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 sound is a hallmark of performance street camshafts and indicates the aggressive lobe profiles used.

Do I need a new torque converter to use this camshaft?

While this camshaft can function with a stock torque converter, COMP Cams recommends using a converter with a 2000+ RPM stall speed for optimal performance. This allows the engine to better utilize the camshaft's powerband.

What other parts might I need when installing this camshaft?

For a complete and effective installation, you may need to consider upgraded valve springs, pushrods, and potentially a new timing set. It's always best to consult the manufacturer's installation instructions for a full list of recommended components.

COMP Cams Thumpr Camshaft 34-600-9 for Ford 429-460

Name: COMP Cams Camshaft FF 283Th R7 Thumper
Brand: COMP Cams
SKU: comp-cams-comp-cams-camshaft-ff-283th-r7-thumper-t14-4391802
Price: 641.25 USD
Availability: BackOrder

COMP Cams Camshaft FF 283Th R7 Thumper

$641.25

On Backorder

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

Fits Ford 429 and 460 Big Block engines. COMP Cams Thumpr hydraulic roller camshaft for a choppy idle and improved street performance.

Key Features

Fits Ford Big Block 385 Series 429 and 460 engines.
Hydraulic roller camshaft design for improved performance and durability.
Intake duration of 227 degrees and exhaust duration of 241 degrees.
Produces a choppy, thumping idle characteristic of performance street cams.
Recommended for use with a 2000+ RPM stall torque converter and appropriate gearing for best results.
Suitable for high-performance street 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

If you're looking to give your Ford Big Block 429 or 460 engine a serious performance upgrade with a distinctive sound, this COMP Cams Thumpr camshaft is a solid choice. Designed for high-performance street applications, it's built to wake up your engine and give it that aggressive, choppy idle that many enthusiasts crave. This camshaft is compatible with a wide range of Ford and Lincoln vehicles from the late 1960s through the late 1970s, including models like the Ford LTD, Mercury Marquis, and Lincoln Continental.

This is a hydraulic roller camshaft, which means it offers improved performance and durability over older flat tappet designs. The specific grind, advertised as 227/241 degrees of intake/exhaust duration, is engineered to provide a noticeable bump in power for street driving. While it can work with a stock torque converter, COMP Cams recommends a 2000+ RPM stall converter and appropriate gearing to really unlock its full potential and achieve the best results. The signature choppy, thumping idle is a direct result of the camshaft's lobe separation angle and timing, making your vehicle sound as aggressive as it performs.

When installing this camshaft, it's important to follow COMP Cams' specific instructions to ensure proper break-in and optimal performance. Given the price point and performance nature of this part, it's often paired with other engine upgrades like stronger valve springs, pushrods, and potentially an upgraded fuel system to match the increased airflow. This camshaft is not CARB approved and cannot be shipped to California.