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Howards Cams, Grand National Street Roller Springs
Designed for street/strip mechanical roller applications where lift does not exceed .580”. Used in many Chevrolet SB applications with stock length valves. Aircraft chrome silicone, heat-treated, dual with damper. CNC coiled and heat-treated. Sets of 16.
Part Type: Grand National Street Roller Springs
Style: Max Effort
Type: Dual with Damper
Damper Included: Yes
Outer Spring Out Side Diameter (O.D.): 1.437"
Outer Spring In Side Diameter (I.D.): 1.080"
Inner Spring Out Side Diameter (O.D.): 1.015"
Inner Spring In Side Diameter (I.D.): .731"
Seat Pressure: 185 @ 1.750"
Open Pressure: 365 @ 1.250"
Valve Spring Rate: 335
Maximum Suggested Lift: .590"
Coil Bind: 1.100"
Electro Polished: No
Nitrided: No
Suggested Steel Retainers: 97128
Suggested Titanium Retainers: 97220
Suggested Seat Cups: 96005
Suggested Locators: 96031
Manufacturer: Howards Cams & Racing Components
Manufacturer's Part Number: 98431
Packaged Weight: 3.0 lbs.
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold in Sets of 16
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