Xtreme 4x4 X4270H Hydraulic Flat Tappet Camshafts
Lift .544/.564
Duration 270°/278°
Lobe Separation Angle: 111°
RPM Range 1600-5800

*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.

Hydraulic-Best with improved intake manifold, needs headers and 3.55 - 3.90 gears and 2000+ stall.

Operating Range:	1600-5800 RPM
Duration Advertised:	270° Intake / 278° Exhaust
Duration @ .050' Lift:	218° Intake / 226° Exhaust
Valve Lift w/1.7 Rockers:	.544' Intake / .564' 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


Best with improved intake manifold, needs headers and 3.55-3.90 gears. 2000+ 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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