What kind of idle can I expect with this camshaft?

This COMP Cams camshaft is designed for performance street/strip use and will produce a very rough idle. This is a common characteristic of aggressive camshaft profiles that prioritize airflow for higher RPM power.

What other modifications are needed for this camshaft?

The manufacturer states that engine modification is mandatory for this camshaft. This typically includes the installation of aftermarket cylinder heads to properly complement the cam's profile and achieve optimal performance.

Can this camshaft be shipped to California?

No, this camshaft is not CARB approved and cannot be shipped to California. It is important to check local emissions regulations before purchasing performance engine components.

COMP Cams Flathead Camshaft 41-602-7 - Ford Flathead V8

Name: COMP Cams Camshaft Flathead 283T H-107
Brand: COMP Cams
Price: 728.86 USD
Availability: InStock

COMP Cams Camshaft Flathead 283T H-107

$728.86

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 camshaft for Ford Flathead 239/255 engines. Offers a very rough idle for street/strip builds.

Key Features

Fits 1949-1953 Ford and 1950-1953 Mercury vehicles with Flathead 239/255 engines.
Solid lifter camshaft with 243/257 duration.
Designed for street/strip applications.
Requires significant engine modification, including aftermarket heads.
Produces a very rough idle characteristic of performance builds.
Not CARB approved and cannot ship to California.

⚠️ 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 camshaft is designed for Ford Flathead engines, specifically the 239 and 255 cubic inch displacements. It's part of the "Big Mutha' Thumpr" series, intended for street/strip applications where significant engine modification is expected. You'll get a very rough idle with this cam, which is typical for performance builds aiming for maximum power output. This camshaft fits a range of classic Ford and Mercury vehicles from the late 1940s and early 1950s, including models like the Ford Customline, Mercury Monterey, and Ford Country Squire.

The 243/257 duration specs indicate a solid lifter camshaft that requires careful installation and setup. For this cam to perform as intended, you'll need to make other engine modifications, such as installing aftermarket cylinder heads. This isn't a simple drop-in part; it's for builders who are committed to a full engine overhaul for enhanced performance. The rough idle is a direct result of the aggressive cam profile, which keeps the valves open longer to allow more air and fuel into the cylinders, and exhaust out, especially at higher RPMs.

When installing this camshaft, ensure you follow the manufacturer's detailed instructions, as proper valve timing and clearance are critical for both performance and engine longevity. Because this camshaft is not CARB approved, it cannot be shipped to California. This is a serious performance part for enthusiasts looking to extract the most from their Flathead V8.