ANDREWS CHAIN DRIVEN CAMS from Drag Specialties / Fatbook

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ANDREWS CHAIN DRIVEN CAMS



	Andrews Products grinds its cams using 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 used. The power in a Harley Twin Cam engine is completely released only when superior Andrews computer-designed high-performance cams are installed. Cams come with new bearings (1 roller and 1 ball). Andrews recommends using their steel cam drive sprocket DS-199175 and crankshaft cam drive sprocket DS-199074 (must be purchased separately) TW21 GRIND CAMS Bolt-in cam with more torque at low and middle prm range (1,700-5,200 rpm) Similar to EV23 for heavy bikes Work well with either fuel-injection or carburetor Can be used with stock valve springs and tappets TW26A GRIND CAMS Bolt-in cams for low rpm torque and two-up touring Add more torque and horsepower at low and middle rpm range (1,800-5,500 rpm) Work well with either fuel-injection or carburetor Can be used with stock valve springs and tappets TW31S GRIND CAMS Great cams for motors with 9.8 to 10.2 compression ratio Lower TDC lift for easy installation Similar to TW37 with different timing (2000-5600 rpm power range) Can be used with stock springs and tappets TW32H GRIND CAMS High lift version of 31H Much more power thru rpm range with 10:1+ compression pistons (2,800-5,600 rpm) TW37B GRIND CAMS Bolt-in cams for 88”,95” or 96” motors Smooth idle, broad torque band Run best with low restriction exhausts (2,200-5,800 rpm) Work well with either fuel-injection or carburetor Can be used with stock valve springs and tappets TW44 GRIND CAMS Bolt-in cams for motors with 9.5:1 compression ratio or higher Maximum torque and horsepower at middle and upper rpm range (2,400-6,000+ rpm) Work best with carburetor Can be used with stock valve springs and tappets TW50 GRIND CAMS Maximum torque and horsepower at higher rpm ranges For lighter bikes and engines with a 9.5 compression ratio or higher (2,600-6,000+ rpm) Can be used with stock valve springs and tappets 54H/TWH4 GRIND CAMS Designed for 96" and 102" motors with up to 10: 1 compression ratio Cams work best at rpm range of 2200-5600 TW55 GRIND CAMS Maximum torque and horsepower at higher rpm ranges (2,600-6,000+ rpm) Designed for engines with 9.5:1 compression ratio or higher Coil bind should be checked; can be used with stock tappets TW60A GRIND CAMS Require high-lift valve springs and collars Use with low restriction exhaust (2,400-6,000+ rpm) NOTES: 00-06 model cams use a splined cam drive sprocket. These cams will fit in the 1999 Twin Cam motor, but the splined cam drive sprocket OEM #25716-99 or DS-199175 must be used. Installer must check coil bind, valve-to-valve clearance and valve-to-piston clearance.