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COMP Cams Camshaft CS 304Rx-8

SKU: CCA12-853-9

Camshafts

CCA Camshafts...

COMP Cams Camshaft CS 304Rx-8

SKU: CCA12-853-9

Camshafts

CCA Camshafts...

A$1,145.85
Last Available from MFR. LAST ONE AVAILABLE from the manufacturer's distribution centre. Once sold, this item may not be immediately available again. The dispatch timeframe shown is an estimate based on historical orders for this part and is dependent on the manufacturer releasing the final available unit.
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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:313
Advertised Intake Duration:304
Amazon ASIN:B001G7EY08
Assembly Lubricant Included:No
Basic Operating RPM Range:7,200-9200
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 Roller
Camshaft Gear Attachment:3-Bolt
Camshaft Material:Billet Steel
Camshaft Series:Oval Track Xtreme RX (50mm Journal)
Description:Oval Track 271/280 Solid Roller Cam for Chevrolet Small Block
Engine Family:Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
Exhaust Duration @ .050 in.:280
Exhaust Duration at .050 inch Lift:280
Exhaust Duration:313
Exhaust Valve Lift(in):0.657
Exhaust Valve Lift:0.657
Grind Number:304RX-8
Intake Duration @ .050 in.:271
Intake Duration at .050 Inch Lift:271
Intake Duration:304
Intake Valve Lift(in):0.654
Intake Valve Lift:0.654
Lifter Type:Solid Roller
Lifters Included:No
Lobe Separation:108
Part Number:cca12-853-9
RPM Range:7000-13000
Title:Oval Track 271/280 Solid Roller 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: 2026-10-13 17:49:21

Specifications

Product Attributes - Brand
COMP Cams
Product Attributes - Manufacturer's Part Number
12-853-9
Product Attributes - Part Type
Camshafts
Product Attributes - Product Line
COMP Cams Xtreme RX Oval Track Roller Camshafts
Product Attributes - UPC
036584015758
Product Attributes - Cam Style
Solid roller, Retro-fit
Product Attributes - Camshaft Use
Drag race
Product Attributes - Basic Operating RPM Range
7,200-9,200
Product Attributes - Intake Duration at 050 inch Lift
271
Product Attributes - Exhaust Duration at 050 inch Lift
280
Product Attributes - Duration at 050 inch Lift
271 int./280 exh.
Product Attributes - Advertised Intake Duration
304
Product Attributes - Advertised Exhaust Duration
313
Product Attributes - Advertised Duration
304 int./313 exh.
Product Attributes - Intake Valve Lift with Factory Rocker Arm Ratio
0.654 in.
Product Attributes - Exhaust Valve Lift with Factory Rocker Arm Ratio
0.657 in.
Product Attributes - Valve Lift with Factory Rocker Arm Ratio
0.654 int./0.657 exh.
Product Attributes - Lobe Separation (degrees)
108
Product Attributes - Camshaft Gear Attachment
3-bolt
Product Attributes - Remanufactured
No
Product Attributes - Computer-Controlled Compatible
No
Product Attributes - Grind Number
CS 304RX-8
Product Attributes - Valve Springs Required
Yes
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Comp Cams
StreetFX SKU cca12-853-9
SFX Item ID 4118865
Supplier Item Code 4118865
Manufacturer SKU 12-853-9
Manufacturer UPC 36584015758
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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