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Charts & Guides for Part Number TFS-16306-16
Trick Flow® by PAC Racing Dual Valve Springs
Valve Springs, PAC Racing, Dual, 1.275 in. Outside Diameter, 450 lbs./in. Rate, 1.080 in. Coil Bind, Set of 16
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Estimated Ship Date: Monday 4/6/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
TFS-16306-16
Part Type:
Product Line:
Summit Racing Part Number:
TFS-16306-16
UPC:
842645100390
Valve Spring Style:
Standard
Number of Springs Per Valve:
Dual
Retainers Included:
No
Outside Diameter of Outer Spring (in.):
1.275 in.
Coil Bind Height (in.):
1.080 in.
Damper Spring Included:
No
Spring Rate (lbs./in.):
450 lbs./in.
Inside Diameter of Outer Spring (in.):
0.891 in.
Inside Diameter of Inner Spring (in.):
0.675 in.
Locks Included:
No
Valve Stem Seals Included:
No
Valve Springs Coated:
No
Quantity:
Sold as a set of 16.
Notes:
GM LS cylinder head upgrade springs.
Installed Height (in.):
1.800 in.
Seat Pressure at Installed Height (lbs.):
150 lbs.
Open Height (in.)(application):
1.200
Open Pressure (lbs.):
420 lbs.
Remanufactured:
No
Trick Flow® by PAC Racing Dual Valve Springs
Valve springs compress and rebound hundreds of times a second. Make sure your next set of valve springs are built to last—and built to win! Trick Flow® by PAC Racing dual valve springs are specifically designed for cams with aggressive profiles, and are available with damper coils for extra spring surge prevention. PAC springs are CNC coiled from high tensile-strength, extra-durable Pacaloy chrome-silicon steel and double shot-peened beyond Aerospace Material Specifications (AMS) reliability standards.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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