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Crane Cams 100072 - Crane Cams Energizer Camshaft & Lifter Kits

Crane Cams 100072 - Crane Cams Energizer Camshaft & Lifter Kits

Crane Cams#271-100072

Energizer Hydraulic Flat Tappet Camshaft & Lifter Kit
Lift: .480''/.480''
Duration: 284°/284°
RPM Range: 2800-6200

Crane Cams 100072 - Crane Cams Energizer Camshaft & Lifter Kits Details

1955-98 Small Block Chevy 262-400ci

*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: Beginning in 1987, most of the V-6 and V-8 engines were equipped with hydraulic roller camshafts. There are differences in the block to accommodate a cam retention thrust plate and the anti-rotation mechanism for the lifters. These blocks are identifiable by bolt holes for a cam retention plate under the upper timing sprocket, as well as bosses and tapped holes in the lifter valley for lifter retention hardware. The camshafts on these engines have a step nose and smaller bolt circle on the front of the cam. An earlier model camshaft may be used in these blocks by using the appropriate timing chain set and adding a thrust button when using a roller cam.
1988-99 Chevrolet 305 and 350 V-8 engines (and some 1987 350 V-8 engines) use a different configuration camshaft core than the 1955-87 engines and cannot be interchanged.

FAIR IDLE, MODERATE PERFORMANCE USAGE, GOOD MID-RANGE HP, 3400-3800 CRUISE RPM, 9.5 TO 11.0 COMPRESSION RATIO ADVISED.

Grind Number: 284 H12
Operating Range:2800-6200 RPM
Duration Advertised:284° Intake / 284° Exhaust
Duration @ .050'' Lift:228° Intake / 228° Exhaust
Valve Lift w/1.5 Rockers:.480'' Intake / .480'' Exhaust
Lobe Separation Angle:112°
Max Lift Angle:107° ATDC Intake / 117° BTDC Exhaust
Open/Close @.050'' Cam Lift:Intake - 7° BTDC (opens) / 41° ABDC (closes)
Exhaust - 51° BBDC (opens) / (3°) BTDC (closes)

Crane Cams 100072 - Crane Cams Energizer Camshaft & Lifter Kits

Available alone or with lifters, the Energizer Series of performance hydraulic camshafts offers streetable performance with serious torque, horsepower, and RPM gains at an affordable price. These single-pattern camshafts have profiles with tighter lobe separations for added torque, midrange power, and throttle response. They're great for stock or mildly modified V8 applications (not for computer-controlled engines).

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