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Gross valve lift is the cam lift multiplied by the rocker ratio.
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To figure your cams overlap; add the intake opening event to the exhaust closing event.
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Torque x RPM / 5252 = Horsepower
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Centerline is the distance in crankshaft degrees from TDC to the center of the intake lobe.
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Valve Lift = Lobe Lift x Rocker Arm Ratio (Evo - 1.60, Shovel - 1.425)
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Lobe Lift = Valve Lift / Rocker Arm Ratio (Evo - 1.60, Shovel - 1.425)
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Distance from Cam Nose to Cam Heel - Base Circle Diameter Lobe Lift
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Overlap is the distance in crankshaft degrees that both the intake and the exhaust valves are open (at a specified amount e.g.: .053"), at the same time.
