Rollin thunder performer RPM cams feature more aggressive profiles than conventional cams without excessive valve overlap and provide power from 1500 to 6500 RPM. They are used in our 435 Horsepower and 440 Horsepower E-Tec crate engines, our 460 Horsepower signature series 383 crate engine and our 650 Horsepower and 675 Horsepower 555 crate engines. Roller tappets reduce friction, virtually eliminate Break-In problems, and permit higher valve velocities for increased performance. Intended for use with OEM or Edelbrock hydraulic roller tappets
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Warranty
Engine Compatibility: Ford Windsor Small Block 4.9L-5.0L/ 289-302 Cubic Inch
Type: Hydraulic Roller
RPM - High: 6500
RPM - Low: 1500
Intake Duration At 0.050 Inch Lift (DEG): 227 Degree
Exhaust Duration At 0.050 Inch Lift (DEG): 234 Degree
Advertised Intake Duration (DEG): 298 Degree
Advertised Exhaust Duration (DEG): 302 Degree
Intake Valve Lift (IN): 0.52 Inch
Exhaust Valve Lift (IN): 0.52 Inch
Lobe Separation Angle (DEG): 112 Degree
Intake Centerline Angle (DEG): 107 Degree
Computer-Controlled Compatible: No
Features
Rollin Thunder Performer RPM Cams Feature More Aggressive Profiles Than Conventional Cams Without Excessive Valve Overlap And Provide Power From 1500 To 6500 RPM
Roller Tappets Reduce Friction, Virtually Eliminate Break-In Problems And Permit Higher Valve Velocities For Increased Performance
Limited 1 Year Warranty