Andrews TW37 Cams for 1999-2006 Harley Twin Cam

Product Description

Andrews TW37B Chain Drive Cam Set for Harley Twin Cam

Upgrade your early Harley-Davidson Twin Cam with the Andrews TW37B Chain Drive Cam Set. Designed as a hot street cam for 88ci and 95ci engines, the TW37B delivers a broad torque curve with stronger midrange and upper-rpm performance while maintaining a smooth, street-friendly idle.

With .510" intake and exhaust lift and a power range of approximately 2,200-5,800 rpm, the TW37B works especially well with low-restriction exhaust systems and performance-oriented street builds. The cams are compatible with carbureted and fuel-injected engines and can be used with stock valve springs and hydraulic tappets on properly set up applications.

Fitment

• Fits 1999-2006 Harley-Davidson Twin Cam models with the early chain-drive cam system
• Fits select Harley-Davidson Touring, Softail and Dyna models
• Does not fit 2006 Harley-Davidson Dyna models, which use the later cam drive configuration
• Designed for carbureted and fuel-injected Twin Cam engines
• Compatible with stock Harley-Davidson hydraulic lifters
• Compatible with stock valve springs
• 1999 Twin Cam applications require a splined cam drive sprocket
• 1999 Sprocket Requirement: Harley-Davidson OEM #25716-99 or compatible replacement
• Installer must verify coil bind, valve-to-valve clearance and valve-to-piston clearance during installation

Features

• TW37B performance camshaft grind
• Hot street cam designed for 88ci and 95ci Twin Cam engines
• Smooth idle with a broad torque band
• Strong midrange and upper-rpm performance
• Works especially well with low-restriction exhaust systems
• Approximately 2,200-5,800 rpm power range
• Compatible with stock valve springs and hydraulic tappets
• Works with carbureted and fuel-injected engines
• CNC-ground performance cam profiles
• Manufactured from high-quality alloy steel billets
• Heat treated for strength and durability
• Includes front cam support plate bearing
• Made in the USA
• Andrews Part Number: 288137

Specifications

• Manufacturer: Andrews Products
• Part Number: 288137
• Grind: TW37B
• Drive Type: Chain Drive
• Intake Timing @ .053": 18° / 38°
• Exhaust Timing @ .053": 46° / 14°
• Intake Lobe Centerline: 100°
• Exhaust Lobe Centerline: 106°
• Intake Duration @ .053": 236°
• Exhaust Duration @ .053": 240°
• Intake Valve Lift: .510"
• Exhaust Valve Lift: .510"
• Intake Lift at TDC: .174"
• Exhaust Lift at TDC: .148"
• Valve Springs: Stock Compatible
• Recommended Engine Size: 88ci-95ci
• Power Range: Approximately 2,200-5,800 rpm
• 1999 Sprocket Requirement: Harley-Davidson OEM #25716-99