Seller notes

Xtreme Energy 274H Hydraulic Flat Tappet Camshaft OnlyLift: .552''/.555''Duration: 274�/286�RPM Range: 1800-6000 *Note: In order to use these camshafts in 1965-66 396/427ci blocks, it is necessary to machine a 3/16'' wide x 7/64'' deep groove in the rear main journal of the cam to allow oil flow to the top of the engine.High performance street, very strong mid-range, with headers & 2500+ stall.Operating Range:1800-6000 RPMDuration Advertised:274° Intake / 286° ExhaustDuration @ .050'' Lift...

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