Trick Flow® by PAC Racing Dual Valve Springs TFS-16905P-16

Valve Springs, Dual, Nano Peened Double Platinum, 160 lbs. Seat Pressure. 425 lbs. Open at .670 Lift. LS1, LS6, LS2, LS3, LQ4, LQ9, L92, Set of 16

Part Number:
Part Type:
Valve Spring Style:
Number of Springs Per Valve:
Outside Diameter of Outer Spring (in):
1.304 in.
Coil Bind Height (in):
1.015 in.
Damper Spring Included:
Spring Rate (lbs/in):
392 lbs./in.
Inside Diameter of Outer Spring (in):
0.950 in.
Inside Diameter of Inner Spring (in):
0.694 in.
Valve Springs Coated:
Sold as a set of 16.
Commonly used with Chevy Gen. 3 and 4 LS Engines. Fits cathedral port , and rectangle port with the exception of the LS9. Can be used with LS7 with .045 spring shims.

Trick Flow by PAC Racing Dual Valve Springs are manufactured to Trick Flow’s rigorous, world-class standards. Every spring is CNC coiled from high tensile-strength, extra-durable Pacaloy™ chrome-silicon steel and double shot-peened beyond Aerospace Material Specifications (AMS) reliability criteria. These dual PAC springs are specifically designed for cams with aggressive profiles, and are available with damper coils for extra spring surge prevention.


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Trick Flow Specialties TFS-90306 - Trick Flow® Valve Spring Compressors

Valve Spring Compressor, Cathedral Port LS Cylinder Heads, Cylinder Head On, Steel, Chevy, Each


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