What type of engine is this camshaft designed for?

This camshaft is designed for Small Block Chevrolet (SBC) engines from 1987 and newer that came factory-equipped with hydraulic roller camshafts. It is not compatible with LT-1 or LS1 engine variants.

What kind of power increase can I expect with this camshaft?

This camshaft is known for providing strong mid-range power. It's particularly well-suited for applications like jet boats where that extra boost in the middle of the RPM range is beneficial.

Does this camshaft come with all the necessary installation hardware?

No, this product is a camshaft only. You will need to ensure you have compatible lifters, pushrods, valve springs, and any other required valvetrain components for installation.

COMP Cams Hydraulic Roller Camshaft 08-418-8

Name: COMP Cams Camshaft CS XM 276HR-12
Brand: COMP Cams
Price: 610.12 USD
Availability: InStock

COMP Cams Camshaft CS XM 276HR-12

$610.12

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 Marine hydraulic roller camshaft for OE roller SBC engines. Known for strong mid-range power.

Key Features

Fits 1987+ GEN 1 Chevrolet 305-350 Small Blocks with factory roller camshafts (excluding LT-1/LS1).
Xtreme Marine hydraulic roller camshaft design.
Intake/exhaust duration at 0.050 inch lift is 224/230 degrees.
Provides strong mid-range power, ideal for jet boat applications with A or B impellers.
Requires a good exhaust system for optimal performance.
This is a camshaft-only purchase.

⚠️ 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 camshafts and valvetrain components. This Xtreme Marine hydraulic roller camshaft, part number 08-418-8, is designed to give your OE roller Small Block Chevrolet engine a strong mid-range power boost. It's a popular choice for applications like jet boats with A or B impellers, where that extra grunt in the middle of the RPM range makes a notable difference.

This camshaft features a 224/230 degree intake/exhaust duration at 0.050 inch lift and utilizes a hydraulic roller design. This setup is generally good for improving throttle response and overall power delivery, especially in the mid-range. For this camshaft to perform at its best, it's recommended to have a good exhaust system in place to help the engine breathe freely. This is a camshaft-only purchase, so you'll need to ensure you have all other necessary valvetrain components like lifters, pushrods, and valve springs that are compatible with this camshaft's specifications.

This camshaft fits a wide range of General Motors vehicles from 1987 and newer that use a factory roller camshaft in their Small Block Chevrolet engines, excluding LT-1 and LS1 variants. Examples include Chevrolet Camaros, Corvettes, and various C/K series trucks and SUVs. It's important to verify fitment for your specific vehicle to ensure compatibility.