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Technical Articles for Part Number CCA-K21-229-4
COMP Cams Xtreme Energy Hi-Lift Cam and Lifter Kits K21-229-4
Part Number: CCA-K21-229-4
COMP Cams Xtreme Energy Hi-Lift Cam and Lifter Kits
Cam/Lifters/Valvetrain, Hydraulic Flat Tappet, Adv. Duration 295/307, Lift .564/.564, Mopar, 383-440, Kit
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Estimated Ship Date: Dec 14, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
K21-229-4
Part Type:
Product Line:
Summit Racing Part Number:
CCA-K21-229-4
UPC:
036584081319
Cam Style:
Hydraulic flat tappet
Basic Operating RPM Range:
3,000-6,500
Camshaft Use:
Street/Strip
Intake Duration at 050 inch Lift:
251
Exhaust Duration at 050 inch Lift:
257
Duration at 050 inch Lift:
251 int./257 exh.
Advertised Intake Duration:
295
Advertised Exhaust Duration:
307
Advertised Duration:
295 int./307 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.564 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.564 in.
Valve Lift with Factory Rocker Arm Ratio:
0.564 int./0.564 exh.
Lobe Separation (degrees):
110
Camshaft Gear Attachment:
1-bolt
Grind Number:
XE295HL
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 roller
Assembly Lubricant Included:
Yes
Pushrods Included:
No
Rocker Arms Included:
No
Gaskets Included:
No
Valve Springs Required:
No
Quantity:
Sold as a kit.
Notes:
Pre-1968 engines require different lifters.
COMP Cams Xtreme Energy Hi-Lift Cam and Lifter Kits
COMP Cams Xtreme Energy Hi-Lift cam and lifter kits are designed to take advantage of the latest improvements in valvetrain components and the newest developments in camshaft design. The aggressive lobe design of these cams produces better throttle response, and their high-lift design gives extra lift for top-end horsepower.
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Some parts are not legal for use in California or other states with similar laws / regulations
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