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COMP Cams Camshaft CB XS256S-10

SKU: CCA11-674-4

Camshafts

CCA Camshafts...

COMP Cams Camshaft CB XS256S-10

SKU: CCA11-674-4

Camshafts

CCA Camshafts...

A$703.55
Last Available from MFR. LAST ONE AVAILABLE from the manufacturer's distribution centre. Once sold, this item may not be immediately available again. The dispatch timeframe shown is an estimate based on historical orders for this part and is dependent on the manufacturer releasing the final available unit.

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Description

XE 218/224 SFTBBC

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.

Additional Information

Strong torque through low end and mid-range, good idle.

Application Summary

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

Part Type

Engine Camshaft

Product Overview

*Xtreme Energy Camshafts*
• Quicker opening lobe profiles deliver increased responsiveness & more area under the lift curve
• More vacuum allows an increase in duration for improved performance and assists power brakes
• Excellent performance in street carbureted applications
• Best performance with aftermarket intake manifolds, headers, lower gear ratios, etc.

Additional Application Notes
• Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Mech. Flat Tappet; 1000-5600rpm; Adv. Dur. 256 Int./262 Exh.; Valve Lift .527 Int./.532 Exh.; Lobe Angle 110 deg.;
• w/ W Engine VIN; Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Mech. Flat Tappet; 1000-5600rpm; Adv. Dur. 256 Int./262 Exh.; Valve Lift .527 Int./.532 Exh.; Lobe Angle 110 deg.;
• w/ W Engine VIN;

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Data: v4.2 - Upd: 2026-11-07 21:25:48

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:262
Advertised Intake Duration:256
Amazon ASIN:B000P5B6D0
Assembly Lubricant Included:Yes
Basic Operating RPM Range:1,000-5,600
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:Solid Flat Tappet
Cam and Lifter Kit Upgrade:CL11-674-4
Camshaft Gear Attachment:3-Bolt
Camshaft Material:Cast Iron
Camshaft Series:Xtreme Energy
Description:Xtreme Energy 218/224 Solid Flat Cam for Chevrolet Big Block 396-454
Engine Family:Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)
Exhaust Duration @ .050 in.:224
Exhaust Duration at .050 inch Lift:224
Exhaust Duration:262
Exhaust Valve Lift(in):0.532
Exhaust Valve Lift:0.532
Grind Number:XS256S
Intake Duration @ .050 in.:218
Intake Duration at .050 Inch Lift:218
Intake Duration:256
Intake Valve Lift(in):0.527
Intake Valve Lift:0.527
K-Kit Upgrade:K11-674-4
Lifter Type:Solid Flat Tappet
Lifters Included:No
Part Number:cca11-674-4
RPM Range:1000-7000
SK-Kit Upgrade:SK11-674-4
Title:Xtreme Energy 218/224 Solid Flat Cam for Chevrolet Big Block 396-454
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 19:00:24

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Comp Cams, Comp Cams (edelbrock)
StreetFX SKU cca11-674-4
SFX Item ID 4118495
Accounting SKU cca-11-674-4
Manufacturer SKU 11-674-4
Manufacturer UPC 036584070306
Alternative References 11-674-4, CCA-11-674-4

Camshaft, Mechanical Flat Tappet, Advertised Duration 256/262, Lift .527/.532, Chevy, Big Block, Each

COMP Cams Xtreme Energy camshafts employ the latest cam technology to provide maximum performance. Whether your use is off-roading, towing, or street performance, there's an Xtreme Energy cam available for you. By using an aggressive lobe profile, these cams provide better throttle response and more top-end horsepower than equivalent cams from other manufacturers—while delivering increased engine vacuum. Hundreds of models are available for fitment on vehicles from 1955 to the present. Select the cam designed for your application.

Product Attributes
BrandCOMP Cams
Manufacturer's Part Number11-674-4
Part TypeCamshafts
Product LineCOMP Cams Xtreme Energy Camshafts
UPC036584070306
Cam StyleSolid flat tappet
Camshaft UseStreet/Strip
Basic Operating RPM Range1,000-5,600
Intake Duration at 050 inch Lift218
Exhaust Duration at 050 inch Lift224
Duration at 050 inch Lift218 int./224 exh.
Advertised Intake Duration256
Advertised Exhaust Duration262
Advertised Duration256 int./262 exh.
Intake Valve Lift with Factory Rocker Arm Ratio0.527 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio0.532 in.
Valve Lift with Factory Rocker Arm Ratio0.527 int./0.532 exh.
Intake Valve Lash0.016 in.
Exhaust Valve Lash0.016 in.
RemanufacturedNo
Computer-Controlled CompatibleNo
Grind NumberCB XS256S-10
Valve Springs RequiredYes
QuantitySold individually.

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