What kind of idle can I expect with this camshaft?

This COMP Cams Xtreme Energy XR274R-1 camshaft is known for producing a noticeable, lopey idle. This is a common characteristic of performance camshafts designed for aggressive street and strip applications.

What supporting modifications are recommended for this cam kit?

For optimal performance, this kit requires approximately 9.5:1 compression and a torque converter with a stall speed of 2800 RPM or higher. It's also recommended to ensure your engine's fuel, ignition, and cooling systems are capable of handling the demands of a high-performance camshaft.

Does this kit come with everything needed for installation?

The kit includes the camshaft, solid roller lifters, assembly lube for proper break-in, and decals. It is recommended to consult the manufacturer's instructions for any additional valvetrain components or hardware that may be necessary for your specific application.

COMP Cams Solid Roller Cam & Lifter Kit CL20-742-9

Name: COMP Cams Cam & Lifter Kit CRS XR274R-1
Brand: COMP Cams
Price: 1319.40 USD
Availability: InStock

COMP Cams Cam & Lifter Kit CRS XR274R-1

$1319.40

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 Xtreme Energy XR274R-1 solid roller cam and lifter kit for Chrysler 273-360 LA engines. Serious street/strip use.

Key Features

Fits Chrysler 273, 318, 340, and 360 LA-series engines.
Xtreme Energy XR274R-1 solid roller camshaft with 236°/242° duration at .050" lift.
Includes camshaft, solid roller lifters, assembly lube, and decals.
Designed for serious street/strip use with a lopey idle.
Requires approximately 9.5:1 compression and a 2800+ RPM stall speed torque converter.
Solid roller design is suited for high RPM and aggressive valve events.

⚠️ 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 Xtreme Energy XR274R-1 solid roller camshaft and lifter kit is built for serious street and strip applications, designed for Chrysler 273, 318, 340, and 360 cubic inch LA-series engines. The camshaft features a 236-degree intake duration and 242-degree exhaust duration at .050 inch lift, paired with solid roller lifters that allow for higher RPMs and more aggressive valve events compared to hydraulic lifters. This combination is intended for builds with approximately 9.5:1 compression and requires a torque converter with a stall speed of 2800 RPM or higher to take full advantage of its performance characteristics.

The kit includes the camshaft, solid roller lifters, assembly lube to ensure proper break-in, and decals. This setup is known for producing a noticeable, lopey idle, a characteristic often desired in performance engines. The solid roller design means it's built for high-stress, high-RPM operation, making it a popular choice for those looking to extract maximum power from their Mopar V8. Installation of a solid roller camshaft and lifters requires careful attention to detail and often specific valvetrain components to ensure longevity and optimal performance.

This kit is intended for performance builds where aggressive engine operation is the goal. It's important to ensure your engine's supporting systems, including the fuel system, ignition, and cooling, are up to the task. Due to its performance nature and specific requirements, this kit is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's instructions for proper installation and break-in procedures.