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Technical Articles for Part Number CCA-K12-416-8
COMP Cams Xtreme Marine Retrofit Cam and Lifter Kits K12-416-8
Part Number: CCA-K12-416-8
COMP Cams Xtreme Marine Retrofit Cam and Lifter Kits
Cam, Lifters, Valvetrain, Hydraulic Roller Tappet, Duration 264/270, Lift .488/.495, Chevy, Small Block, Kit
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Estimated Ship Date: Dec 14, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
K12-416-8
Part Type:
Product Line:
Summit Racing Part Number:
CCA-K12-416-8
UPC:
036584041573
Cam Style:
Hydraulic roller, Retro-fit
Basic Operating RPM Range:
1,200-5,200
Camshaft Use:
Marine
Camshaft Manufacturers Description:
Good for inboard/outboard pleasure boat, skiing and good economy.
Intake Duration at 050 inch Lift:
212
Exhaust Duration at 050 inch Lift:
218
Duration at 050 inch Lift:
212 int./218 exh.
Advertised Intake Duration:
264
Advertised Exhaust Duration:
270
Advertised Duration:
264 int./270 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.488 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.495 in.
Valve Lift with Factory Rocker Arm Ratio:
0.488 int./0.495 exh.
Lobe Separation (degrees):
112
Grind Number:
XM264HR
Computer-Controlled Compatible:
No
Lifters Included:
Yes
Lifter Style:
Hydraulic roller
Valve Springs Included:
Yes
Outside Diameter of Outer Spring (in.):
1.430 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:
Designed for early model non-roller lifter engine blocks. Requires thrust button and wear plate.
COMP Cams Xtreme Marine Retrofit Cam and Lifter Kits
Give your boat an Xtreme setup! COMP Cams Xtreme marine retrofit cam and lifter kits are designed to take advantage of the newest developments in camshaft design and to provide maximum performance. Their aggressive lobe design produces better throttle response and top-end horsepower than other systems with the same duration at .050 in., while delivering increased engine vacuum. These kits are available for everything from pleasure boats to race applications, so you can always have Xtreme performance on the water.
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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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