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COMP Cams Camshaft CB 47S 321-R12

SKU: CCA11-747-14

Camshafts

CCA Camshafts...

COMP Cams Camshaft CB 47S 321-R12

SKU: CCA11-747-14

Camshafts

CCA Camshafts...

A$1,311.31
Limited Availability from MFR In stock at 2 locations (more than 10 available)

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Description

Camshaft - Drag Race - Mechanical Roller - 4/7 Swap - Lift 0.748 / 0.748 in - Duration 321 / 336 - 112 LSA - 5000 / 8500 RPM - Big Block Chevy - Each

DR47 284/296 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

Fast Bracket, good heads, 13:1+ compression., 5000+ stall, small N2O.

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:336
Advertised Intake Duration:321
Amazon ASIN:B001NESZXQ
Assembly Lubricant Included:No
Basic Operating RPM Range:5,000-8,500
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 4 and 7 Swap Firing Order
Description:Drag Race 4/7 Swap 284/296 Solid Roller Cam for Chevrolet Big Block 396-454
Engine Family:Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)
Exhaust Duration @ .050 in.:296
Exhaust Duration at .050 inch Lift:296
Exhaust Duration:336
Exhaust Valve Lift(in):0.748
Exhaust Valve Lift:0.748
Grind Number:47S 321R12
Intake Duration @ .050 in.:286
Intake Duration at .050 Inch Lift:286
Intake Duration:321
Intake Valve Lift(in):0.748
Intake Valve Lift:0.748
Lifter Type:Solid Roller
Lifters Included:No
Part Number:cca11-747-14
RPM Range:3000-9000
Title:Drag Race 4/7 Swap 284/296 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 cca11-747-14
SFX Item ID 4118541
Accounting SKU cca-11-747-14
Manufacturer SKU 11-747-14
Manufacturer UPC 036584084068
Alternative References 11-747-14, CCA-11-747-14, COM11-747-14

Camshaft, Mechanical Roller Tappet, Advertised Duration 321/336, Lift .748/.748, Chevy, Big Block, Each

COMP Cams drag race camshafts are offered in four styles: hydraulic flat tappet, hydraulic roller tappet, mechanical roller tappet, and mechanical flat tappet. These cams are ideal for the performance demands of the dragstrip, as well as street, strip, Circle Track, and other applications. Over a hundred models are available; choose the camshaft designed for your vehicle and engine family.

Product Attributes
BrandCOMP Cams
Manufacturer's Part Number11-747-14
Part TypeCamshafts
Product LineCOMP Cams Drag Race Camshafts
UPC036584084068
Cam StyleSolid roller, Retro-fit
Camshaft UseDrag race
Basic Operating RPM Range5,000-8,500
Intake Duration at 050 inch Lift286
Exhaust Duration at 050 inch Lift296
Duration at 050 inch Lift286 int./296 exh.
Advertised Intake Duration321
Advertised Exhaust Duration336
Advertised Duration321 int./336 exh.
Intake Valve Lift with Factory Rocker Arm Ratio0.748 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio0.748 in.
Valve Lift with Factory Rocker Arm Ratio0.748 int./0.748 exh.
Intake Valve Lash0.026 in.
Exhaust Valve Lash0.028 in.
RemanufacturedNo
Computer-Controlled CompatibleNo
Grind Number47S 321-R12
Valve Springs RequiredYes
QuantitySold individually.
NotesWith 18736542 firing order. Has a 4 and 7 firing order swap. Requires upgraded gear, thrust button, and wear plate.

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