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COMP Cams Camshaft CS XR270HR-10

SKU: CCA12-422-8

Camshafts

CCA Camshafts...

COMP Cams Camshaft CS XR270HR-10

SKU: CCA12-422-8

Camshafts

CCA Camshafts...

A$1,292.77
IN STOCK! Est Ship 4-7 days. In stock at 2 locations (more than 10 available)

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Description

Camshaft - Xtreme Energy - Hydraulic Roller - Lift 0.495 / 0.502 in - Duration 270 / 276 - 110 LSA - 1600 / 5400 RPM - Small Block Chevy - Each

XE 218/224 HRlrSBC

Xtreme Energy 218/224 Hydraulic Roller Cam for Chevy Small Block. Very strong torque with excellent mileage and a smooth idle. Xtreme Energy Cams bridge the gap between Magnum street cams and race only cams. Xtreme Energy Cams provide increased torque, vacuum, response, and power while still providing quiet operation of the valve train and the durability required in daily driven vehicles. Xtreme Energy Benefits: Quicker opening lobe profiles deliver increased responsiveness & more area under the lift curve. More vacuum allows a step up in duration for greater performance. Best seller

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

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 21:25:43

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:B000CESFKQ
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
Cam and Lifter Kit Upgrade:CL12-422-8
Camshaft Gear Attachment:3-Bolt
Camshaft Material:Austempered Ductile Iron
Camshaft Series:Xtreme Energy
Description:Xtreme Energy 218/224 Hydraulic Roller Cam 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
Grind Number:XR270HR
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
K-Kit Upgrade:K12-422-8
Lifter Type:Hydraulic Roller
Lifters Included:No
Part Number:cca12-422-8
RPM Range:1000-7000
SK-Kit Upgrade:SK12-422-8
Title:Xtreme Energy 218/224 Hydraulic Roller Cam for Chevrolet Small Block
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 19:00:51

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Comp Cams, Comp Cams (edelbrock)
StreetFX SKU cca12-422-8
SFX Item ID 4118677
Accounting SKU cca-12-422-8
Manufacturer SKU 12-422-8
Manufacturer UPC 036584025153
Alternative References 12-422-8, CCA-12-422-8, COM12-422-8

Camshaft, Hydraulic Roller Tappet, Advertised Duration 270/276, Lift .495/.502, Chevy, Small Block, Each

COMP Cams Xtreme Energy retrofit camshafts are built to take advantage of the latest cam technology—and provide maximum performance. Whether your use is off-roading, towing, or street performance, there is an Xtreme Energy cam available for you. By using an aggressive lobe profile, these hydraulic roller tappet cams provide better throttle response, engine vacuum, and top-end horsepower than equivalent cams from other manufacturers. Choose the model and options designed for your engine application.

Product Attributes
BrandCOMP Cams
Manufacturer's Part Number12-422-8
Part TypeCamshafts
Product LineCOMP Cams Xtreme Energy Retrofit Camshafts
UPC036584025153
Cam StyleHydraulic roller, Retro-fit
Camshaft UseStreet/Strip
Basic Operating RPM Range1,600-5,400
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.
RemanufacturedNo
Computer-Controlled CompatibleNo
Grind NumberCS XR270HR-10
Valve Springs RequiredYes
QuantitySold individually.
NotesRetro-fit: Designed for early non-roller blocks. Requires thrust button and wear plate.

Compatibility

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