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COMP Cams Camshaft CS XM 276HR-12

SKU: CCA12-418-8

Camshafts

CCA Camshafts...

COMP Cams Camshaft CS XM 276HR-12

SKU: CCA12-418-8

Camshafts

CCA Camshafts...

A$1,171.68
Available from MFR. In stock at 1 location (6 available)

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Description

XM 224/230 HRlrSBC

For Retro-Fit (Link Bar) Hydraulic Roller Lifters

Additional Information

Good for jet with A impeller, strong mid-range power, needs good exhaust.

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 21:25:44

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:282
Advertised Intake Duration:276
Amazon ASIN:B000P5B770
Assembly Lubricant Included:No
Basic Operating RPM Range:1,800-5,800
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 Roller
Cam and Lifter Kit Upgrade:CL12-418-8
Camshaft Gear Attachment:3-Bolt
Camshaft Material:Austempered Ductile Iron
Camshaft Series:Xtreme Marine
Description:Xtreme Marine 224/230 Hydraulic Roller Cam for Chevrolet Small Block
Engine Family:Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
Exhaust Duration @ .050 in.:230
Exhaust Duration at .050 inch Lift:230
Exhaust Duration:282
Exhaust Valve Lift(in):0.51
Exhaust Valve Lift:0.51
Grind Number:XM276HR
Intake Duration @ .050 in.:224
Intake Duration at .050 Inch Lift:224
Intake Duration:276
Intake Valve Lift(in):0.503
Intake Valve Lift:0.503
K-Kit Upgrade:K12-418-8
Lifter Type:Hydraulic Roller
Lifters Included:No
Part Number:cca12-418-8
RPM Range:1000-7000
SK-Kit Upgrade:SK12-418-8
Title:Xtreme Marine 224/230 Hydraulic Roller Cam for Chevrolet Small Block
Usage:Marine
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 19:00:50

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Comp Cams, Comp Cams (edelbrock)
StreetFX SKU cca12-418-8
SFX Item ID 4118672
Accounting SKU cca-12-418-8
Manufacturer SKU 12-418-8
Manufacturer UPC 036584038412
Alternative References 12-418-8, CCA-12-418-8

Camshaft, Hydraulic Roller Tappet, Advertised Duration 276/282, Lift .503/.510, Chevy, Small Block, Each

COMP Cams Xtreme Marine camshafts take advantage of the newest developments in camshaft engineering. Their aggressive lobe design produces better throttle response and top-end horsepower than other cams with the same duration at .050 in., while delivering increased engine vacuum. These cams are available for everything from pleasure boats to race applications, so you can always enjoy Xtreme performance on the water. From hydraulic and mechanical, to flat and roller tappet, COMP Cams offers camshafts for your watercraft dating as far back as the 1950s.

Product Attributes
BrandCOMP Cams
Manufacturer's Part Number12-418-8
Part TypeCamshafts
Product LineCOMP Cams Xtreme Marine Camshafts
UPC036584038412
Cam StyleHydraulic roller, Retro-fit
Camshaft UseMarine
Basic Operating RPM Range1,800-5,800
Intake Duration at 050 inch Lift224
Exhaust Duration at 050 inch Lift230
Duration at 050 inch Lift224 int./230 exh.
Advertised Intake Duration276
Advertised Exhaust Duration282
Advertised Duration276 int./282 exh.
Intake Valve Lift with Factory Rocker Arm Ratio0.503 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio0.510 in.
Valve Lift with Factory Rocker Arm Ratio0.503 int./0.510 exh.
RemanufacturedNo
Computer-Controlled CompatibleNo
Grind NumberCS XM276HR
Valve Springs RequiredYes
QuantitySold individually.
NotesRetro-fit: Designed for early non-roller blocks. Requires thrust button and wear plate.

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