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Technical Articles for Part Number CCA-K21-671-4
COMP Cams Nostalgia Plus Cam and Lifter Kits K21-671-4
Part Number: CCA-K21-671-4
COMP Cams Nostalgia Plus Cam and Lifter Kits
Cam, Lifters, Valvetrain, Hydraulic Flat Tappet, Duration 284/291, Lift .484/.484, Chrysler, Big Block, Kit
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Estimated Ship Date: Dec 16, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
K21-671-4
Part Type:
Product Line:
Summit Racing Part Number:
CCA-K21-671-4
UPC:
036584081340
Cam Style:
Hydraulic flat tappet
Basic Operating RPM Range:
2,300-6,300
Camshaft Use:
Street/Strip
Intake Duration at 050 inch Lift:
239
Exhaust Duration at 050 inch Lift:
246
Duration at 050 inch Lift:
239 int./246 exh.
Advertised Intake Duration:
284
Advertised Exhaust Duration:
291
Advertised Duration:
284 int./291 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.484 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.484 in.
Valve Lift with Factory Rocker Arm Ratio:
0.484 int./0.484 exh.
Lobe Separation (degrees):
108
Camshaft Gear Attachment:
1-bolt
Grind Number:
PP284H
Computer-Controlled Compatible:
No
Lifters Included:
Yes
Lifter Style:
Hydraulic flat tappet
Valve Springs Included:
Yes
Outside Diameter of Outer Spring (in.):
1.524 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 Nostalgia Plus Cam and Lifter Kits
Famous factory camshafts of the past are combined with the latest advanced camshaft technology to give you the sound and excitement of the musclecar era. COMP Cams Nostalgia Plus cam and lifter kits are specifically designed to capture the essence of the original '60s musclecar with additional power that you can feel in the seat of your pants. The new technology creates awesome response to give new life to any hot rod.
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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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