Crane Cams explosive dyno-proven HP, torque RPM and reliability now available for Twin Cam 88 engines with S&S gear drive setup (Except 06 Dyna) 4 computer-designed hydraulic cams for mild street/cruising to killer, race engine build-ups Lobe-to-lobe cam profile accuracy for off-idle torque to high-RPM horsepower These cams require the S&S Cam Gear Drive Kit #49-9679 Ok with stock cubic inch or big bore kits (95 c.
i.
) Best power with incr.
comp.
ratio, 9.
5:1 - up head modification Must use Crane Cams valve springs, for 0.
570 in lift Great low end and mid-range torque with added upper RPM Must use performance air cleaner and free-flow exhaust Range - 1,800 to 5,800 RPM Advertised Duration @.