Feature:
1. According to the original factory specifications, a perfect match for the original car.
2. Own different test machines to design exact accurate parameters for our products. All switches were tested for performance.
3. Made by high-quality material, lightweight, anti-rust, colorfast and durable.
4. Stable performance, high reliability, suitable for replacing your broken one.
5. The Spring Kit is a drop-in high-performance spring kit for all LS cylinder heads and is rated for up to .625" lift.
6. This spring kit uses all hardware, including seats, retainers, and locks, and is 100% drop-in.
7. The springs are an ovate beehive spring that has increased loads, rates, and frequencies for more aggressive cams.

Fitment:
Fit For All LS Engines - .625" Lift Rated.
Fit for LS1, LS2, LS3, LS6, LQ4, LQ9, 4.8, 5.3, 5.7, 6.0, 6.2, Silverado, Sierra, Camaro, Corvette, TBSS, CTS-V, GTO, LM7, GM Truck

Specs:
Outside Diameter of Outer Spring (in): 1.307 in.

Number of Springs Per Valve: Single
Coil Bind Height (in): 1.100 in.
Damper Spring Included: No
Recommended Valve Lift: 0.625 in
Install Load: 135lbs
Install Height: 1.800"
Open Height: 1.175"
Open Load: 348 lbs
Spring Rate (lbs/in): 340 lbs./in.
Inside Diameter of Outer Spring (in): 0.885 in.
Valve Spring Style: Beehive

Package Includes:
16X Beehive Valve Spring

1XValve Spring Compressor Tool Set
4X Trays bolts