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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...

Sale ends in Calculating...

A$654.89 A$655.08
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

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.

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.

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. 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: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
Lobe Separation:106
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

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

Data: v4.2 - Upd: 2026-10-17 04:24:58

Specifications

Product Attributes - Brand
COMP Cams
Product Attributes - Manufacturer's Part Number
12-686-47
Product Attributes - Part Type
Camshafts
Product Attributes - Product Line
COMP Cams Drag Race Camshafts
Product Attributes - UPC
036584083986
Product Attributes - Cam Style
Solid flat tappet
Product Attributes - Camshaft Use
Drag race
Product Attributes - Basic Operating RPM Range
4,000-7,000
Product Attributes - Intake Duration at 050 inch Lift
256
Product Attributes - Exhaust Duration at 050 inch Lift
267
Product Attributes - Duration at 050 inch Lift
256 int./267 exh.
Product Attributes - Advertised Intake Duration
290
Product Attributes - Advertised Exhaust Duration
304
Product Attributes - Advertised Duration
290 int./304 exh.
Product Attributes - Intake Valve Lift with Factory Rocker Arm Ratio
0.540 in.
Product Attributes - Exhaust Valve Lift with Factory Rocker Arm Ratio
0.534 in.
Product Attributes - Valve Lift with Factory Rocker Arm Ratio
0.540 int./0.534 exh.
Product Attributes - Lobe Separation (degrees)
106
Product Attributes - Remanufactured
No
Product Attributes - Computer-Controlled Compatible
No
Product Attributes - Grind Number
CS 47S 290B-6
Product Attributes - Valve Springs Required
Yes
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Comp Cams
StreetFX SKU cca12-686-47
SFX Item ID 4118806
Supplier Item Code 4118806
Manufacturer SKU 12-686-47
Manufacturer UPC 36584083986
Alternative References l46, l48, l65, lm1, lt-1, l82

Compatibility

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.

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