Seller notes

Xtreme Energy 250H Hydraulic Flat Tappet Camshaft & Lifter KitLift: .432''/.444''Duration: 250�/260�RPM Range: 600-4600 *Note: In order to use these camshafts in 1955-57 265ci blocks, it is necessary to machine a small groove in the rear main journal of the cam to allow oil flow to the top of the engine.Very strong torque, excellent mileage, smooth idle.Operating Range:600-4600 RPMDuration Advertised:250° Intake / 260° ExhaustDuration @ .050'' Lift:206° Intake / 212° ExhaustValve Lift w/...

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