What is required to install this camshaft and lifter kit?

This kit requires a Chevrolet Gen 1 Small Block engine that is set up for a flat tappet camshaft. You will also need to pair it with headers, a gear ratio between 3.73 and 4.10, and a torque converter with at least a 2500 RPM stall speed for optimal performance. Ensure your block is compatible with roller lifters and a roller timing set.

How can I tell if my engine is a factory roller or flat tappet?

To confirm, you will need to remove the intake manifold or the timing cover. Many Chevrolet small blocks from 1985 and newer gradually incorporated roller camshafts. While earlier performance models like Corvettes and Camaros received them sooner, many trucks and SUVs continued with flat tappet cams into the mid-1990s.

What kind of idle can I expect with this camshaft?

This XR280HR-1 camshaft is designed for significant performance gains, particularly in the mid-range. As a result, you can expect a rougher idle compared to a stock camshaft. This is a common characteristic of performance grinds that prioritize power output.

COMP Cams Hydraulic Roller Cam and Lifter Kit CL12-414-8

Name: COMP Cams Cam & Lifter Kit CS XR280HR-1
Brand: COMP Cams
Price: 1215.83 USD
Availability: InStock

COMP Cams Cam & Lifter Kit CS XR280HR-1

$1215.83

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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 XR280HR-1 hydraulic roller cam and lifter kit for Chevrolet Small Block Gen 1. Boosts mid-range power.

Key Features

Fits Chevrolet Gen 1 Small Blocks from 262 to 400 cubic inches.
Includes camshaft, hydraulic roller lifters, assembly lube, and decals.
XR280HR-1 camshaft offers 230° intake and 234° exhaust duration at .050" lift.
Features .550" lift on both intake and exhaust.
Designed for strong mid-range power.
Requires headers, 3.73-4.10 gears, and a 2500+ RPM stall torque converter for optimal performance.

⚠️ 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 making performance camshafts and valvetrain components that help engines breathe better and make more power. This CL12-414-8 kit is built around their XR280HR-1 camshaft, a hydraulic roller grind designed to give your Chevrolet small block engine a strong boost in mid-range power. It's a popular choice for builds aiming for improved acceleration and pulling power, especially in vehicles that see a lot of street use or are set up for towing. This kit is designed for Chevrolet Gen 1 Small Blocks, covering a wide range of displacements from 262 up to 400 cubic inches, and fits many vehicles like the Chevrolet C10, Camaro, and Caprice, among others.

This kit includes the camshaft itself, a set of hydraulic roller lifters, assembly lube to get everything started right, and decals. The XR280HR-1 camshaft has a 230-degree intake and 234-degree exhaust duration at .050 inch lift, with .550 inch lift on both intake and exhaust. Because it's a roller camshaft, it requires a block that can accept roller lifters and a roller-compatible timing set. For this cam to really shine, you'll want to pair it with headers, a gear ratio in the 3.73 to 4.10 range, and a torque converter with at least a 2500 RPM stall speed. Expect a rougher idle than stock, which is typical for cams with this much performance focus.

It's important to confirm your specific engine is set up for a flat tappet camshaft, as many later model small blocks (1985 and newer) came from the factory with roller camshafts, and this kit is not compatible with those. Also, note that this kit is not CARB approved and cannot be shipped to California. If you're rebuilding a classic Chevy small block and want to unlock more mid-range grunt, this COMP Cams kit is a solid option.