Andrews EV51 Cam for 1984-1999 Harley Evolution Big Twin

Product Description

Andrews EV51 Camshaft for Harley Evolution Big Twin

Build stronger midrange and upper-rpm horsepower into your Harley-Davidson Evolution Big Twin with the Andrews EV51 Camshaft. Designed for modified street engines, the EV51 uses longer duration and .510" valve lift to extend the powerband while retaining hydraulic lifters for dependable street use.

The EV51 is best suited for performance-oriented Evolution engines with approximately 9.0:1 or higher compression. Its powerband runs from approximately 2,800 to 6,500 rpm, making it a strong choice for riders looking for improved upper-rpm performance beyond what milder Andrews Evolution cams provide. Because the EV51 uses a smaller-than-stock base circle, adjustable or properly sized longer pushrods are required.

Fitment

• Fits compatible 1984-1999 Harley-Davidson Evolution Big Twin models
• Also fits select 2000 Harley-Davidson FXR models equipped with the Evolution Big Twin engine
• Fits select FXR, Dyna, Softail and Touring models equipped with Evolution Big Twin engines
• Designed for modified street engines with approximately 9.0:1 or higher compression
• Designed for use with hydraulic lifters
• Requires a minimum of .560" valve spring travel
• Andrews high-lift valve springs or an equivalent properly set up valvetrain are recommended
• Smaller-than-stock cam base circle requires adjustable pushrods or properly sized longer fixed-length pushrods
• Some applications may require clearance at the engine case bearing boss for the rear intake cam lobe
• Does not fit Twin Cam engines
• Installer must verify valve spring coil bind, valve-to-valve clearance, valve-to-piston clearance and cam-to-case clearance during installation

Features

• EV51 performance camshaft grind
• Designed for modified street Evolution Big Twin engines
• Strong midrange and upper-rpm horsepower
• Approximately 2,800-6,500 rpm power range
• Recommended for approximately 9.0:1 or higher compression
• .510" intake and exhaust valve lift
• Longer-duration profile for improved upper-rpm performance
• Designed for hydraulic lifters
• Requires .560" minimum valve spring travel
• Smaller-than-stock base circle requires compatible pushrods
• Made in the USA
• Andrews Part Number: 291151

Specifications

• Manufacturer: Andrews Products
• Part Number: 291151
• Grind: EV51
• Intake Timing @ .053": 28° / 44°
• Exhaust Timing @ .053": 54° / 22°
• Intake Duration @ .053": 252°
• Exhaust Duration @ .053": 256°
• Intake Valve Lift: .510"
• Exhaust Valve Lift: .510"
• Intake Lift at TDC: .233"
• Exhaust Lift at TDC: .195"
• Minimum Spring Travel: .560"
• Valve Springs: Andrews High-Lift or Equivalent Setup Required
• Lifters: Hydraulic
• Recommended Compression: Approximately 9.0:1 or Higher
• Power Range: Approximately 2,800-6,500 rpm
• Quantity: 1 Camshaft