What specific components are included in this COMP Cams K-Kit?

This K-Kit is comprehensive, including the camshaft, hydraulic roller lifters, valve springs, retainers, valve locks, and valve stem seals. It also comes with a timing chain set, assembly lube, and installation instructions to help with the process.

What kind of performance improvements can I expect from this camshaft kit?

This camshaft is designed for computer-controlled 305 or 350 engines to offer a good balance of improved fuel economy and noticeable power gains. It's a popular choice for enhancing the performance of these specific Small Block Chevrolet applications.

Will this camshaft kit fit my LT-1 or LS1 engine?

No, this camshaft kit is specifically designed for Gen 1 Small Block Chevrolet engines from 1987 and newer that originally used a factory roller camshaft. It is not compatible with LT-1 or LS1 engine variants.

COMP Cams Camshaft Kit CS XR258HR-12 K08-500-8

Name: COMP Cams Camshaft Kit CS XR258HR-12
Brand: COMP Cams
Price: 1351.10 USD
Availability: InStock

COMP Cams Camshaft Kit CS XR258HR-12

$1351.10

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 CS XR258HR-12 hydraulic roller camshaft kit for 87+ Chevy 305-350 small blocks. Improves economy and power.

Key Features

Fits 79+ vehicle make/model combinations with OE roller SBC engines.
Hydraulic roller camshaft with 206/212 degrees intake/exhaust duration.
Designed for computer-controlled 305 and 350 cubic inch engines.
Aims for improved fuel economy and power.
Kit includes camshaft, lifters, valve springs, retainers, locks, and seals.
Also includes a timing chain set, assembly lube, and instructions.

⚠️ 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

This COMP Cams hydraulic roller camshaft kit, specifically the CS XR258HR-12, features a 206/212 degree intake/exhaust duration split. This design is well-suited for computer-controlled 305 or 350 cubic inch Small Block Chevrolet engines, aiming for a balance of improved fuel economy and noticeable power gains. It's designed to work with factory roller camshaft setups on 1987 and newer Gen 1 Small Blocks, excluding LT-1 and LS1 variants.

This is a complete K-Kit, meaning it includes everything you need to get the camshaft installed and running. You'll find the camshaft itself, a set of hydraulic roller lifters, valve springs, retainers, valve locks, and valve stem seals. To ensure proper timing, a timing chain set is also included, along with assembly lube and installation instructions. This comprehensive package helps simplify the installation process by providing all the necessary components in one box.

This kit is a popular choice for owners of a wide range of vehicles from the late 80s and 90s, including models like the Chevrolet Camaro, Corvette, C1500, and Buick Roadmaster, when equipped with the specified Small Block Chevrolet engines. It's a solid option for those looking to enhance the performance and efficiency of their classic or older model vehicle.