What is the recommended break-in procedure for this camshaft?

For hydraulic flat tappet camshafts like this one, a specific break-in procedure is critical. You'll need to run the engine at approximately 2000-2500 RPM for about 20-30 minutes immediately after installation. This ensures the lifters properly lubricate and seat against the cam lobes.

Do I need to upgrade my valve springs with this camshaft?

This camshaft is designed to work with stock valve springs in many applications. However, it's always recommended to verify your existing valve spring specifications against the camshaft's lift requirements to ensure proper operation and prevent potential damage.

What other components are typically needed when installing a new camshaft?

When replacing a camshaft, it's good practice to also replace the lifters, timing set, and potentially the oil pump and pushrods. Ensure you have assembly lube specifically designed for camshafts and lifters for proper installation.

COMP Cams Magnum Muscle Camshaft 20-309-4 for Chrysler LA En

Name: COMP Cams Camshaft CRS 268Ah-10
Brand: COMP Cams
Price: 330.15 USD
Availability: InStock

COMP Cams Camshaft CRS 268Ah-10

$330.15

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

COMP Cams Magnum Muscle camshaft for Chrysler 273-360 LA engines. Features a 222/226 duration for improved performance.

Key Features

Fits Chrysler 273, 318, 340 and 360 LA engines.
Hydraulic flat tappet design for ease of installation and maintenance.
Intake duration of 222 degrees at .050 lift.
Exhaust duration of 226 degrees at .050 lift.
Designed for improved mid-range and upper RPM power.
Suitable for street performance applications.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

Product Details

This COMP Cams Magnum Muscle camshaft, with its 222 degrees of intake duration and 226 degrees of exhaust duration at .050 lift, is built for Chrysler's LA-series V8 engines. It's a hydraulic flat tappet design, meaning it uses standard lifters and oiling systems, making it a popular choice for those looking to upgrade from a stock camshaft without major modifications. This cam is designed to wake up engines like the 273, 318, 340, and 360 cubic inch Mopar small blocks.

The design of this camshaft aims for a noticeable improvement in power, particularly in the mid-range and upper RPMs, giving your engine a more aggressive feel. It's well-suited for street performance applications where you want more grunt for acceleration and a stronger pull through the gears. While it's a step up from factory specifications, it's still intended to work with stock valve springs in many applications, though checking compatibility with your existing valvetrain is always a good idea. This camshaft fits a wide range of vehicles, including models like the Dodge Challenger, Plymouth Barracuda, and Chrysler Cordoba from the 1960s and 70s.

When installing a camshaft like this, it's crucial to follow the manufacturer's break-in procedure carefully to ensure proper seating of the new flat tappet lifters. This typically involves running the engine at a specific RPM for a set period shortly after installation. Ensure you have fresh oil and a compatible oil filter ready for the job.