs with Hardened H13 Tool Steel Retainers for Compatible LS Cylinder Heads.

The Katech LS .650 Lift Beehive Valve Spring Kit with Tool Steel Retainers combines PSI-1511ML valve springs, Katech H13 tool steel retainers, steel spring locators, and Viton valve seals. It is designed as a drop-in spring package for most compatible 15-degree LS cylinder heads and LS7 heads.

The springs feature PSI's Max Life treatment. The hardened H13 retainers address spring-contact wear associated with titanium retainers in evaluated Katech valvetrain packages. All kit components are made in the USA.

Features & Benefits

• PSI-1511ML Beehive Valve Springs with Max Life Treatment
• Hardened H13 Tool Steel Retainers
• Increased Spring-Contact Wear Resistance Compared with Titanium Retainers in Evaluated Katech Packages
• Retainers Lighter Than the Referenced OEM Components
• Steel Spring Locators
• Viton Valve Seals
• All Kit Components Made in the USA

Technical Specifications

• Product Type: Beehive Valve Spring Kit
• Spring Model: PSI-1511ML
• Listed Valve Lift: .650 Inch
• Spring Pressure at 1.800-Inch Height: 130 LBS
• Spring Pressure at 1.150-Inch Height: 380 LBS
• Coil Bind Height: 1.100 Inches
• Retainer Material: Hardened H13 Tool Steel
• Locator Material: Steel
• Valve Seal Material: Viton

What's Included

• Sixteen PSI-1511ML Beehive Valve Springs
• Sixteen Katech Extreme Duty H13 Tool Steel Valve Spring Retainers
• Sixteen Katech Steel Spring Locators
• Sixteen Katech Viton Valve Seals

Valve locks are not included. This kit requires compatible OEM GM valve locks.

Engine & Cylinder Head Fitment

• Most Compatible GM LS Cylinder Heads with a 15-Degree Valve Angle
• Compatible GM LS7 Cylinder Heads

Exclusion: This kit does not fit LS9 cylinder heads.

Confirm valve dimensions, guide configuration, and installed height before ordering. Aftermarket heads or modified valve arrangements may require a different component combination.

Retainer Material Selection

Katech recommends the appropriate tool steel retainers for street, road racing, and endurance applications. Titanium remains Katech's recommendation for drag racing.

Installation & Compatibility Notes

• Use Compatible OEM GM Valve Locks
• Inspect Existing Valve Locks for Wear or Damage
• Verify Spring Locator and Valve Seal Fit
• Measure Installed Height at Each Valve
• Check Spring Pressures Against the Camshaft Requirements
• Verify Coil Bind Clearance at Actual Maximum Valve Lift
• Check Retainer-to-Seal and Retainer-to-Guide Clearance
• Verify Piston-to-Valve Clearance for the Completed Engine Combination

The .650-inch lift designation does not establish clearance for every installation. Actual usable lift depends on installed height, coil bind clearance, and the complete valvetrain configuration.

Why Choose Katech

The Katech LS .650 Lift Beehive Valve Spring Kit with Tool Steel Retainers brings the supporting spring components together with a retainer material selected for wear resistance. Published pressures and coil bind height help builders assess the package against the camshaft and operating requirements of their engine.

For cylinder head, camshaft, and spring package compatibility questions, contact .