Granatelli Motor Sports Black Billet LS Intake Manifold – 120MM

120mm High-Performance Intake System

The Granatelli Motor Sports ZILLA 120mm intake manifold is built for serious LS performance applications where airflow, strength, and fuel delivery flexibility matter. Precision-machined from billet aluminum, this manifold is engineered to support high-output street cars, boosted builds, and full race combinations that demand consistent performance under extreme conditions.

Designed with a massive 120mm inlet, the ZILLA provides the airflow capacity needed for naturally aspirated, turbocharged, and supercharged LS combinations. Its optimized plenum and runner design help improve air distribution, cylinder filling, throttle response, and mid-to-high RPM power delivery.

For high-horsepower applications, this manifold is designed to support a dual-injector setup, giving serious builders the ability to run additional fuel delivery when the combination demands it. At the same time, the ZILLA is not limited to race-only setups. For street applications or builds that only require a standard eight-injector configuration, included injector block-offs allow the manifold to be used with a single set of injectors.

The ZILLA manifold also includes an explosion tank as an added safety precaution for aggressive high-horsepower combinations. In extreme boosted or race applications, sudden pressure spikes, intake backfires, or violent combustion events can create dangerous force inside the intake system. The explosion tank is designed to provide an added layer of protection by helping manage these sudden pressure events, reducing stress on the manifold and surrounding components. For serious LS builds pushing big boost, high RPM, and heavy cylinder pressure, this is the kind of safety-focused detail that separates a purpose-built performance manifold from a basic street intake.

Finished in a durable black anodized coating, the ZILLA delivers a clean, aggressive look while offering long-lasting corrosion resistance. Each manifold is supplied with the necessary components to support installation and setup, including gaskets, injector block-offs, and components required for the explosion tank assembly.

Key Features

• Solid billet aluminum construction for maximum strength and thermal stability
• Large 120mm inlet designed for serious airflow capacity
• Supports dual-injector setups for high-horsepower LS applications
• Includes injector block-offs for customers running a standard eight-injector setup
• Includes explosion tank as an added safety precaution for high-horsepower and boosted builds
• Suitable for both high-performance street builds and race applications
• High-efficiency plenum and runner design for improved power delivery
• Engineered for naturally aspirated, turbocharged, and supercharged combinations
• Black anodized finish for durability and a clean, stealth appearance
• Supplied with necessary components, including gaskets, injector block-offs, and explosion tank components
• Precision-machined for consistent fitment and professional installation

Fitment

Compatible with LS-based platforms including LS3, L92, L99, L76, L77, LY6, and L94.