Reply to "106 Lobe Separation Angle"

George PAdmin.

quote:

Originally posted by 73 l:

what is the differenc between lsa and lcl ...

LSA is an acronym for Lobe Separation Angle ... which is the only camshaft spec that is expressed in camshaft degrees. All other camshaft specs are expressed in crankshaft degrees. It is the number of camshaft degrees between the center-lines of the exhaust lobe and intake lobe.

LCL is not accurate, the first letter in that acronym is an I. ICL is an acronym for Intake Center-Line. It is the number of crankshaft degrees between top dead center and the intake lobe's center-line. Locating the centerline of the intake lobe is used as one method of checking or verifying the timing the camshaft.

Modern aftermarket cams are almost always timed by their designers in such a way that the ICL is 4° to 6° less than the LSA. In the case of your cam the 110° ICL is 4° less than the 114° LSA. This timing is also expressed as being 4° advanced.

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10/15/124:16 PM

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