97-2013 Corvette, 10-15 Camaro & Others, Spring, Retainer, Seat, Seals and Lock Kit for .660" Max Lift GM LS, Part 144317-1

97-2013 Corvette, 10-15 Camaro & Others, Spring, Retainer, Seat, Seals and Lock Kit for .660" Max Lift GM LS, Part 144317-1

Offering an easy solution for matching springs to your camshaft, this kit for '97+ GM LS engines includes our 144838-16 springs, 144944-16 retainers, 144460-16 seats, 99818-16 seals and 99108-1 locks. Handles .660" valve lift.

Valve Spring Kit, Dual Springs, Steel Retainers, Locks, Kit

Number of Springs Per Valve: Dual

Valve Spring Style: Standard

Valve Stem Diameter (in): 0.314 in.

Valve Stem Diameter (mm): 7.97mm

Retainers Included: Yes

Retainer Material: Steel

Locks Included: Yes

Lock Style: 7 degree

Lock Groove Quantity: 1-groove beadlock-style

Lock Material: Steel

Outside Diameter of Outer Spring (in): 1.297 in.

Coil Bind Height (in): 1.060 in.

Damper Spring Included: No

Spring Rate (lbs/in): 408 lbs./in.

Inside Diameter of Outer Spring (in): 0.917 in.

Inside Diameter of Inner Spring (in): 0.667 in.

Valve Springs Coated: No

Valve Stem Seals Included: Yes

Valve Guide Diameter (in): 0.500 in.

Quantity: Sold as a kit.

Notes: Fits 8mm valve stems. For use with LS hydraulic roller camshafts.                                                  

Ideal for modern and classic muscle, cruisers, street rods and street/strip applications

Grinds that fit a variety of applications: daily drivers to hot street/strip cars.

Ideal for street rods, muscle cars and some street/strip applications, the PowerMax series offers a substantial increase in performance. With a modern lobe profile and a focus on providing more area under the curve, the PowerMax line gives classic and modern cars a sizable power increase without sacrificing durability.

Designed for all-out power.