Electronic Fuel Injected engines have very different camshaft requirements from those of carbureted engines, which require a strong signal at the carb booster to draw the correct fuel mixture into the combustion chamber. Since that excess flow is not required with EFI engines, camshaft lobe profiles can be manipulated for increased performance.
The new XFI™ camshafts feature wider lobe separation for decreased overlap, yielding a more efficient combustion process.The XFI™ lobe profiles were designed to work in conjunction with recent valve train technology advancements such as COMP Cams® Super Clean™ Beehive™ valve springs, thus delivering faster valve openings and closings while maintaining complete valve train control. Additionally, the XFI™ camshafts take advantage of the high velocity EFI-style cylinder head intake ports, intake manifolds and combustion chamber designs.The result: dramatic improvement in performance and durability for today’s fuel injected engines.
112-500-11 208/212 .522/.525 113 LS Slight noticeable idle, slight tuning modifications, excellent torque throughout range, Needs programmer.
112-501-11 216/220 .528/.531 113 LS Noticeable idle, moderate tuning modifications, strong midrange. Needs programmer.
112-502-11 224/228 .547/.550 114 LS Needs extended rev-limit and better exhaust, strongest power over 2500 rpm. Requires tuning of the ECM.
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