Andrews Products grinds its cams with the help of 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 utilized. Furthermore, the power in Harley’s Twin Cam engine can be made even more convincing when superior Andrews computer-designed high-performance cams are installed
21HG GRIND CAMS
Bolt-in cam for more torque with stock compression
Run best with low restriction exhausts (1700-5200 rpm)
Similar to the EV-23 cam
Cams work well with fuel injection or carburetor models
Can be used with stock valve springs and tappets
Works well with carbs or fuel injection
26HG GRIND CAMS
Bolt-in cam for lower rpm torque on heavier bikes
For two-up touring
Good power from 1800-5500 rpm
Can be used with stock springs and tappets
Works well with carbs or fuel injection
31HG GRIND CAMS
Great cam for motors with 95+ inches and 10:1 compression ratio
Lower TDC lift means easy installation
Similar to 37G but different timing (2000-5800 rpm power range)
Can be used with stock springs and tappets
32HG GRIND CAMS
Hi-lift High lift version of 31G. Much more (+20%) power thru RPM range with 10:1+ comp. ratio
2800-5800 RPM range
37HG GRIND CAMS
Bolt-in cams have shown 80+ rear wheel HP
Smooth idle with broad torque band
Run best with low restriction exhausts (2200-5800 rpm)
Can be used with stock valve springs and tappets
Works well with carbs or fuel injection
44HG GRIND CAMS
Bolt-in cams for 88+” and 9.5 compression ratio or higher
Maximum torque and horsepower at middle and upper rpm (2400-6000+ rpm)
Cams work best with carburetor
Can be used with stock valve springs and tappets
50HG GRIND CAMS
Designed for 95”+ motors with 9.25:1 to 9.50:1 C.R. and stock heads
For lighter bikes
Cams work best at higher rpm of 2500-6000
Can be used with stock valve springs and tappets
54HG/G GRIND CAMS
Designed for 96" and 103" motors with up to 10: 1 compression ratio
Cams work best at rpm range of 2200-5600
55HG GRIND CAMS
Cams for maximum torque and horsepower at higher rpm ranges (2600-6000+ rpm)
Designed for engines with 9.5:1 CR or higher with 88-95”
Coil bind must be checked, but stock tappets can be used
59HG GRIND CAMS
For 95”+ motors with 10:1 CR or higher
Maximum torque and HP at middle and upper rpm ranges (2400-6200 rpm)
Coil bind must be checked, but can use stock tappets
60HG GRIND CAMS
Designed for 95”+ motors with major head work
Maximum torque and HP at middle and upper rpm ranges (2700-6500+ rpm)
Coil bind and valve-to-valve and valve-to-piston clearance must be checked
64HG GRIND CAMS
For 95”+ motors with 10:1 CR or higher
Heads must be set up for .700 lift cams and flowed for peak airflow
Make maximum torque and HP at upper rpm (3000-6500 rpm)
Coil bind must be checked, but can use stock tappets
67HG GRIND CAMS
Hi-lift Performance cams for 95-107+ inches, 10.0 to10.8 compression ratio with high-flow head setup. (2600-6400+ RPM)
NOTES: All Andrews gear-driven cams require four-gear set for installation (DS-199532 or DS-199538 for 99-06 applications; 0925-0166 or 0925-0152 or 07 Twin Cam and 06 Dyna applications).
Installer must check coil bind, valve-to-valve clearance and valve-to-piston clearance.
59G, 60G and 64G cams are for highly tuned engines and require the knowledge of an expert engine builder for proper setup and installation.
