What is the difference between this camshaft and a roller camshaft?

This is a hydraulic flat tappet camshaft, meaning it uses a flat lifter that slides directly on the camshaft lobe. Factory roller camshafts use roller lifters that roll on the lobe, reducing friction. This camshaft is designed for engines originally equipped with flat tappet setups.

How can I tell if my Chevy Small Block has a flat tappet or roller camshaft?

The most reliable way to determine if your engine has a flat tappet or factory roller camshaft is to remove the intake manifold or timing cover. This will allow you to visually inspect the lifters and camshaft lobes.

Does this camshaft come with lifters?

This camshaft is sold individually and does not include lifters. If your engine requires new lifters, they must be purchased separately. Ensure you select the correct type of lifters for a flat tappet camshaft.

COMP Cams Hydraulic Flat Tappet Camshaft 12-239-3

Name: COMP Cams Camshaft CS X4 262H-11
Brand: COMP Cams
Price: 286.94 USD
Availability: InStock

COMP Cams Camshaft CS X4 262H-11

$286.94

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 Xtreme 4x4 camshaft for Chevy Small Block Gen 1 engines. Hydraulic flat tappet design with improved throttle response.

Key Features

Fits Chevrolet Gen 1 Small Block engines including 262, 265, 267, 283, 302, 305, 307, 327, 350, and 400 cubic inch displacements.
Hydraulic flat tappet design provides a noticeable idle and improved mid-range performance.
Intake duration is 218 degrees and exhaust duration is 226 degrees at 0.050 inch lift.
Features a 110-degree lobe separation angle.
Does not fit LT1/LT4, LS-based engines, or factory roller Small Blocks from 1985 and newer.
Manufacturer part number 12-239-3.

⚠️ 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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Product Details

This COMP Cams Xtreme 4x4 camshaft features a hydraulic flat tappet design, with intake and exhaust durations of 218 and 226 degrees respectively. This specific grind is intended for Chevrolet Gen 1 Small Block engines, offering a noticeable idle and improved throttle response, particularly in the mid-range. It's a well-built option for those looking to enhance the performance of their classic Chevy V8.

The CS X4 262H-11 camshaft is designed to work with a variety of Chevrolet Small Block displacements, from the 262 up to the 400 cubic inch engines. It's important to verify your engine's configuration, as this camshaft is for flat tappet applications and does not fit factory roller camshaft setups found in many 1985 and newer GM vehicles, nor does it fit the LS-based engines. Removing the intake manifold or timing cover is the surest way to confirm your block's original camshaft type.

For early 1955-1957 Chevrolet 265 engines, a specific oiling groove on the fifth cam journal is required. If you're unsure about your engine's specific requirements or if it's a flat tappet block, it's always best to consult the manufacturer's detailed fitment guide or a trusted mechanic before installation.