What kind of idle can I expect with this camshaft?

This camshaft is designed to produce a radical idle. This means the engine will have a noticeable, rougher idle sound, which is characteristic of performance camshafts intended for racing or modified street applications.

What compression ratio and stall speed are recommended for this camshaft?

For optimal performance, COMP Cams recommends using this camshaft with an 11:1 compression ratio and a 4000 RPM stall speed torque converter. It also pairs well with 4.10 or lower rear axle gears, provided you have adequate intake and exhaust systems.

Can this camshaft be used for daily driving?

This camshaft is intended for limited street use or bracket racing. While it can be used on the street, it is not optimized for daily driving and will produce a radical idle and may require specific supporting modifications like a higher stall converter and appropriate compression.

COMP Cams Hydraulic Camshaft 31-331-4 | Ford Small Block

Name: COMP Cams Camshaft FS 305H-10
Brand: COMP Cams
Price: 273.88 USD
Availability: InStock

COMP Cams Camshaft FS 305H-10

$273.88

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

COMP Cams Magnum/Drag Race camshaft for Ford 221-302 engines. Hydraulic flat tappet design for limited street use or bracket racing.

Key Features

Fits Ford 221, 255, 260, 289, and 302 small block engines.
Hydraulic flat tappet design suitable for limited street use or bracket racing.
Features 253 degrees of intake and 253 degrees of exhaust duration.
Designed to work with 11:1 compression and a 4000 RPM stall speed.
Produces a radical idle, indicating a performance-oriented engine setup.
Recommended for use with 4-speed transmissions or 3500+ stall converters and 10.5:1+ compression.

⚠️ 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

COMP Cams is well-known for performance engine components, and this FS 305H-10 Magnum/Drag Race camshaft is built for those looking to get more out of their Ford small block engine. This hydraulic flat tappet camshaft is designed for limited street use or bracket racing applications, meaning it’s best suited for vehicles that see occasional street driving or are primarily used for drag racing. It’s a solid choice for Ford 221, 255, 260, 289, and 302 cubic inch engines, found in a range of vehicles like the Ford Bronco, F-150, and Fairlane.

This camshaft features a 253-degree intake and 253-degree exhaust duration, and it works well with an 11:1 compression ratio, a 4000 RPM stall speed torque converter, and 4.10 or lower rear axle gears, assuming you have a good intake and exhaust system. It will produce a radical idle, letting everyone know your engine means business. For optimal performance, it’s recommended for use with a 4-speed transmission or a 3500+ stall converter and at least 10.5:1 compression.