Street. Track. Everything between.
07 3276 7829
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

COMP Cams Camshaft CS 285Tk-R6

SKU: CCA12-859-9

Camshafts

CCA Camshafts...

COMP Cams Camshaft CS 285Tk-R6

SKU: CCA12-859-9

Camshafts

CCA Camshafts...

A$1,153.71
Limited Availability from MFR In stock at 1 location (2 available)

Added to cart

We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

Camshaft - Oval Track Xtreme TK - Mechanical Roller - Lift 0.645 / 0.637 in - Duration 285 / 298 - 106 LSA - 3500 / 7600 RPM - Small Block Chevy - Each

OT 257/266 SRlrSBC

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. WARNING: Camshaft Optimized for use with a Melanized or Nitrided distributor Gear. Not compatible with cast or Steel Gears without similar surface treatments. Failure to utilize the proper distributor Gear will void all warranties and/or return policies.

Additional Information

3/8-5/8 mile dry slick. 355-406 Late Model. Great small cubic inch IMCA.

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: 2026-11-07 21:25:14

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:298
Advertised Intake Duration:285
Amazon ASIN:B001O09PVK
Assembly Lubricant Included:No
Basic Operating RPM Range:3,500-7600
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:Oval Track Xtreme TK
Description:Oval Track 257/266 Solid Roller 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:298
Exhaust Valve Lift(in):0.637
Exhaust Valve Lift:0.637
Grind Number:285TKR-6
Intake Duration @ .050 in.:257
Intake Duration at .050 Inch Lift:257
Intake Duration:285
Intake Valve Lift(in):0.645
Intake Valve Lift:0.645
Lifter Type:Solid Roller
Lifters Included:No
Part Number:cca12-859-9
RPM Range:3000-9000
Title:Oval Track 257/266 Solid Roller 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 19:01:25

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Comp Cams, Comp Cams (edelbrock)
StreetFX SKU cca12-859-9
SFX Item ID 4118871
Accounting SKU cca-12-859-9
Manufacturer SKU 12-859-9
Manufacturer UPC 036584015437
Alternative References 12-859-9, CCA-12-859-9, COM12-859-9

Camshaft, Oval Track, Mechanical Roller Tappet, RPM Range 3,500-7,600, Advertised Duration 285/298, Chevrolet, Each

COMP Cams oval track camshafts are designed specifically for racing applications. They are available to complement a variety of engine configurations, track lengths, and conditions--simply order the model that fits the needs of your particular make and model. Before you start the next oval track race, install the winning camshaft edge from COMP Cams.

Product Attributes
BrandCOMP Cams
Manufacturer's Part Number12-859-9
Part TypeCamshafts
Product LineCOMP Cams Oval Track Camshafts
UPC036584015437
Cam StyleSolid roller, Retro-fit
Camshaft UseDrag race
Camshaft Manufacturers Description355-406 late model. Great small cube IMCA.
Basic Operating RPM Range3,500-7,600
Intake Duration at 050 inch Lift257
Exhaust Duration at 050 inch Lift266
Duration at 050 inch Lift257 int./266 exh.
Advertised Intake Duration285
Advertised Exhaust Duration298
Advertised Duration285 int./298 exh.
Intake Valve Lift with Factory Rocker Arm Ratio0.645 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio0.637 in.
Valve Lift with Factory Rocker Arm Ratio0.645 int./0.637 exh.
Camshaft Gear Attachment3-bolt
RemanufacturedNo
Computer-Controlled CompatibleNo
Grind NumberCS 285TK-R6
Valve Springs RequiredYes
QuantitySold individually.

Compatibility

Loading compatibility information...

Keep shopping

More from Comp Cams