Comp Cams 12-234-2 Xtreme Energy Hydraulic Flat Tappet Camshaft 256H

Chevy 262-400ci Small Block 1955-98

*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.

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

Specifications:

Intake Valve Lift (in.) 0.447

Exhaust Valve Lift (in.) 0.454

RPM Range 1000-5200

Int. Duration @ .050 in. (Deg) 212

Exh. Duration @ .050 in. (Deg) 218

Int. Duration Advertised (Deg) 256

Exh. Duration Advertised (Deg) 268

Engine Make/Size Chevy Small Block (262-400)

Lifter Type Hydraulic Flat Tappet

Usage Street/Performance

Advertised Duration 256 int./268 exh.

Advertised Exhaust Duration 268

Advertised Intake Duration 256

Basic Operating RPM Range 1,000-5,200

Cam Style Hydraulic flat tappet

Computer-Controlled Compatible No

Duration at 050 inch Lift 212 int./218 exh.

Exhaust Duration at 050 inch Lift 218

Exhaust Valve Lift with Factory Rocker Arm Ratio (in.) 0.454

Grind Number CS XE256H-10

Intake Duration at 050 inch Lift 212

Intake Valve Lift with Factory Rocker Arm Ratio (in.) 0.447

Quantity Sold individually

Valve Lift with Factory Rocker Arm Ratio 0.447 int./0.454 exh.

Valve Springs Required Yes

Lobe Separation (Deg) 110

Manufacturer's Part Number: 12-234-2