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 306S-10

SKU: CCA12-225-4

Camshafts

CCA Camshafts...

COMP Cams Camshaft CS 306S-10

SKU: CCA12-225-4

Camshafts

CCA Camshafts...

A$632.09
Available from MFR. In stock at 1 location (10 available)

Added to cart

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

Description

Mag 260/260 SFT SBC

An older member of the COMP Cams grind family, the Magnum series of camshafts offers excellent performance gains over stock without the added wear and tear associated with more aggressive camshafts. Ideal for use with higher compression ratio engines that need to bleed off compression, the magnum series performs its best when static compression is 9.5:1+ and with an aftermarket higher stall torque converter. Delivering excellent high RPM power, while not needlessly abusing valve train parts, the Magnum grind family is the perfect choice for performance engines equipped with mild ratio rocker arms and traditional performance valve springs.

Additional Information

Street/strip. 3500+ stall, 10.5:1 compression. Low gears, headers and intake. Racy idle.

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.

Additional Application Notes
• Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Mech. Flat Tappet; 3000-7000rpm; Adv. Dur. 306 Int./Exh.; Valve Lift .555 Int./Exh.; Lobe Angle 110 deg.;
• w/ H Engine VIN;
• w/ H Engine VIN; Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Mech. Flat Tappet; 3000-7000rpm; Adv. Dur. 306 Int./Exh.; Valve Lift .555 Int./Exh.; Lobe Angle 110 deg.;
• w/ Y Engine VIN;
• w/ Y Engine VIN; Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Mech. Flat Tappet; 3000-7000rpm; Adv. Dur. 306 Int./Exh.; Valve Lift .555 Int./Exh.; Lobe Angle 110 deg.;
• From 1985-1998 Chevrolet introduced the factory roller Small Block into GM cars and trucks. Verify whether or not your vehicle came with a factory roller camshaft. If your vehicle was equipped with a roller camshaft, look to our camshafts and kits that start with "08-".
• w/ G Engine VIN; Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Mech. Flat Tappet; 3000-7000rpm; Adv. Dur. 306 Int./Exh.; Valve Lift .555 Int./Exh.; Lobe Angle 110 deg.;
• w/ G Engine VIN; From 1985-1998 Chevrolet introduced the factory roller Small Block into GM cars and trucks. Verify whether or not your vehicle came with a factory roller camshaft. If your vehicle was equipped with a roller camshaft, look to our camshafts and kits that start with "08-".
• w/ U Engine VIN;
• w/ U Engine VIN; Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Mech. Flat Tappet; 3000-7000rpm; Adv. Dur. 306 Int./Exh.; Valve Lift .555 Int./Exh.; Lobe Angle 110 deg.;
• w/ T Engine VIN;
• w/ T Engine VIN; Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Mech. Flat Tappet; 3000-7000rpm; Adv. Dur. 306 Int./Exh.; Valve Lift .555 Int./Exh.; Lobe Angle 110 deg.;
• w/ L Engine VIN; Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Mech. Flat Tappet; 3000-7000rpm; Adv. Dur. 306 Int./Exh.; Valve Lift .555 Int./Exh.; Lobe Angle 110 deg.;
• w/ L Engine VIN;
• w/ X Engine VIN; Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Mech. Flat Tappet; 3000-7000rpm; Adv. Dur. 306 Int./Exh.; Valve Lift .555 Int./Exh.; Lobe Angle 110 deg.;
• w/ X Engine VIN;
• w/ R Engine VIN;
• w/ R Engine VIN; Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Mech. Flat Tappet; 3000-7000rpm; Adv. Dur. 306 Int./Exh.; Valve Lift .555 Int./Exh.; Lobe Angle 110 deg.;
• w/ K Engine VIN;
• w/ K Engine VIN; Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Mech. Flat Tappet; 3000-7000rpm; Adv. Dur. 306 Int./Exh.; Valve Lift .555 Int./Exh.; Lobe Angle 110 deg.;
• w/ T Engine VIN; w/ K Engine VIN; w/ J Engine VIN;
• w/ T Engine VIN; w/ K Engine VIN; w/ J Engine VIN; Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Mech. Flat Tappet; 3000-7000rpm; Adv. Dur. 306 Int./Exh.; Valve Lift .555 Int./Exh.; Lobe Angle 110 deg.;
• w/ J Engine VIN;
• w/ J Engine VIN; Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Mech. Flat Tappet; 3000-7000rpm; Adv. Dur. 306 Int./Exh.; Valve Lift .555 Int./Exh.; Lobe Angle 110 deg.;
• w/ E Engine VIN;
• w/ E Engine VIN; Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Mech. Flat Tappet; 3000-7000rpm; Adv. Dur. 306 Int./Exh.; Valve Lift .555 Int./Exh.; Lobe Angle 110 deg.;
• w/ M Engine VIN;
• w/ V Engine VIN;
• w/ V Engine VIN; Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle Mech. Flat Tappet; 3000-7000rpm; Adv. Dur. 306 Int./Exh.; Valve Lift .555 Int./Exh.; Lobe Angle 110 deg.;
• w/ G Engine VIN;

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Data: v4.2 - Upd: 2026-11-07 21:25:45

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:306
Advertised Intake Duration:306
Amazon ASIN:B000CEQDCI
Assembly Lubricant Included:Yes
Basic Operating RPM Range:3,000-7000
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
Cam and Lifter Kit Upgrade:CL12-225-4
Camshaft Gear Attachment:3-Bolt
Camshaft Material:Cast Iron
Camshaft Series:Magnum
Description:Magnum 260/260 Solid Flat Cam for Chevrolet Small Block
Engine Family:Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
Exhaust Duration @ .050 in.:260
Exhaust Duration at .050 inch Lift:260
Exhaust Duration:306
Exhaust Valve Lift(in):0.555
Exhaust Valve Lift:0.555
Grind Number:306S
Intake Duration @ .050 in.:260
Intake Duration at .050 Inch Lift:260
Intake Duration:306
Intake Valve Lift(in):0.555
Intake Valve Lift:0.555
K-Kit Upgrade:K12-225-4
Lifter Type:Solid Flat Tappet
Lifters Included:No
Part Number:cca12-225-4
RPM Range:3000-9000
SK-Kit Upgrade:SK12-225-4
Title:Magnum 260/260 Solid Flat Cam for Chevrolet Small Block
Usage:Street/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 19:00:39

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Comp Cams, Comp Cams (edelbrock)
StreetFX SKU cca12-225-4
SFX Item ID 4118604
Accounting SKU cca-12-225-4
Manufacturer SKU 12-225-4
Manufacturer UPC 036584540069
Alternative References 12-225-4, CCA-12-225-4

Camshaft, Mechanical Flat Tappet, Advertised Duration 306/306, Lift .555/.555, Chevy, Small Block, Each

COMP Cams Magnum solid lifter camshafts are specifically designed for the street enthusiast looking for more power and that Pro Street sound. Whether your choice would be the 270s with low-speed torque and noticeable idle, or the 306s for larger cubic inch engines with tremendous high-rpm power and radical idle, one of these Magnum series cams will fit your engine's needs.

Product Attributes
BrandCOMP Cams
Manufacturer's Part Number12-225-4
Part TypeCamshafts
Product LineCOMP Cams Magnum Solid Camshafts
UPC036584540069
Cam StyleSolid flat tappet
Camshaft UseStreet/Strip
Basic Operating RPM Range3,000-7,000
Intake Duration at 050 inch Lift260
Exhaust Duration at 050 inch Lift260
Duration at 050 inch Lift260 int./260 exh.
Advertised Intake Duration306
Advertised Exhaust Duration306
Advertised Duration306 int./306 exh.
Intake Valve Lift with Factory Rocker Arm Ratio0.555 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio0.555 in.
Valve Lift with Factory Rocker Arm Ratio0.555 int./0.555 exh.
Intake Valve Lash0.022 in.
Exhaust Valve Lash0.022 in.
RemanufacturedNo
Computer-Controlled CompatibleNo
Grind NumberCS 306S-10
Valve Springs RequiredYes
QuantitySold individually.

Compatibility

Loading compatibility information...

Keep shopping

More from Comp Cams