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A lot like head work, they only tell you a little bit or if any at all. Anyways, these are the specs given to SCC by JWT on their S3 cams. valve lift intake: .445" exhaust:.445", duration intake: 260deg. exhaust: 260deg., eff. lobe centerline intake: 111deg. ATDC, exhaust:117deg. BTDC, lobe seperation angle intake: 114deg.
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