What kind of idle can I expect with this camshaft?

This Big Mutha' Thumpr camshaft is designed for aggressive street/strip performance and will produce a very rough idle. This is a common characteristic for cams with this duration and intended use.

What other modifications are recommended when installing this kit?

To maximize performance and ensure proper operation, COMP Cams recommends at least 9.5:1 compression, a torque converter with a 2800+ RPM stall speed, an upgraded intake manifold, appropriate rear-end gearing, and performance headers.

Does this kit come with everything needed for installation?

The kit includes the camshaft, hydraulic roller lifters, assembly lube for proper break-in, and decals. You will need to source other supporting modifications and potentially gaskets or seals separately.

COMP Cams Hydraulic Roller Cam & Lifter Kit CL34-602-9

Name: COMP Cams Cam & Lifter Kit FF 299Th R7
Brand: COMP Cams
SKU: comp-cams-comp-cams-cam-lifter-kit-ff-299th-r7-t14-4395928
Price: 1379.15 USD
Availability: BackOrder

COMP Cams Cam & Lifter Kit FF 299Th R7

$1379.15

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 Cam & Lifter Kit FF 299Th R7 for Ford 429/460. Designed for street/strip use with a very rough idle.

Key Features

Fits Ford Big Block 429 and 460 engines.
Hydraulic roller camshaft with 243/257 degree duration at .050 inch lift.
Designed for street/strip performance applications.
Requires 9.5:1 compression, 2800+ RPM stall converter, intake, gears, and headers.
Produces a very rough idle characteristic of performance cams.
Kit includes camshaft, lifters, assembly lube, and decals.

⚠️ 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 is the COMP Cams Big Mutha' Thumpr hydraulic roller camshaft and lifter kit, part number CL34-602-9, designed for Ford 429 and 460 Big Block engines. This kit is built for street and strip applications, aiming to give your engine a more aggressive feel and sound. It's a significant upgrade for enthusiasts looking to push their classic Ford or Lincoln's performance further.

The camshaft in this kit features a 243/257 degree duration at .050 inch lift, indicating a more aggressive profile that works best with a hydraulic roller valvetrain. To get the most out of this cam, you'll need at least 9.5:1 compression and a torque converter with a stall speed of 2800 RPM or higher. You'll also want to ensure your intake, gearing, and exhaust headers are up to the task. Expect a very rough idle with this setup, which is characteristic of performance cams of this size and intended use.

Included in the kit are the camshaft, hydraulic roller lifters, assembly lube to ensure proper break-in, and decals. This kit is a comprehensive package for those undertaking a performance engine build on their Ford 385 series engine. Please note that this part is not CARB approved and cannot be shipped to California. It is also subject to California's Prop 65 warning.