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Howards Cams Pro-Alloy Mechanical Roller Valve Springs
When only the best will do! Howards Cams™ took their state-of-the-art Pro-Alloy roller valve springs one step further. Each of these springs are electro polished which enhances the material even further. By reducing localized stress areas, these springs offer even greater life expectancy. Each spring is coiled using the most advanced CNC winders in the industry. Each spring is then parallel ground, stress relieved and deburred. They are then shot-peened and heat-treated to our own very specific standards. These high standards are what it takes for a longer spring life even in rough racing environments. Unconditionally guaranteed against breakage for one year! Just return the broken spring and we'll replace it, no questions asked. Sets of 16.
Part Type: Pro-Alloy Mechanical Roller Valve Springs
Style: Performance Valve Springs
Type: Dual with Damper
Damper Included: Yes
Outer Spring Out Side Diameter (O.D.): 1.540"
Outer Spring In Side Diameter (I.D.): 1.115"
Inner Spring Out Side Diameter (O.D.): 1.025"
Inner Spring In Side Diameter (I.D.): .730"
Seat Pressure: 215 @ 1.950"
Open Pressure: 575 @ 1.230"
Valve Spring Rate: 510
Maximum Suggested Lift: .700"
Coil Bind: 1.190"
Electro Polished: Yes
Nitrided: No
Suggested Steel Retainers: NA
Suggested Titanium Retainers: 97220
Suggested Seat Cups: 96015
Suggested Locators: 96031
Manufacturer: Howards Cams & Racing Components
Manufacturer's Part Number: 98637
Packaged Weight: 3.0 lbs.
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold in Sets of 16
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