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COMP Cams Camshaft CRB 284H PP484

SKU: CCA21-671-4

Camshafts

CCA Camshafts...

COMP Cams Camshaft CRB 284H PP484

SKU: CCA21-671-4

Camshafts

CCA Camshafts...

A$706.68
Available from MFR. In stock at 1 location (3 available)

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Description

Camshaft - Nostalgia Plus - Hydraulic Flat Tappet - Lift 0.484 in / 0.484 in - Duration 284 / 291 - 108 LSA - 2300 / 6300 RPM - Mopar B / RB-Series - Each

N+ 239/246HFTChryBRB

Replaces The Popular 484 Cam

Additional Information

Strong mid-range with a lopey idle, 2800+ stall with 9.5:1 compression, replaces the popular 484 cam.

Application Summary

Fits Chrysler B/RB 383, 400, 413, 426 Wedge and 440

Part Type

Engine Camshaft

Product Overview

*Nostalgia Plus Camshafts*
• Specifically designed to capture the essence of the original 1960s muscle car experience
• Combine famous factory cam performance with modern camshaft lobe designs for increased throttle response
• Excellent sound improvement through camshaft specifications (with similar vacuum characteristics to its muscle car era counterparts)

Additional Application Notes
• Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Hyd. Flat Tappet; Single Bolt; 2300-6300rpm; Adv. Dur. 284 Int./291 Exh.; Valve Lift .484 Int./Exh.; Lobe Angle 108 Deg.;

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Data: v4.2 - Upd: 2026-11-07 21:24:31

Features

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

Advertised Exhaust Duration:291
Advertised Intake Duration:284
Amazon ASIN:B000P5B93W
Assembly Lubricant Included:Yes
Basic Operating RPM Range:2,300-6300
C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?:Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?:Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for On-Road Vehicles?:No
C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?:Yes, but must be a race/competition only vehicle.
Cam Type:Hydraulic Flat Tappet
Cam and Lifter Kit Upgrade:CL21-671-4
Camshaft Gear Attachment:1-Bolt
Camshaft Material:Cast Iron
Camshaft Series:Nostalgia Plus
Description:Nostalgia Plus 239/246 Hydraulic Flat Cam for Chrysler 383-440
Engine Family:Chrysler 383-440 c.i. 8 Cylinder (1959-1980)
Exhaust Duration @ .050 in.:246
Exhaust Duration at .050 inch Lift:246
Exhaust Duration:291
Exhaust Valve Lift(in):0.484
Exhaust Valve Lift:0.484
Grind Number:PP284H
Intake Duration @ .050 in.:239
Intake Duration at .050 Inch Lift:239
Intake Duration:284
Intake Valve Lift(in):0.484
Intake Valve Lift:0.484
K-Kit Upgrade:K21-671-4
Lifter Type:Hydraulic Flat Tappet
Lifters Included:No
Part Number:cca21-671-4
RPM Range:2000-9000
Title:Nostalgia Plus 239/246 Hydraulic Flat Cam for Chrysler 383-440
Usage:Street/Performance
Valve Springs Required:Yes

Product Downloads

# Document Type Download
1. Catalog

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-07 19:02:40

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Comp Cams, Comp Cams (edelbrock)
StreetFX SKU cca21-671-4
SFX Item ID 4119446
Accounting SKU cca-21-671-4
Manufacturer SKU 21-671-4
Manufacturer UPC 036584070405
Alternative References 21-671-4, CCA-21-671-4, COM21-671-4

Camshaft, 1-Bolt, Hydraulic Flat Tappet, Advertised Duration 284/291, Lift .484/.484, Mopar, Big Block, Each

These 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 cams 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.

Product Attributes
BrandCOMP Cams
Manufacturer's Part Number21-671-4
Part TypeCamshafts
Product LineCOMP Cams Nostalgia Plus Camshafts
UPC036584070405
Cam StyleHydraulic flat tappet
Camshaft UseStreet/Strip
Basic Operating RPM Range2,300-6,300
Intake Duration at 050 inch Lift239
Exhaust Duration at 050 inch Lift246
Duration at 050 inch Lift239 int./246 exh.
Advertised Intake Duration284
Advertised Exhaust Duration291
Advertised Duration284 int./291 exh.
Intake Valve Lift with Factory Rocker Arm Ratio0.484 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio0.484 in.
Valve Lift with Factory Rocker Arm Ratio0.484 int./0.484 exh.
Camshaft Gear Attachment1-bolt
RemanufacturedNo
Computer-Controlled CompatibleNo
Grind NumberPP292H
Valve Springs RequiredYes
QuantitySold individually.

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