Howards Cams Performance Street/Strip Valve Springs are coiled and heat-treated in the finest facilities available. Howards research and development teams are constantly updating the Howards Cams Performance Street/Strip Valve Springs materials and manufacturing techniques, to provide the best possible valve springs.

Howards Cams pioneered many valve spring developments since the 1950’s, and are still working with the best engineers and race teams to be on the cutting edge of valve spring technology.

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Howards Cams

Howards Performance Street/Strip Valve Springs

Part #: 98111

1.240" Outside Diameter of Outer Spring 1.125" Coil Bind Height 335 lbs/in Spring Rate 0.860" Inside Diameter of Inner Spring

Howard Performance Street/Strip Valve Springs

Part #: 98212

SB Chevy 1.265 O.D., .875 I.D. Single w/Damp, Seat Pressure 115 @ 1.750, Open Pressure 340 @ 1.250, Rate 425, Coil Bind, 1.150 Max Lift .550*

Howards Performance Street/Strip Valve Springs

Part #: 98214

SB Chevy 1.250 O.D., .870 I.D. Single w/Damp, Seat Pressure 115 @ 1.700, Open Pressure 300 @ 1.250, Rate 411, Coil Bind, 1.160 Max Lift .500*

Howards Performance Street/Strip Valve Springs

Part #: 98412

1.445" Outside Diameter of Outer Spring 1.125" Coil Bind Height 347 lbs/in Spring Rate 1.040" Inside Diameter of Inner Spring

Howards Performance Street/Strip Valve Springs

Part #: 98432

1.437" Outside Diameter of Outer Spring 1.062" Coil Bind Height 300 lbs/in Spring Rate 0.760" Inside Diameter of Inner Spring

Howards Performance Street/Strip Valve Springs

Part #: 98515

1.510" Outside Diameter of Outer Spring 1.300" Coil Bind Height 350 lbs/in Spring Rate 1.110" Inside Diameter of Inner Spring