www.zodiac.nl 07-061 Open Close Duration@.053" Lift Valve Lift Lift@TDC Springs 21G Intake 10° 30° 220° .498" .134" Stock Exhaust 40° 08° 228° .498" .121" 26G Intake 11° 35° 226° .490" .138" Stock Exhaust 41° 09° 230° .490" .112" 31G Intake 10° 46° 236° .510" .131" Stock Exhaust 52° 08° 240° .510" .120" 37G Intake 14° 42° 236° .510" .151" Stock Exhaust 48° 12° 240° .510" .140" 50G Intake 20° 48° 248° .510" .184" Stock Exhaust 54° 18° 252° .510" .168" 55G Intake 22° 46° 248° .550" .197" Stock Exhaust 52° 20° 252° .550" .181" 59G Intake 29° 57° 266° .590" .238" Hi-Lift Exhaust 63° 27° 270° .590" .218" 60G Intake 24° 56° 260° .560" .205" Hi-Lift Exhaust 58° 22° 260° .560" .205" 64G Intake 30° 62° 272° .640" .262" Hi-Lift Exhaust 68° 32° 276° .640" .232" 67G Intake 24° 48° 252° .570" .209" Hi-Lift Exhaust 58° 22° 260° .570" .187" 67G GRIND 232518 Performance cams for 95 to 107 or even more Cubic Inches and 10.0 to 10.8 compression ratio and high-flow head set up (2600-6500+ RPM). 64G GRIND 730068 High lift cams for modified 95 inch motors running 10: 1 compression ratio or higher. Heads must be set up for .700" lift and modified for peak air flow (3000-6500+RPM). Note: The following 3 grinds are intended for highly tuned engines and require the knowledge of an expert engine builder for proper setup and installation. 60G GRIND 232517 For well-prepared 95 to 103 CI motors with 10.0 to 10.5 compression ratio 100+ HP is within reach (2700-6500+ RPM). 59G GRIND 730067 New grind for gear drive 95 inches with 10: 1 compression ratio or higher. Maximum torque and horsepower at middle and upper RPM ranges (2400- 6200+ RPM). 55G GRIND 730066 Great cam for 95 inch engines with 9.5: 1 compression ratio. Maximum horsepower and torque at mid and upper RPM (2600-6300+ RPM).Same specs as TW55 but with gear drive. 50G GRIND 232510 Designed for easy installation in 95 CI motors with stock heads and 9.5 to 9.8 compression ratio (2400-6000 RPM). 37G GRIND 730064 Twin Cams with this cam grind have shown 80+ rear wheel HP. Smooth idle, broad torque band. Same grind as TW37 but with gear drive (2200-5800 RPM). 31G GRIND 232506 Great cam for motors with 95 CI or more and 10: 1 compression ratio. Lower TDC lift for ease of installation (2000-5800 RPM). 26G GRIND 232500 Bolt-in cam for 88 thru 95 CI motors with stock compression ratio. Great for 2-up touring, this cam will add torque and HP at lower and middle RPM range (1800-5200 RPM). 21G GRIND 232498 Bolt-in cam for 88CI motors provide more torque for all around riding with heavy bikes. Intented for stock compression ratio and pistons. Comparable with Andrews EV23 cam in a 80 CI Evolution (1700-4800 RPM). After two years of testing and development, Andrews Products is offering cams for S&S gear drives for Twin Cam. The primary advantage is that the gear drives use less engine power to operate than stock chain drives. Dynamometer comparisons show gains of 4 horsepower over similar engines with chain driven cams. When less power is needed to turn the camshafts, more power gets to the rear wheel. For all out drag motors, there is also an additional advantage with gear drive cams. Simply stated, higher lift cams can be used with the gear drive setup. The reason for this requires some explanation. With chain drive 88 cams, valve lifts of .600 or higher will result in interference between front and rear cam lobes. With the gear drive cams, lobe top angles are different so lobe to lobe interference cannot occur. These cams are for use with S&S cam gear drive kit (ZPN721948). 2055 ANDREWS TWIN CAM CAMSHAFTS WITH GEAR DRIVE CAMS FOR TWIN CAM (Ȧ*ȡ1ȝ (Site 471)
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