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COMP Cams Camshaft CB X4 270H-11

SKU: CCA11-239-3

Camshafts

CCA Camshafts...

COMP Cams Camshaft CB X4 270H-11

SKU: CCA11-239-3

Camshafts

CCA Camshafts...

A$687.41
Available from MFR. In stock at 1 location (only 1 available)

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Description

BBC - 1965-66 396 c.i.d. 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

*Xtreme 4x4 Camshafts* * Improved throttle response and increased low & mid-range RPM horsepower for towing and off-road * Designed for use with common restrictive factory exhaust systems, including OEM exhaust manifolds

Product Details

Advertised Exhaust Duration:278
Advertised Intake Duration:270
Amazon ASIN:B000R9Z60S
Assembly Lubricant Included:Yes
Basic Operating RPM Range:1,600-5,800
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:CL11-239-3
Camshaft Gear Attachment:3-Bolt
Camshaft Material:Cast Iron
Camshaft Series:Xtreme 4x4
Description:Xtreme 4x4 226/234 Hydraulic Flat Cam 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
Grind Number:X4 270H
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
K-Kit Upgrade:K11-239-3
Lifter Type:Hydraulic Flat Tappet
Lifters Included:No
Lobe Separation:111
Part Number:cca11-239-3
RPM Range:1000-7000
SK-Kit Upgrade:SK11-239-3
Title:Xtreme 4x4 226/234 Hydraulic Flat Cam for Chevrolet Big Block 396-454
Usage:Street/Performance
Valve Springs Required:Yes

Application Summary

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

Part Type

Engine Camshaft

Data: v4.2 - Upd: 2026-10-26 18:37:03

Specifications

Product Attributes - Brand
COMP Cams
Product Attributes - Manufacturer's Part Number
11-239-3
Product Attributes - Part Type
Camshafts
Product Attributes - Product Line
COMP Cams Xtreme Energy 4x4 Camshafts
Product Attributes - UPC
036584038580
Product Attributes - Cam Style
Hydraulic flat tappet
Product Attributes - Camshaft Use
Street/Strip
Product Attributes - Basic Operating RPM Range
1,600-5,800
Product Attributes - Intake Duration at 050 inch Lift
226
Product Attributes - Exhaust Duration at 050 inch Lift
234
Product Attributes - Duration at 050 inch Lift
226 int./234 exh.
Product Attributes - Advertised Intake Duration
270
Product Attributes - Advertised Exhaust Duration
278
Product Attributes - Advertised Duration
270 int./278 exh.
Product Attributes - Intake Valve Lift with Factory Rocker Arm Ratio
0.544 in.
Product Attributes - Exhaust Valve Lift with Factory Rocker Arm Ratio
0.564 in.
Product Attributes - Valve Lift with Factory Rocker Arm Ratio
0.544 int./0.564 exh.
Product Attributes - Lobe Separation (degrees)
111
Product Attributes - Remanufactured
No
Product Attributes - Computer-Controlled Compatible
No
Product Attributes - Grind Number
CB X4 270H-11
Product Attributes - Valve Springs Required
Yes
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Comp Cams
StreetFX SKU cca11-239-3
SFX Item ID 4118400
Supplier Item Code 4118400
Manufacturer SKU 11-239-3
Manufacturer UPC 36584038580
Alternative References c10, s10, COM11-239-3, 270H-11

Compatibility

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

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