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COMP Cams Camshaft CS 290B-4

SKU: CCA12-610-5

Camshafts

CCA Camshafts...

COMP Cams Camshaft CS 290B-4

SKU: CCA12-610-5

Camshafts

CCA Camshafts...

Sale ends in Calculating...

A$727.99 A$814.12
Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.
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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:B000N5QC2M
Assembly Lubricant Included:Yes
Basic Operating RPM Range:3,500-6,800
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:Oval Track
Description:Oval Track 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:304-1
Exhaust Valve Lift(in):0.534
Exhaust Valve Lift:0.534
Grind Number:290B-4
Intake Duration @ .050 in.:255
Intake Duration at .050 Inch Lift:255
Intake Duration:290-1
Intake Valve Lift(in):0.540
Intake Valve Lift:0.54
Lifter Type:Solid Flat Tappet
Lifters Included:No
Lobe Separation:104
Part Number:cca12-610-5
RPM Range:3000-9000
Title:Oval Track 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: 2026-10-15 04:20:27

Specifications

Product Attributes - Brand
COMP Cams
Product Attributes - Manufacturer's Part Number
12-610-5
Product Attributes - Part Type
Camshafts
Product Attributes - Product Line
COMP Cams Oval Track Camshafts
Product Attributes - UPC
036584540038
Product Attributes - Cam Style
Solid flat tappet
Product Attributes - Camshaft Use
Drag race
Product Attributes - Basic Operating RPM Range
3,500-6,800
Product Attributes - Intake Duration at 050 inch Lift
255
Product Attributes - Exhaust Duration at 050 inch Lift
266
Product Attributes - Duration at 050 inch Lift
255 int./266 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)
104
Product Attributes - Intake Valve Lash
0.020 in.
Product Attributes - Exhaust Valve Lash
0.022 in.
Product Attributes - Remanufactured
No
Product Attributes - Computer-Controlled Compatible
No
Product Attributes - Grind Number
CS 290B-4
Product Attributes - Valve Springs Required
Yes
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Comp Cams
StreetFX SKU cca12-610-5
SFX Item ID 4118745
Supplier Item Code 4118745
Manufacturer SKU 12-610-5
Manufacturer UPC 36584540038
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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