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COMP Cams Camshaft CS 47S 290B-6

SKU: CCA12-686-47

Camshafts

CCA Camshafts...

COMP Cams Camshaft CS 47S 290B-6

SKU: CCA12-686-47

Camshafts

CCA Camshafts...

A$654.89
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

DR47 255/266 SFT SBC

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.

Additional Information

4000+ stall, 10.5:1 compression and up.

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

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.

Data: v4.2 - Upd: 2026-11-11 03:09:35

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:304
Advertised Intake Duration:290
Amazon ASIN:B001G7CX1U
Assembly Lubricant Included:Yes
Basic Operating RPM Range:4,000-7000
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
Camshaft Gear Attachment:3-Bolt
Camshaft Material:Cast Iron
Camshaft Series:Drag Race 4 and 7 Swap Firing Order
Description:Drag Race 4/7 Swap 255/266 Solid Flat Cam for Chevrolet Small Block
Engine Family:Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
Exhaust Duration @ .050 in.:266
Exhaust Duration at .050 inch Lift:266
Exhaust Duration:304
Exhaust Valve Lift(in):0.534
Exhaust Valve Lift:0.534
Grind Number:47S 290B-6
Intake Duration @ .050 in.:255
Intake Duration at .050 Inch Lift:255
Intake Duration:290
Intake Valve Lift(in):0.540
Intake Valve Lift:0.54
Lifter Type:Solid Flat Tappet
Lifters Included:No
Part Number:cca12-686-47
RPM Range:3000-9000
Title:Drag Race 4/7 Swap 255/266 Solid Flat Cam for Chevrolet Small Block
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 19:01:15

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Comp Cams, Comp Cams (edelbrock)
StreetFX SKU cca12-686-47
SFX Item ID 4118806
Accounting SKU cca-12-686-47
Manufacturer SKU 12-686-47
Manufacturer UPC 036584083986
Alternative References 12-686-47, CCA-12-686-47

Camshaft, Mechanical Flat Tappet, Advertised Duration 290/304, Lift .540/.534, Chevy, Small 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 Number12-686-47
Part TypeCamshafts
Product LineCOMP Cams Drag Race Camshafts
UPC036584083986
Cam StyleSolid flat tappet
Camshaft UseDrag race
Basic Operating RPM Range4,000-7,000
Intake Duration at 050 inch Lift256
Exhaust Duration at 050 inch Lift267
Duration at 050 inch Lift256 int./267 exh.
Advertised Intake Duration290
Advertised Exhaust Duration304
Advertised Duration290 int./304 exh.
Intake Valve Lift with Factory Rocker Arm Ratio0.540 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio0.534 in.
Valve Lift with Factory Rocker Arm Ratio0.540 int./0.534 exh.
RemanufacturedNo
Computer-Controlled CompatibleNo
Grind NumberCS 47S 290B-6
Valve Springs RequiredYes
QuantitySold individually.

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