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COMP Cams Camshaft Kit CS XR270H-R10

SKU: CCAK12-422-8

Camshaft Kits

CCA Camshaft Kits...

COMP Cams Camshaft Kit CS XR270H-R10

SKU: CCAK12-422-8

Camshaft Kits

CCA Camshaft Kits...

A$3,507.40
IN STOCK! Est Ship 4-7 days. In stock at 1 location (5 available)

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Description

COMP Cams Camshaft Kit CS XR270H-R10

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

High performance application, largest with stock converter, noticeable idle.

Application Summary

Fits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400. Does not fit LT1/LT4, or factory roller Small Blocks built from 1985 and newer. GM gradually added roller camshafts to 305's and 350's from the mid 80's forward. Camaros/Firebirds/Corvettes received the roller cams early, but many trucks and SUV's had flat tappet cams until the mid 90's. Remove the intake or timing cover to confirm whether the block is a factory roller or flat tappet. Does not fit the LS1, LS2, LS3 or any LS-based 4.8, 5.3, 5.7, 6.0 and 6.2. 1955-1957 Chevrolet 265 engines require a groove on the 5th cam journal for oiling. Contact us for more information.

Part Type

Engine Camshaft Kit

Product Overview

Fits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400. Does not fit LT1/LT4, or factory roller Small Blocks built from 1985 and newer. GM gradually added roller camshafts to 305's and 350's from the mid 80's forward. Camaros/Firebirds/Corvettes received the roller cams early, but many trucks and SUV's had flat tappet cams until the mid 90's. Remove the intake or timing cover to confirm whether the block is a factory roller or flat tappet. Does not fit the LS1, LS2, LS3 or any LS-based 4.8, 5.3, 5.7, 6.0 and 6.2. 1955-1957 Chevrolet 265 engines require a groove on the 5th cam journal for oiling. Contact us for more information.

Data: v4.2 - Upd: 2026-11-07 21:16:43

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:276
Advertised Intake Duration:270
Amazon ASIN:B000P5BO78
Assembly Lubricant Included:No
Basic Operating RPM Range:1,600-5,400
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 Roller
Camshaft Gear Attachment:3-Bolt
Camshaft Material:Austempered Ductile Iron
Camshaft Series:Xtreme Energy
Description:Xtreme Energy 218/224 Hydraulic Roller Cam K-Kit for Chevrolet Small Block
Engine Family:Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
Exhaust Duration @ .050 in.:224
Exhaust Duration at .050 inch Lift:224
Exhaust Duration:276
Exhaust Valve Lift(in):0.502
Exhaust Valve Lift:0.502
Gaskets Included:No
Intake Duration @ .050 in.:218
Intake Duration at .050 Inch Lift:218
Intake Duration:270
Intake Valve Lift(in):0.495
Intake Valve Lift:0.495
Kit Type:K-Kit - Complete Kit
Lifter Type:Hydraulic Roller
Lifters Included:Yes
Part Number:ccaK12-422-8
RPM Range:1000-7000
Title:Xtreme Energy 218/224 Hydraulic Roller Cam K-Kit for Chevrolet Small Block
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 19:10:15

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Comp Cams, Comp Cams (edelbrock)
StreetFX SKU ccaK12-422-8
SFX Item ID 4123752
Accounting SKU cca-K12-422-8
Manufacturer SKU K12-422-8
Manufacturer UPC 036584034094
Alternative References CCA-K12-422-8, CPCK12-422-8, K12-422-8

Cam/Lifters/Valvetrain, Hydraulic Roller Tappet, Adv. Duration 270/276, Lift .495/.502, Chevy, Small Block

COMP Cams Xtreme Energy retrofit cam and lifter kits are built to take advantage of the latest cam technology, to provide maximum performance. Whether your use is off-roading, towing, or street performance, there is an Xtreme Energy kit available for you. By using an aggressive lobe profile, these kits 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 NumberK12-422-8
Part TypeCamshaft Kits
Product LineCOMP Cams Xtreme Energy Retrofit Cam and Lifter Kits
UPC036584034094
Cam StyleHydraulic roller, Retro-fit
Basic Operating RPM Range1,600-5,400
Camshaft UseStreet/Strip
Intake Duration at 050 inch Lift218
Exhaust Duration at 050 inch Lift224
Duration at 050 inch Lift218 int./224 exh.
Advertised Intake Duration270
Advertised Exhaust Duration276
Advertised Duration270 int./276 exh.
Intake Valve Lift with Factory Rocker Arm Ratio0.495 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio0.502 in.
Valve Lift with Factory Rocker Arm Ratio0.495 int./0.502 exh.
Grind NumberCS XR270HR-10
Computer-Controlled CompatibleNo
Lifters IncludedYes
Lifter StyleHydraulic roller
Valve Springs IncludedYes
Outside Diameter of Outer Spring (in.)1.430 in.
Retainers IncludedYes
Locks IncludedYes
Valve Stem Seals IncludedYes
Timing Chain and Gears IncludedYes
Timing Chain StyleDouble roller
Assembly Lubricant IncludedNo
Pushrods IncludedNo
Rocker Arms IncludedNo
Gaskets IncludedNo
Valve Springs RequiredNo
QuantitySold as a kit.
NotesRetro-fit: Designed for early non-roller blocks. Requires thrust button and wear plate.

Compatibility

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