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Technical Articles for Part Number CCA-21-228-4
COMP Cams Xtreme Energy Hi-Lift Camshafts
Camshaft, 1-Bolt, Hydraulic Flat Tappet, Advertised Duration 285/297, Lift .545/.545, Mopar, Big Block, Each
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Estimated Ship Date: Oct 28, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
21-228-4
Part Type:
Product Line:
Summit Racing Part Number:
CCA-21-228-4
UPC:
036584078326
Cam Style:
Hydraulic flat tappet
Camshaft Use:
Street/Strip
Basic Operating RPM Range:
2,500-6,200
Intake Duration at 050 inch Lift:
241
Exhaust Duration at 050 inch Lift:
247
Duration at 050 inch Lift:
241 int./247 exh.
Advertised Intake Duration:
285
Advertised Exhaust Duration:
297
Advertised Duration:
285 int./297 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.545 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.545 in.
Valve Lift with Factory Rocker Arm Ratio:
0.545 int./0.545 exh.
Lobe Separation (degrees):
110
Camshaft Gear Attachment:
1-bolt
Remanufactured:
No
Computer-Controlled Compatible:
No
Grind Number:
CRB XE285HL-10
Valve Springs Required:
Yes
Quantity:
Sold individually.
Notes:
Single-bolt camshaft.
COMP Cams Xtreme Energy Hi-Lift Camshafts
COMP Cams Xtreme Energy Hi-Lift camshafts 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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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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