Energizer: Energizer performance cams are hydraulic cams offering sizeable torque, horsepower, and rpm increases at an affordable price! Energizer cams are designed using the same computer techniques and software that developed the world's fastest and quickest cams! These single-pattern cams have tighter lobe separations, for added torque, mid-range power, throttle response and that popular "lumpy idle" for non-computer controlled V-8 engines. PowerMax: PowerMax cams are dual-pattern, for balanced intake/exhaust flow that produces maximum low-end, mid-range and upper rpm power. PowerMax hydraulic cams begin at 248° advertised duration (192°/204°@ .050"), .400/.427" valve lift, through the most radical cam in the series, 312°/319° advertised duration (262°/270° @ .050") and .636" valve lift! Many PowerMax cams are profiled to maximize the effects of nitrous-oxide, supercharger, and turbocharger systems. Saturday Night Special: Crane Saturday Night Specials are hydraulic and mechanical ("solid") lifter cam kits for rules-limited oval track racing and ET-Bracket drag racing applications. For oval track racing they produce maximum off-the-corner torque, with strong upper-rpm horsepower to pull the straightaways. For drag racing they produce maximum torque, for starting line launch and the upper rpm power to pull through the gears. Saturday Night Specials are available for Small-block and Big-block Chevy; 289-302-351W Ford; and 429-460 Ford V-8's. Energizer® Cam & Lifters Kits PowerMax Cam & Lifters Kits Saturday Night Special Cam, Lifters & Springs Kit