Proflow's High Performance valve springs for the LS Engine. When you upgrade the cam, you need to upgrade valve springs to match.  Micro-engineered surface finish for maximum durability, Multilayer fatigue enhancement, eliminating potential surface defects and prolonging spring life, Proprietary heat-treat process for added strength and optimized residual stress, Beehive and conical spring geometries, reducing dynamic surges for exceptional valvetrain harmonics

  • Valve Springs Series: Performance Valve Springs
  • Number Of Coils: Single Spring
  • Damper Spring: No
  • Overall Diameter: 1.030, 1.286 in.
  • Inside Diameter: 0.650 0.918 in.
  • Seat Pressure: 135 lbs. @ 1.800 in.
  • Open Pressure: 410 lbs. @ 1.170 in.
  • Coil Bind: 1.170 in.
  • Spring Rate (lbs./in.): 410 lbs/in.
  • Quantity: Sold As Set (16/pkg)

More From This Category

Proflow Muffler, 2.25 in, Black Compact Flow Chamber II, Side Inlet To 2.25 in. Centre Outlet, 9.75" x 13" x 4" body, Each

Proflow Muffler, 2.25 in, Black Compact Flow Chamber II, Side Inlet To 2.25 in. Centre Outlet, 9.75" x 13" x 4" body, Each

$156.28

Proflow Aluminium Tube Nut AN For 3/4in. Tube, Silver

Proflow Aluminium Tube Nut AN For 3/4in. Tube, Silver

$24.23

Proflow U-Joint, Steering, Forged Steel, Black, 3/4 in. DD, 1 in. DD, Each

Proflow U-Joint, Steering, Forged Steel, Black, 3/4 in. DD, 1 in. DD, Each

$64.68