What supporting modifications are needed for this camshaft?

For optimal performance, COMP Cams recommends a minimum 9:1 compression ratio, a torque converter with at least a 2500 RPM stall speed, an upgraded intake manifold, proper rear-end gearing, and exhaust headers. These components help the camshaft achieve its intended performance goals.

What kind of idle can I expect with this camshaft?

This Mutha' Thumpr camshaft is designed for aggressive performance and will produce a rough, noticeable idle. This is a common characteristic of performance camshafts that prioritize power and airflow.

Is this camshaft legal for use in California?

No, this camshaft is not CARB approved and cannot be shipped to California due to emissions regulations. Please verify local emissions laws before purchasing.

COMP Cams Hydraulic Roller Camshaft 20-601-9 | COMP Cams

Name: COMP Cams Camshaft CRS 291T HR-107 MT T
Brand: COMP Cams
Price: 604.45 USD
Availability: InStock

COMP Cams Camshaft CRS 291T HR-107 MT T

$604.45

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 Mutha' Thumpr hydraulic roller camshaft for Chrysler LA 273-360 engines. Needs 9:1 compression and 2500+ stall for street/strip performance.

Key Features

Fits Chrysler 273, 318, 340, and 360 LA engines.
Hydraulic roller camshaft design for improved performance and durability.
Designed for street/strip performance applications.
Requires a minimum 9:1 compression ratio.
Recommends a 2500+ RPM stall speed torque converter.
Expect a rough idle characteristic of a performance camshaft.

⚠️ 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

When you're looking to get more out of your Chrysler LA-series engine, this COMP Cams Mutha' Thumpr camshaft is a solid option. You'll receive the camshaft itself, ready to be installed in your 273, 318, 340, or 360 cubic inch engine. This camshaft is designed for a street/strip application, meaning it's built to perform well both on the road and at the drag strip.

This is a hydraulic roller camshaft, which generally offers improved performance and durability over flat tappet designs. For this camshaft to work its best, COMP Cams recommends a minimum of 9:1 compression ratio. You'll also want to pair it with a torque converter that has at least a 2500 RPM stall speed, along with supporting modifications like an upgraded intake manifold, proper gearing, and headers. Expect a noticeable, rough idle with this camshaft, which is characteristic of its aggressive performance profile.

This camshaft fits a wide range of Chrysler, Dodge, and Plymouth vehicles from the mid-1960s through the late 1980s, including popular models like the Dodge Challenger, Charger, and Chrysler Cordoba. It's important to note that this part is not CARB approved and cannot be shipped to California. Ensure you have the necessary supporting components and knowledge for installation, as this is a performance upgrade that requires careful setup.