What kind of cylinder heads is this camshaft best suited for?

This camshaft is specifically designed to work with rectangular port cylinder heads that have been CNC-ported. These heads offer improved airflow, which is essential for the high-RPM performance this camshaft is built for.

What other components might I need when installing this camshaft?

When installing a performance camshaft, it's recommended to check the manufacturer's instructions for a complete list of compatible parts. You may need upgraded valve springs, pushrods, and a timing set to properly support the camshaft's specifications and ensure optimal performance and reliability.

Is this camshaft street legal in all states?

No, this camshaft is not CARB approved and cannot be shipped to California due to emissions regulations. Always check your local regulations regarding emissions compliance for engine modifications.

COMP Cams LS1 Camshaft 54-474-11 HR-115 - GM LS Engines

Name: COMP Cams Camshaft LS1 301Lrr HR-115
Brand: COMP Cams
Price: 645.29 USD
Availability: InStock

COMP Cams Camshaft LS1 301Lrr HR-115

$645.29

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 LS1 hydraulic roller camshaft for GM LS Gen III/IV engines. Designed for 420+ c.i. high RPM race applications.

Key Features

Fits 1999-2019+ GM LS Gen III/IV engines, including 4.8L through 7.0L displacements.
Hydraulic roller design for improved performance and durability.
Intake duration of 251 degrees and exhaust duration of 267 degrees at .050 inch lift.
Intake lift of .617 inches and exhaust lift of .624 inches.
Optimized for 420+ cubic inch engines with high compression and rectangular port CNC-ported heads.
Designed for high RPM operation in race 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 building a high-performance LS engine for serious track use or racing, this COMP Cams camshaft is designed to help you get the most out of your setup. This hydraulic roller camshaft is specifically tuned for larger displacement LS engines, typically 420 cubic inches and up, especially those equipped with high-compression pistons and rectangular port cylinder heads that have been CNC-ported for optimal airflow. It's built for high RPM operation, making it a solid choice for race-oriented builds where maximizing power at higher engine speeds is critical.

The HR-115 camshaft features a 251-degree intake duration and 267-degree exhaust duration at .050 inch lift, with a .617 inch intake lift and .624 inch exhaust lift. These specifications are carefully chosen to work well with rectangular port heads, helping to improve airflow and power output across the RPM range, particularly in the upper half. COMP Cams is well-known for their camshafts, and this one is made to handle the demands of competitive driving. It's important to note that this camshaft is not CARB approved and cannot be shipped to California.

This camshaft fits a wide range of GM LS engines, including those found in vehicles like the Chevrolet Silverado, Cadillac Escalade, and Chevrolet Corvette, among many others. When installing a camshaft like this, it's always a good idea to consult the manufacturer's installation instructions to ensure proper setup and to verify any other components you might need, such as valve springs, pushrods, or timing sets, to match the camshaft's performance profile.