

Specifications
- Brand
- COMP Cams
- Part #
- 12-648-5
- UPC
- 036584015512

COMP Cams Camshaft CS 270Xos-8
$378.83
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COMP Cams CS 270Xos-8 solid flat camshaft for Chevrolet Small Blocks. Features 240/246 duration for improved performance.
Key Features
- Fits Chevrolet Gen 1 Small Blocks including 262, 265, 267, 283, 302, 305, 307, 327, 350, and 400 cubic inch engines.
- Solid flat tappet design with 240 degrees intake and 246 degrees exhaust duration at .050 lift.
- Features a fast track lobe design for quicker valve opening and improved throttle response.
- Designed for 327-358 cubic inch engines with approximately 9:1 compression and 2-barrel induction.
- Manufacturer part number 12-648-5.
- Not CARB approved and cannot be shipped to California.
⚠️ 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
Starting with a 240-degree intake and 246-degree exhaust duration at .050 lift, this COMP Cams CS 270Xos-8 solid flat tappet camshaft is built for Chevrolet Small Block engines. It’s designed for 327-358 cubic inch displacement with around 9:1 compression, typically paired with a 2-barrel carburetor and iron intake and exhaust manifolds. This camshaft is a popular choice for oval track racing and performance street applications where a solid lifter setup is desired.
This camshaft utilizes a fast track lobe design, meaning the lobes open the valves more quickly than stock cams. This can lead to improved throttle response and a more aggressive power band, especially in the mid-to-upper RPM range. The solid lifter design requires more precise valve adjustment but offers a more direct feel and can handle higher lift profiles. It's well-built for demanding use, making it a solid option for builders looking to extract more power from their Gen 1 Small Block Chevy.
It's important to note that this camshaft fits a wide range of Chevrolet Gen 1 Small Blocks, including popular displacements like the 350 and 400 cubic inch engines. However, it does not fit LT1/LT4 or factory roller small blocks from 1985 and newer, nor does it fit any LS-based engines. Early 1955-1957 265ci engines also require a specific oiling groove on the rear journal that this particular camshaft does not feature. Always confirm your engine's configuration before ordering.
Specifications
- Brand
- COMP Cams
- Manufacturer Part #
- 12-648-5
- UPC
- 036584015512
Frequently Asked Questions
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