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COMP Cams Camshaft CS XM 256H-12

SKU: CCA12-232-3

Camshafts

CCA Camshafts

COMP Cams Camshaft CS XM 256H-12

SKU: CCA12-232-3

Camshafts

CCA Camshafts

A$672.36
Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.
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Description

SBC - 1955-57 models have an oiling groove in the rear journal. The listed part numbered cams will not fit these models, so if you require a Camshaft with the oiling groove, please call us at 1-800-999-0853 or contact us, and we will assist you with placing an order.

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.

Product Details

Advertised Exhaust Duration:262
Advertised Intake Duration:256
Amazon ASIN:B000CIUA3W
Assembly Lubricant Included:Yes
Basic Operating RPM Range:1,000-5,000
C.A.R.B. E.O. Number:N/A
C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?:Yes, but must meet tailpipe emission standards for year of vehicle.
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.
C.A.R.B. Exemption Reason:N/A
California Proposition 65:WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Cam Type:Hydraulic Flat Tappet
Cam and Lifter Kit Upgrade:CL12-232-3
Camshaft Gear Attachment:3-Bolt
Camshaft Material:Cast Iron
Camshaft Series:Xtreme Marine
Description:Xtreme Marine 212/218 Hydraulic Flat Cam for Chevrolet Small Block
Engine Family:Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
Exhaust Duration @ .050 in.:218
Exhaust Duration at .050 inch Lift:218
Exhaust Duration:262
Exhaust Valve Lift(in):0.462
Exhaust Valve Lift:0.462
Grind Number:XM256H
Intake Duration @ .050 in.:218
Intake Duration at .050 Inch Lift:212
Intake Duration:256
Intake Valve Lift(in):0.447
Intake Valve Lift:0.447
K-Kit Upgrade:K12-232-3
Lifter Type:Hydraulic Flat Tappet
Lifters Included:No
Lobe Separation:112
Part Number:cca12-232-3
RPM Range:1000-7000
SK-Kit Upgrade:SK12-232-3
Title:Xtreme Marine 212/218 Hydraulic Flat Cam for Chevrolet Small Block
Usage:Marine
Valve Springs Required:Yes

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

Data: v4.2 - Upd: 2026-09-27 16:38:59

Specifications

Product Attributes - Brand
COMP Cams
Product Attributes - Manufacturer's Part Number
12-232-3
Product Attributes - Part Type
Camshafts
Product Attributes - Product Line
COMP Cams Xtreme Marine Camshafts
Product Attributes - UPC
036584038313
Product Attributes - Cam Style
Hydraulic flat tappet
Product Attributes - Camshaft Use
Marine
Product Attributes - Basic Operating RPM Range
1,000-5,000
Product Attributes - Intake Duration at 050 inch Lift
212
Product Attributes - Exhaust Duration at 050 inch Lift
218
Product Attributes - Duration at 050 inch Lift
212 int./218 exh.
Product Attributes - Advertised Intake Duration
256
Product Attributes - Advertised Exhaust Duration
262
Product Attributes - Advertised Duration
256 int./262 exh.
Product Attributes - Intake Valve Lift with Factory Rocker Arm Ratio
0.447 in.
Product Attributes - Exhaust Valve Lift with Factory Rocker Arm Ratio
0.462 in.
Product Attributes - Valve Lift with Factory Rocker Arm Ratio
0.447 int./0.462 exh.
Product Attributes - Lobe Separation (degrees)
112
Product Attributes - Remanufactured
No
Product Attributes - Computer-Controlled Compatible
No
Product Attributes - Grind Number
CS XM 256H-12
Product Attributes - Valve Springs Required
Yes
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Comp Cams
StreetFX SKU cca12-232-3
SFX Item ID 4118608
Supplier Item Code 4118608
Manufacturer SKU 12-232-3
Manufacturer UPC 36584038313
Alternative References l46, l48, l65, lm1, lt-1, l82

Compatibility

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.

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