Xtreme 4x4 X4254H Hydraulic Flat Tappet Camshaft
Lift: .505''/.505''
Duration: 254°/262°
Lobe Separation Angle: 111°
RPM Range: 1000-5000



*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.

Good low-end and mid-range torque and power with a good idle.

Operating Range:	1000-5000 RPM
Duration Advertised:	254° Intake / 262° Exhaust
Duration @ .050' Lift:	210° Intake / 218° Exhaust
Valve Lift w/1.7 Rockers:	.505' Intake / .505' Exhaust
Lobe Separation Angle:	111°

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


Good low end and mid-range torque and power, 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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