Xtreme Energy 256H Hydraulic Flat Tappet Camshaft & Lifter Kit
Lift: .480''/.485''
Duration: 256°/268°
RPM Range: 1000-5200


*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.

Strong torque thru low & mid-range, good idle.

Operating Range:	1000-5200 RPM
Duration Advertised:	256° Intake / 268° Exhaust
Duration @ .050' Lift:	212° Intake / 218° Exhaust
Valve Lift w/1.7 Rockers:	.480' Intake / .485' Exhaust
Lobe Separation Angle:	110°

Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572


Strong torque thru low and mid-range, good idle.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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