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COMP Cams Camshaft Kit CB X4 270H-11

SKU: CCAK11-239-3

Camshaft Kits

CCA Camshaft Kits...

COMP Cams Camshaft Kit CB X4 270H-11

SKU: CCAK11-239-3

Camshaft Kits

CCA Camshaft Kits...

A$1,537.66
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

COMP Cams Camshaft Kit CB X4 270H-11

K-KIT - Complete Kit Includes: Camshaft, Lifters, Valve Springs, Retainers, Valve Locks, Valve Stem Seals, Timing Chain Set, Assembly Lube (in flat tappet applications), Decals and Instructions.

Additional Information

Best with improved intake manifold, needs headers and 3.55-3.90 gears. 2000+ stall.

Application Summary

Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts

Part Type

Engine Camshaft Kit

Product Overview

COMP Cams offers complete component-matched valve train kits that deliver unbeatable performance, durability and ease of installation.

All cam kits are fully tested and manufactured to the strictest standards. Each kit's components were specifically chosen as the best performance match for that particular camshaft so that you can reap the benefits of a perfectly matched “Power Engineered System.”

*K-Kit - Complete Kit Includes*
• Camshaft
• Lifters
• Valve Springs
• Retainers
• Valve Locks
• Valve Stem Seals
• Assembly Lube
• Decals
• Instructions

Additional Application Notes
• Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Hy. Flat Tappet;1600-5800rpm;Adv.Dur. 270 Int./278 Exh.;V.Lift .544 Int./.564 Exh.;Lobe 111 deg;Incl.Cam/Lifter/V.Sprng/Ret./Lock/Seal/Timing Set;
• w/ N Engine VIN; Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Hy. Flat Tappet;1600-5800rpm;Adv.Dur. 270 Int./278 Exh.;V.Lift .544 Int./.564 Exh.;Lobe 111 deg;Incl.Cam/Lifter/V.Sprng/Ret./Lock/Seal/Timing Set;
• w/ N Engine VIN;

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 21:17:25

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:278
Advertised Intake Duration:270
Amazon ASIN:B000RA0GRA
Assembly Lubricant Included:Yes
Basic Operating RPM Range:1,600-5,800
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
Camshaft Gear Attachment:3-Bolt
Camshaft Material:Cast Iron
Camshaft Series:Xtreme 4x4
Description:Xtreme 4x4 226/234 Hydraulic Flat Cam K-Kit for Chevrolet Big Block 396-454
Engine Family:Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)
Exhaust Duration @ .050 in.:234
Exhaust Duration at .050 inch Lift:234
Exhaust Duration:278
Exhaust Valve Lift(in):0.564
Exhaust Valve Lift:0.564
Gaskets Included:No
Intake Duration @ .050 in.:226
Intake Duration at .050 Inch Lift:226
Intake Duration:270
Intake Valve Lift(in):0.544
Intake Valve Lift:0.544
Kit Type:K-Kit - Complete Kit
Lifter Type:Hydraulic Flat Tappet
Lifters Included:Yes
Part Number:ccaK11-239-3
RPM Range:1000-7000
Title:Xtreme 4x4 226/234 Hydraulic Flat Cam K-Kit for Chevrolet Big Block 396-454
Usage:Street/Performance
Valve Springs Included: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 19:09:54

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Comp Cams, Comp Cams (edelbrock)
StreetFX SKU ccaK11-239-3
SFX Item ID 4123625
Accounting SKU cca-K11-239-3
Manufacturer SKU K11-239-3
Manufacturer UPC 036584040866
Alternative References CCA-K11-239-3, K11-239-3

Cam/Lifters/Valvetrain, Hydraulic Flat Tappet, Adv. Duration 270/278, Lift .544/.564 in., Chevy, Big Block

COMP Cams Xtreme Energy 4x4 cam and lifter kits are built to take advantage of the latest cam technology to provide maximum performance and low-end torque for your vehicle. Whether your use is off-roading or towing, there is an Xtreme 4x4 for you. By using an aggressive lobe profile, these cams provide better throttle response and more top-end horsepower than equivalent cams from other manufacturers, while delivering increased engine vacuum.

Product Attributes
BrandCOMP Cams
Manufacturer's Part NumberK11-239-3
Part TypeCamshaft Kits
Product LineCOMP Cams Xtreme Energy 4x4 Cam and Lifter Kits
UPC036584040866
Cam StyleHydraulic flat tappet
Basic Operating RPM Range1,600-5,800
Camshaft UseStreet/Strip
Intake Duration at 050 inch Lift226
Exhaust Duration at 050 inch Lift234
Duration at 050 inch Lift226 int./234 exh.
Advertised Intake Duration270
Advertised Exhaust Duration278
Advertised Duration270 int./278 exh.
Intake Valve Lift with Factory Rocker Arm Ratio0.544 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio0.564 in.
Valve Lift with Factory Rocker Arm Ratio0.544 int./0.564 exh.
Grind NumberCB X4 270H-11
Computer-Controlled CompatibleNo
Lifters IncludedYes
Lifter StyleHydraulic flat tappet
Valve Springs IncludedYes
Outside Diameter of Outer Spring (in.)1.509 in.
Retainers IncludedYes
Locks IncludedYes
Valve Stem Seals IncludedYes
Timing Chain and Gears IncludedYes
Timing Chain StyleDouble non-roller
Assembly Lubricant IncludedYes
Pushrods IncludedNo
Rocker Arms IncludedNo
Gaskets IncludedNo
Valve Springs RequiredNo
QuantitySold as a kit.

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