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Crane Mechanical Roller Camshafts 138871

Crane Cams 138871 - Crane Mechanical Roller Camshafts

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Camshaft, Mechanical Roller Tappet, Advertised Duration 282/290, Lift .714/.714, Chevy, Big Block, Each

Estimated Ship Date: 1/26/2015 (if ordered today) Would you rather pick it up? Select Location

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Brand: Crane Cams

Manufacturer's Part Number: 138871

Part Type: Camshafts

Product Line: Crane Mechanical Roller Camshafts

Summit Racing Part Number: CRN-138871

UPC: 021174044928

Cam Style: Mechanical roller tappet

Basic Operating RPM Range: 3,500-7,000

Intake Duration at 050 inch Lift: 250

Exhaust Duration at 050 inch Lift: 258

Duration at 050 inch Lift: 250 int./258 exh.

Advertised Intake Duration: 282

Advertised Exhaust Duration: 290

Advertised Duration: 282 int./290 exh.

Intake Valve Lift with Factory Rocker Arm Ratio: 0.714 in.

Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.714 in.

Valve Lift with Factory Rocker Arm Ratio: 0.714 int./0.714 exh.

Lobe Separation (degrees): 110

Intake Valve Lash: 0.020 in.

Exhaust Valve Lash: 0.020 in.

Computer-Controlled Compatible: No

Grind Number: R-250/420-2S-10

Valve Springs Required: Yes

Quantity: Sold individually.

Notes: Requires cam button spacer and an aluminum-bronze distributor drive gear. Also fits Rodeck 481 aluminum engines.

In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

Crane's mechanical roller camshafts are not for the weak of heart. These camshafts are engineered for operation at ranges that can exceed 10,000 rpm and are the perfect blend of performance and efficiency. While a large number of mechanical roller cams are used in purely competition applications, Crane also manufactures less severe roller grinds that are designed for high performance street engines that have higher compression or power-adders. (For best results, the valve lash must be checked and set periodically.) Crane Cams has the industry's largest database of camshaft profiles. This enables Crane to provide you with camshafts that are ideally suited for your application. If you have a power-eating mean machine, Crane has the perfect camshaft for you!

Warranty

Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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