Xtreme Energy 274H Hydraulic Flat Tappet Camshaft Complete Kit
Lift: .490"/.490''
Duration: 274°/286°
RPM Range: 1800-6000


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 mid-range, torque & throttle response, needs 2200+ stall.

Operating Range:	1800-6000 RPM
Duration Advertised:	274° Intake / 286° Exhaust
Duration @ .050' Lift:	230° Intake / 236° Exhaust
Valve Lift w/1.5 Rockers:	.487' Intake / .490' 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


Very strong mid-range torque and throttle response, 2200+ stall.

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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