CHE 4290 LS Trunnion Kit Motorsports Alloy

Description

Product Overview

The CHE 4290 LS Trunnion Kit with LS Bolts is engineered by Michigan Motorsports for demanding LS engine applications. Crafted from aerospace‑grade alloy, the trunnions provide exceptional rigidity and wear resistance, while the included LS rocker arm bolts deliver maximum clamping force. Designed for LS1, LS2, LS3, LS6, LQ4, LQ9 and similar engines, this kit ensures precise valve train geometry, reduced friction, and reliable performance at high RPMs.

Usage

Perfect for performance enthusiasts undertaking cam swaps, engine rebuilds, or high‑performance upgrades, the kit thrives in street, track, and racing environments. Install the trunnions and bolts during a full engine assembly or as a targeted upgrade to improve valve train stability for aggressive cam profiles.

Why Choose Us

Michigan Motorsports combines motorsport heritage with precision engineering. Each trunnion undergoes CNC machining and heat treatment to meet strict tolerances, guaranteeing a perfect fit and long‑term durability. Our LS rocker arm bolts are forged from high‑strength steel, offering superior torque retention compared to stock hardware. Backed by rigorous quality control, this kit provides the confidence needed for demanding builds.

Key Features

• Aircraft‑grade alloy trunnions for unmatched strength and wear resistance
• Precision‑engineered LS rocker arm bolts for optimal clamping force
• Full compatibility with major LS engine families including LS1‑LS3, LS6, LQ4, LQ9
• Reduces valve train friction, enhancing power delivery at high RPMs
• Machined finish ensures easy installation and reliable long‑term performance

FAQ

Will this kit fit a Gen V LT engine?

No, the CHE 4290 is not compatible with Gen V LT or LS7 applications.

Do I need additional hardware for installation?

The kit includes all required trunnions and LS rocker arm bolts; standard LS fasteners and tools are sufficient for installation.

Can this kit be used for a cam swap on an LS3?

Yes, it is ideal for LS3 cam swaps, providing the stability needed for higher lift and duration cams.

What is the warranty on this product?

Michigan Motorsports offers a limited one‑year warranty covering manufacturing defects.

Is any machining required on the engine block?

No additional machining is required; the trunnions are a direct bolt‑on replacement for stock components.