

Specifications
- Brand
- COMP Cams
- Part #
- 12-243-3
- UPC
- 036584038214

COMP Cams Camshaft CS X4 270H-11
$286.94
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COMP Cams CS X4 270H-11 hydraulic flat tappet camshaft for Chevy Small Block Gen 1 engines. Boosts mid-range power and throttle response.
Key Features
- Fits many Chevrolet Gen 1 Small Block engines including 262 through 400 cubic inch displacements.
- Features a 226 degree intake and 234 degree exhaust duration for improved mid-range power.
- Hydraulic flat tappet design simplifies installation and maintenance.
- Designed to work well with headers, aftermarket gears, and a 2200+ RPM stall torque converter.
- Provides strong mid-range torque and improved throttle response.
- COMP Cams part number 12-243-3.
⚠️ 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
Product Details
This COMP Cams CS X4 270H-11 camshaft features a 226/234 degree intake/exhaust duration split, a common choice for improving mid-range torque and throttle response in Chevrolet Gen 1 Small Block engines. It's a hydraulic flat tappet design, meaning it uses lifters that don't require adjustment once installed, making it a popular option for builds where simplicity and performance are key.
Designed for a strong mid-range pull, this cam works well with headers, a gear change, and a torque converter with a stall speed of 2200 RPM or higher. This setup is ideal for vehicles like the Chevrolet Camaro, C10, and Caprice, where you want that extra kick when you get into the throttle. It's a well-built component that can make a noticeable difference in how your engine performs, especially when paired with other supporting modifications.
It's important to confirm your specific engine uses a flat tappet setup, as many later model Small Blocks (1985 and newer) transitioned to factory roller camshafts. This camshaft is intended for those engines that still utilize the traditional flat tappet system, offering a solid performance upgrade for a wide range of classic Chevy applications.
Specifications
- Brand
- COMP Cams
- Manufacturer Part #
- 12-243-3
- UPC
- 036584038214
Frequently Asked Questions
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