What kind of idle can I expect with this camshaft?

This COMP Cams Thumpr camshaft is specifically designed to produce a choppy, thumping idle. This aggressive sound is a signature characteristic of the Thumpr series and is popular for performance street applications.

What is the advantage of a hydraulic roller camshaft?

Hydraulic roller camshafts generally offer reduced friction and wear compared to traditional flat tappet camshafts. This can lead to improved durability and potentially better performance over the life of the engine.

What other parts are recommended for installing this camshaft?

For optimal performance, it is recommended to use a torque converter with a stall speed of 2000 RPM or higher, along with suitable rear-end gearing. Always refer to the manufacturer's installation instructions for any specific hardware or procedure requirements.

COMP Cams Hydraulic Roller Camshaft 23-600-9

Name: COMP Cams Camshaft CRB3 283Th R7 Thumper
Brand: COMP Cams
SKU: comp-cams-comp-cams-camshaft-crb3-283th-r7-thumper-t14-4391236
Price: 616.59 USD
Availability: BackOrder

COMP Cams Camshaft CRB3 283Th R7 Thumper

$616.59

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 Thumpr camshaft for Chrysler 383-440 engines. Delivers a choppy idle and improved performance.

Key Features

Fits Chrysler B/RB 383, 400, 413, 426 Wedge, and 440 engines.
Hydraulic roller camshaft design for improved durability and reduced friction.
Intake/Exhaust Duration at .050 inch lift: 227 degrees / 241 degrees.
Produces a choppy, thumping idle characteristic of performance camshafts.
Best performance achieved with a 2000+ RPM stall torque converter and appropriate gearing.
Features a 3-bolt camshaft design common to Mopar B/RB engines.

⚠️ 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

If you're looking to give your Chrysler 383, 400, 413, 426 Wedge, or 440 engine a more aggressive sound and feel, this COMP Cams Thumpr camshaft is a solid option. It's designed to work with a variety of Chrysler B and RB series engines, offering a noticeable change in both performance and exhaust note. This camshaft is specifically engineered to produce that classic choppy, thumping idle that many enthusiasts look for in a performance build.

This is a hydraulic roller camshaft, which generally means less friction and better durability compared to flat tappet designs. The 227/241 degree intake/exhaust duration at .050 lift is tuned for a high-performance street application. While it can work with a stock torque converter, you'll see improved results and a more consistent power band if you pair it with a 2000+ RPM stall converter and appropriate rear-end gearing. This camshaft is a direct fit for many Chrysler, Dodge, and Plymouth vehicles from the late 1950s through the late 1970s, including popular models like the Dodge Charger, Plymouth Barracuda, and Chrysler New Yorker.

When installing this camshaft, remember that it features a 3-bolt camshaft design, which is standard for these Mopar engines. It's important to follow the manufacturer's installation instructions carefully to ensure proper timing and operation. This camshaft is intended for off-road use and is not CARB approved, so it cannot be shipped to California.