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Technical Articles for Part Number CCA-K11-551-5
COMP Cams Magnum Marine Solid Cam and Lifter Kits K11-551-5
Part Number: CCA-K11-551-5
COMP Cams Magnum Marine Solid Cam and Lifter Kits
Cam, Lifters, Valvetrain, Mechanical Flat Tappet, Duration 280/285, Lift .575/.604, Chevy, Big Block, Kit
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Estimated Ship Date: Dec 21, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
K11-551-5
Part Type:
Product Line:
Summit Racing Part Number:
CCA-K11-551-5
UPC:
036584079750
Cam Style:
Solid flat tappet
Basic Operating RPM Range:
2,800-6,300
Camshaft Use:
Marine
Camshaft Manufacturers Description:
Jet boat with A or B impeller. Skiing, pleasure, performance.
Intake Duration at 050 inch Lift:
242
Exhaust Duration at 050 inch Lift:
250
Duration at 050 inch Lift:
242 int./250 exh.
Advertised Intake Duration:
280
Advertised Exhaust Duration:
285
Advertised Duration:
280 int./285 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.575 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.604 in.
Valve Lift with Factory Rocker Arm Ratio:
0.575 int./0.604 exh.
Lobe Separation (degrees):
110
Camshaft Gear Attachment:
3-bolt
Computer-Controlled Compatible:
No
Lifters Included:
Yes
Lifter Style:
Mechanical flat tappet
Valve Springs Included:
Yes
Retainers Included:
Yes
Locks Included:
Yes
Valve Stem Seals Included:
Yes
Timing Chain and Gears Included:
Yes
Assembly Lubricant Included:
Yes
Pushrods Included:
No
Rocker Arms Included:
No
Gaskets Included:
No
Valve Springs Required:
Yes
Quantity:
Sold as a kit.
COMP Cams Magnum Marine Solid Cam and Lifter Kits
COMP Cams Magnum marine solid cam and lifter kits are specifically designed for the watercraft enthusiast looking for more power and speed. Whether your choice would be the 270s with low-speed torque and noticeable idle, or the 306s for larger cubic inch engines with tremendous high-rpm power and radical idle, one of the many Magnum Series cam and lifter kits will fit your engine's needs.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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