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COMP Cams Camshaft CB 318Rxh-16

SKU: CCA11-742-9

Camshafts

CCA Camshafts...

COMP Cams Camshaft CB 318Rxh-16

SKU: CCA11-742-9

Camshafts

CCA Camshafts...

A$1,224.56
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

DR 285/312 SRlrBBC

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

Very large cubic inch and nitrous applications.

Application Summary

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

Part Type

Engine Camshaft

Product Overview

Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572

Data: v4.2 - Upd: 2026-11-07 21:25:47

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:352
Advertised Intake Duration:318
Amazon ASIN:B000P5G5Z4
Assembly Lubricant Included:No
Basic Operating RPM Range:5,200-9200
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 Roller
Camshaft Gear Attachment:3-Bolt
Camshaft Material:Billet Steel
Camshaft Series:Drag Race Xtreme RX
Description:Drag Race 285/312 Solid Roller Cam for Chevrolet Big Block 396-454
Engine Family:Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)
Exhaust Duration @ .050 in.:312
Exhaust Duration at .050 inch Lift:312
Exhaust Duration:352
Exhaust Valve Lift(in):0.81
Exhaust Valve Lift:0.81
Grind Number:318RXH-16
Intake Duration @ .050 in.:285
Intake Duration at .050 Inch Lift:285
Intake Duration:318
Intake Valve Lift(in):0.463
Intake Valve Lift:0.463
Lifter Type:Solid Roller
Lifters Included:No
Part Number:cca11-742-9
RPM Range:5000-13000
Title:Drag Race 285/312 Solid Roller Cam for Chevrolet Big Block 396-454
Usage:Strip
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 19:00:29

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Comp Cams, Comp Cams (edelbrock)
StreetFX SKU cca11-742-9
SFX Item ID 4118536
Accounting SKU cca-11-742-9
Manufacturer SKU 11-742-9
Manufacturer UPC 036584071884
Alternative References 11-742-9, CCA-11-742-9

Camshaft, Mechanical Roller, Duration 318 Int./352 Exh., Lift 0.463 Int./0.810 Exh., Lobe Separation 116, Chevy, BBC, 396-454, Each

These COMP Cams Drag Race Xtreme RX roller camshafts are designed with racers in mind. Their ability to withstand high valve spring pressures, while having the most aggressive lobe profiles, makes these cams a favorite among engine builders wanting maximum performance at high rpm. These camshafts are designed to use roller lifters that reduce power-robbing friction to make the most of your high performance engine. These COMP Cams Drag Race Xtreme RX roller camshafts will give you serious street performance, or the all-out race motor power and sound you want, without sacrificing reliability.

Product Attributes
BrandCOMP Cams
Manufacturer's Part Number11-742-9
Part TypeCamshafts
Product LineCOMP Cams Drag Race Xtreme RX Roller Camshafts
UPC036584071884
Cam StyleSolid roller, Retro-fit
Camshaft UseDrag race
Basic Operating RPM Range5,200-9,200
Intake Duration at 050 inch Lift285
Exhaust Duration at 050 inch Lift312
Duration at 050 inch Lift285 int./312 exh.
Advertised Intake Duration318
Advertised Exhaust Duration352
Advertised Duration318 int./352 exh.
Intake Valve Lift with Factory Rocker Arm Ratio0.463 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio0.810 in.
Valve Lift with Factory Rocker Arm Ratio0.463 int./0.810 exh.
Camshaft Gear Attachment3-bolt
RemanufacturedNo
Computer-Controlled CompatibleNo
Grind NumberCB 318RXH-16
Valve Springs RequiredYes
QuantitySold individually.

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