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Crane Cams 100052

Crane Cams Energizer Camshaft & Lifter Kits

Crane Cams 100052

271-100052

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Crane Cams 100052 Crane Cams Energizer Camshaft & Lifter Kits $196.09
Energizer Hydraulic Flat Tappet Camshaft & Lifter Kit
Lift: .454''/.454''
Duration: 272°/272°
RPM Range: 1600-5400
CARB E.O. #D225-21

Crane Cams 100052 Details

1955-98 Small Block Chevy 262-400ci

Crane Energizer emissions legal cams are single-pattern cams have tighter lobe separations, for added torque, mid-range power, throttle response and that popular ''lumpy idle'' for non-computer controlled V-8 engines.

*Note: 50-State Legal. This camshaft has been granted a California Air Resources Board (CARB) exemption (an ''EO'' number), or is a direct or consolidated replacement part. It is 50-state legal, per the manufacturer's application guide.

**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.

GOOD IDLE, DAILY USAGE, OFF ROAD, HIGHWAY TOWING, FUEL EFFICIENCY PLUS PERFORMANCE, 2600-3000 CRUISE RPM, 8.75 TO 10.0 COMPRESSION RATIO ADVISED. (50 STATE LEGAL, PRE-COMPUTER, C.A.R.B. E.O. D-225-21)

Grind Number: 272 H10
Operating Range:1600-5400 RPM
Duration Advertised:272° Intake / 272° Exhaust
Duration @ .050'' Lift:216° Intake / 216° Exhaust
Valve Lift w/1.5 Rockers:.454'' Intake / .454'' Exhaust
Lobe Separation Angle:110°
Max Lift Angle:105° ATDC Intake / 115° BTDC Exhaust
Open/Close @.050'' Cam Lift:Intake - 3° BTDC (opens) / 33° ABDC (closes)
Exhaust - 43° BBDC (opens) / (7°) BTDC (closes)

Specifications:

Gaskets Included
No
Advertised Duration
272 int./272 exh.
Advertised Exhaust Duration
272
Advertised Intake Duration
272
Assembly Lubricant Included
Yes
Basic Operating RPM Range
1,600-5,400
Cam Style
Hydraulic flat tappet
CARB EO Number
D-225-21 (pdf)
Computer-Controlled Compatible
No
Duration at 050 inch Lift
216 int./216 exh.
Exhaust Duration at 050 inch Lift
216
Exhaust Valve Lift with Factory Rocker Arm Ratio (
0.454
Intake Duration at 050 inch Lift
216
Intake Valve Lift with Factory Rocker Arm Ratio (i
0.454
Lifter Style
Hydraulic flat tappet
Lifters Included
Yes
Locks Included
No
Pushrods Included
No
Quantity
Sold as a kit
Retainers Included
No
Rocker Arms Included
No
Timing Chain and Gears Included
No
Valve Lift with Factory Rocker Arm Ratio
0.454 int./0.454 exh.
Valve Springs Included
No
Valve Springs Required
Yes
Valve Stem Seals Included
No
Lobe Separation (Deg)
110
Manufacturer's Part Number:
100052

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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