Crane Cams Hydraulic Flat Tappet Camshafts

Name: Crane Cams Hydraulic Flat Tappet Camshafts
Brand: CRANE CAMS
SKU: 271-113801
Price: 138.99 USD
Availability: OutOfStock

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Small Block Chevy 262-400ci 1955-98

Lift:

Advertised Duration:

RPM Range:

Click More Info for specifications

Crane PowerMax emissions-legal cams produce amazing increases in torque, horsepower, and throttle response while extending the RPM powerband of computer-controlled performance passenger cars and light trucks. They permit full function of stock engine computers or aftermarket performance chips.
Characteristics
Good idle
3000-3400 cruise RPM
Daily performance usage
Mild bracket racing
9.5 to 10.75 compression ratio advised
CARB-Approved This camshaft is 50-state legal per the manufacturer's application guide. It has been granted a California Air Resources Board exemption (a "CARB EO" number) or is a direct or consolidated replacement part.
Notes
To use this cam in 1955-57 265 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.
Beginning in 1987, most V6 and V8 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, as well as some 1987 350 engines, use a camshaft core with a different configuration than the 1955-87 engines and cannot be interchanged.

Grind Number	H-278-2 (Replaces HMV-278-2)
Operating Range	2200-6200 RPM
Duration Advertised	278° Intake/290° Exhaust
Duration @ .050" Lift	222° Intake/234° Exhaust
Valve Lift with 1.5 Rockers	.467" Intake/.494" Exhaust
Lobe Separation Angle	114°
Max Lift Angle	Intake: 109° ATDC Exhaust: 119° BTDC
Open/Close @ .050" Cam Lift	Intake: 2° ATDC (opens) 40° ABDC (closes) Exhaust: 56° BBDC (opens) 2° BTDC (closes)