Comp Cams 12-250-3 Xtreme Energy Hydraulic Flat Tappet Camshaft 284H

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.

Street/Strip, 2800+ stall, likes headers & gears, rough idle.

Specifications:

Intake Valve Lift (in.) 0.507

Exhaust Valve Lift (in.) 0.51

RPM Range 2300-6500

Int. Duration @ .050 in. (Deg) 240

Exh. Duration @ .050 in. (Deg) 246

Int. Duration Advertised (Deg) 284

Exh. Duration Advertised (Deg) 296

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

Lifter Type Hydraulic Flat Tappet

Usage Street/Performance

Advertised Duration 284 int./296 exh.

Advertised Exhaust Duration 296

Advertised Intake Duration 284

Basic Operating RPM Range 2,300-6,500

Cam Style Hydraulic flat tappet

Computer-Controlled Compatible No

Duration at 050 inch Lift 240 int./246 exh.

Exhaust Duration at 050 inch Lift 246

Exhaust Valve Lift with Factory Rocker Arm Ratio (in.) 0.51

Grind Number CS XE284H-10

Intake Duration at 050 inch Lift 240

Intake Valve Lift with Factory Rocker Arm Ratio (in.) 0.507

Quantity Sold individually

Valve Lift with Factory Rocker Arm Ratio 0.507 int./0.510 exh.

Valve Springs Required Yes

Lobe Separation (Deg) 110

Manufacturer's Part Number: 12-250-3