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Andrews Products Grinds Its Cams With the Help of a Computer With Cam Design Capabilities. This Superior Technology Gives the Utmost in Both Performance and Reliability. Only the Best Alloy Steel Billets and Heat-Treating Processes Are Utilized. Furthermore, the Power in Harleys Evolution Engines Can Be Made Even More Convincing When a Superior Andrews Computer-Designed High-Performance Cam Is Installed. These Hydraulic Lifter Cams Are Capable of 6,000-Plus Rpm With Stock Springs and No Valve Float.EV7 EVOLUTION CAMDesigned for Big-Inch Stroker Motors With Head WorkWorks With Stock Hydraulics, With Stock Spring Travel Set to .560 MinimumExcellent in the 2,800-6,500 Rpm RangeUses Stock SpringsFits All 1984-1999 Harley Davidson Evolution Big Twin Models (Excludes 1999 Twin Cams)Made in the USASold IndividuallyINTAKEOpen (In Degrees): 31Close (In Degrees): 55Duration at .053 (In Degrees): 266Valve Lift: .560EXHAUSTOpen (In Degrees): 59Close (In Degrees): 27Duration at .053 (In Degrees): 266Valve Lift: .560NOTE: It Is the Installer's Responsibility to Check Coil Bind and All ClearancesNOTE: The Image Displayed Is Representative of Andrews Cams, but May Vary Depending on Your Specific Model.