What is the primary benefit of this camshaft for my GM LS engine?

This COMP Cams XFI RPM HI-LIFT camshaft is designed to deliver outstanding top-end power in modified non-AFM GM LS Gen IV VVT engines. It achieves this without significantly sacrificing low-end torque, especially when paired with proper ECU tuning.

Does this camshaft come with all the necessary components for installation?

This product is for the camshaft itself. It is recommended to consult the manufacturer's installation guide or a professional mechanic to determine if additional components like valve springs, pushrods, or lifters are required for your specific application and to ensure proper installation.

What kind of tuning is required for this camshaft?

To achieve optimal performance and ensure engine longevity, this camshaft requires a custom ECU tune. The tuning process will calibrate fuel delivery, ignition timing, and VVT parameters to match the camshaft's specifications and your vehicle's modifications.

COMP Cams GM LS VVT Camshaft 189-403-13

Name: COMP Cams Camshaft GM LS 358 Vvt 275Pii
Brand: COMP Cams
SKU: comp-cams-comp-cams-camshaft-gm-ls-358-vvt-275pii-t14-4390900
Price: 536.44 USD
Availability: BackOrder

COMP Cams Camshaft GM LS 358 Vvt 275Pii

$536.44

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 XFI RPM HI-LIFT camshaft for GM LS Gen IV VVT engines. Delivers outstanding top-end power in modified non-AFM applications.

Key Features

Fits a wide range of GM LS Gen IV VVT engines from 2008-2019.
Features 222-degree intake and 236-degree exhaust duration at .050 lift.
Offers .553-inch intake and .553-inch exhaust lift.
Designed for modified non-AFM applications to maximize top-end power.
Hydraulic roller design for improved efficiency and reduced friction.
Optimized lobe separation angle and lift profile for VVT systems.

⚠️ 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 XFI RPM HI-LIFT camshaft, part number 189-403-13, is built with a 222-degree intake and 236-degree exhaust duration at .050 lift, featuring a .553-inch intake and .553-inch exhaust lift. It's specifically designed for GM LS Gen IV engines equipped with Variable Valve Timing (VVT) and is intended for modified applications that do not use Active Fuel Management (AFM). This camshaft is engineered to provide a significant boost in top-end power without overly sacrificing low-end torque, especially when the engine's computer is properly tuned to take advantage of its capabilities.

The XFI RPM HI-LIFT camshaft utilizes a hydraulic roller design, which is a popular choice for performance builds due to its efficiency and reduced friction compared to flat tappet designs. Its specific lobe separation angle and lift profile are optimized to work with the VVT system, allowing for dynamic adjustments to valve timing based on engine load and RPM. This means you get a broader power band, with strong performance when you need it for spirited driving or hauling, and more manageable characteristics during cruising.

This camshaft is a solid option for owners of a wide range of GM vehicles, including popular models like the Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Tahoe, and GMC Yukon, spanning various model years from 2008 through 2019 depending on the specific engine and chassis. It's also compatible with performance icons like the Chevrolet Camaro. While it offers substantial power gains, remember that modifications like this often require supporting upgrades and a professional tune to achieve optimal results and ensure engine longevity. Please note this part is not CARB approved and cannot be shipped to California.