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Technical Articles for Part Number CCA-CL12-420-8
COMP Cams Magnum Retrofit Cam and Lifter Kits
Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 270/270, Lift .500/.500, Chevy, Small Block, Kit
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Estimated Ship Date: Oct 23, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
CL12-420-8
Part Type:
Product Line:
Summit Racing Part Number:
CCA-CL12-420-8
UPC:
036584013518
Cam Style:
Hydraulic roller, Retro-fit
Basic Operating RPM Range:
1,800-5,000
Camshaft Use:
Street/Strip
Intake Duration at 050 inch Lift:
215
Exhaust Duration at 050 inch Lift:
215
Duration at 050 inch Lift:
215 int./215 exh.
Advertised Intake Duration:
270
Advertised Exhaust Duration:
270
Advertised Duration:
270 int./270 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.500 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.500 in.
Valve Lift with Factory Rocker Arm Ratio:
0.500 int./0.500 exh.
Lobe Separation (degrees):
110
Grind Number:
270HR
Computer-Controlled Compatible:
No
Lifters Included:
Yes
Lifter Style:
Hydraulic roller
Valve Springs Included:
No
Retainers Included:
No
Locks Included:
No
Valve Stem Seals Included:
No
Timing Chain and Gears Included:
No
Assembly Lubricant Included:
No
Pushrods Included:
No
Rocker Arms Included:
No
Gaskets Included:
No
Valve Springs Required:
Yes
Quantity:
Sold as a kit.
COMP Cams Magnum Retrofit Cam and Lifter Kits
COMP Cams Magnum retrofit cam and lifter kits are designed for everyone from the serious street performance enthusiast to the all-out competition drag racer. Whether you're driving a street rod, a show car with power accessories, a super gas, or super competition car on alcohol, COMP Cams 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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