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Technical Articles for Part Number CCA-K11-239-3
COMP Cams Xtreme Energy 4x4 Cam and Lifter Kits
Cam/Lifters/Valvetrain, Hydraulic Flat Tappet, Adv. Duration 270/278, Lift .544/.564 in., Chevy, Big Block
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Estimated Ship Date: Dec 30, 2026 Would you rather pick it up?
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Overview
Brand:
Manufacturer's Part Number:
K11-239-3
Part Type:
Product Line:
Summit Racing Part Number:
CCA-K11-239-3
Item Number:
638626
UPC:
036584040866
Cam Style:
Hydraulic flat tappet
Basic Operating RPM Range:
1,600-5,800
Camshaft Use:
Street/Strip
Intake Duration at 050 inch Lift:
226
Exhaust Duration at 050 inch Lift:
234
Duration at 050 inch Lift:
226 int./234 exh.
Advertised Intake Duration:
270
Advertised Exhaust Duration:
278
Advertised Duration:
270 int./278 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.544 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.564 in.
Valve Lift with Factory Rocker Arm Ratio:
0.544 int./0.564 exh.
Lobe Separation (degrees):
111
Grind Number:
CB X4 270H-11
Computer-Controlled Compatible:
No
Lifters Included:
Yes
Lifter Style:
Hydraulic flat tappet
Valve Springs Included:
Yes
Outside Diameter of Outer Spring (in.):
1.509 in.
Retainers Included:
Yes
Locks Included:
Yes
Valve Stem Seals Included:
Yes
Timing Chain and Gears Included:
Yes
Timing Chain Style:
Double non-roller
Assembly Lubricant Included:
Yes
Pushrods Included:
No
Rocker Arms Included:
No
Gaskets Included:
No
Valve Springs Required:
No
Quantity:
Sold as a kit.
COMP Cams Xtreme Energy 4x4 Cam and Lifter Kits
COMP Cams Xtreme Energy 4x4 cam and lifter kits are built to take advantage of the latest cam technology to provide maximum performance and low-end torque for your vehicle. Whether your use is off-roading or towing, there is an Xtreme 4x4 for you. By using an aggressive lobe profile, these cams provide better throttle response and more top-end horsepower than equivalent cams from other manufacturers, while delivering increased engine vacuum.
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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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