What is the primary benefit of a hydraulic roller camshaft like the XR281HR-12?

Hydraulic roller camshafts use roller lifters, which significantly reduce friction compared to traditional flat tappet designs. This allows for more aggressive camshaft lobe profiles, leading to improved performance and power gains, especially at higher engine speeds.

What other parts are typically needed when installing this camshaft?

Installing a performance camshaft often requires supporting modifications. It's highly recommended to use upgraded valve springs that match the camshaft's lift specifications, and you may also need new pushrods to ensure proper geometry and valve train function.

Does this camshaft come with an engine tune?

No, this camshaft requires a separate engine programmer for tuning. You will need to adjust the vehicle's computer to account for the new camshaft specifications to ensure optimal performance and drivability.

COMP Cams LS1 XR281HR-12 Hydraulic Roller Camshaft 54-428-11

Name: COMP Cams Camshaft LS1 XR281HR-12
Brand: COMP Cams
Price: 629.16 USD
Availability: InStock

COMP Cams Camshaft LS1 XR281HR-12

$629.16

On Backorder

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

Fits many GM LS engines. This hydraulic roller camshaft offers improved performance for street/strip use.

Key Features

Fits many GM LS Gen III/IV engines including 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, and 7.0L displacements.
Features a 228/230 degree intake/exhaust duration at .050 lift for improved high-RPM performance.
Hydraulic roller design reduces friction and allows for more aggressive lobe profiles.
Designed for street/strip applications and compatible with FAST LSX intake manifolds.
Requires an engine programmer for proper tuning after installation.
COMP Cams part number 54-428-11.

⚠️ 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 XR281HR-12 camshaft features a 228/230 degree intake/exhaust duration at .050 lift, a common specification for a high-RPM street and strip camshaft designed for GM LS Gen III and IV engines. It's built as a hydraulic roller camshaft, which means it uses roller lifters to reduce friction compared to flat tappet designs, allowing for more aggressive lobe profiles and better performance. This particular grind is well-suited for use with a FAST LSX intake manifold and will require an engine programmer to adjust for the new camshaft specifications.

The XR281HR-12 is a popular choice for LS engine builds aiming for a noticeable increase in power, especially at higher RPMs. It's designed to work with a variety of LS displacements, including 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, and even 7.0L engines found in models like the Chevrolet Corvette, Camaro, Silverado trucks, and Cadillac Escalade. Because it's a hydraulic roller camshaft, it's a direct replacement for factory roller setups and offers a significant upgrade over older flat tappet designs. Remember that installing a camshaft of this nature often involves other supporting modifications, such as upgraded valve springs and potentially pushrods, to ensure optimal performance and reliability.

When installing this camshaft, it's essential to follow the manufacturer's detailed instructions, especially regarding break-in procedures. This camshaft is not CARB approved and cannot be shipped to California. You will also need an engine programmer to properly tune the vehicle's computer for the new camshaft profile, ensuring the engine runs smoothly and efficiently.