Xtreme Energy XR288HR Retro-Fit Hydraulic Roller Camshaft
Lift: .520''/.540''
Duration: 288°/294°
Lobe Separation Angle: 110°
RPM Range: 2500-6000


*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.

**Note: Requires thrust button & wear plate.

Street/Strip applications, 9:1 compression ratio, intake, headers, 3000 stall converter, gears.

Operating Range:	2500-6000 RPM
Duration Advertised:	288° Intake / 294° Exhaust
Duration @ .050' Lift:	236° Intake / 242° Exhaust
Valve Lift w/1.5 Rockers:	.520' Intake / .540' Exhaust
Lobe Separation Angle:	110°

265, 283, 307, 302, 305, 327, 350, 383, 400, 427, L46, L48, L65, LM1, LT-1, L82, L81, LS9, L83, L98, L05, LG3, LG4, LT1, LT4, Camaro, Corvette, Chevelle, Stingray, Silverado, C10, Firebird, Chevrolet, Chevy, Small Block Chevy, Caprice, Malibu, Impala, Nova, 355, GEN1, Monte Carlo, S10


Street/strip applications, 9:1 compression, rough idle intake, headers, 2800+ stall, gears.

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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