EVIL ENERGY LS Steam Port Kit – Stainless Steel Crossover with Leak-Proof Seals (6.0/5.3 LS)

Overview

EVIL ENERGY presents the LS Steam Port Kit, a stainless steel coolant crossover designed to fit a wide range of LS engines, including LS1, LS2, LS3, LS6, LS7, and LSX. By linking the front and rear steam ports, the kit helps release trapped steam and supports smoother coolant circulation. The result is potential improvements in cooling efficiency during spirited driving, drag sessions, or challenging off-road conditions.

Why this kit matters

Engine bays get hot, and a well-sealed crossover can help maintain steady coolant flow under demanding use. This kit combines rugged materials with a thoughtful layout to simplify maintenance and long-term reliability. The combination of a black anodized CNC-machined aluminum manifold and 304 stainless steel lines balances durability with a clean, race-ready look that can withstand high temperatures and aggressive driving styles.

• Compatibility highlights: fits LS1/LS2/LS3/LS6/LS7/LSX engines and supports SR1/SR3 Titan remote MAP sensor setups (remote MAP sensor required). It works with popular Gen 3 truck intakes from Holley and similar brands; Gen4 truck intakes are not supported.
• Complete installation kit: includes AN fittings, PTFE tape, O-rings, shims, and clearly labeled driver/passenger tubes to streamline setup and ensure secure seals.

In real-world terms, the system is designed for high-horsepower NA builds, drag/drift setups, and rugged off-road use where heat, vibration, and harsh temps are common. While results can vary, the kit's design aims to support a cooler and more predictable operating window when conditions push the engine.

• Durable construction: 304 stainless steel lines resist coolant exposure and heat, paired with a black anodized aluminum manifold for a robust install.
• Easy maintenance: O-rings, shims, and pre-labeled tubes help keep installation tidy and service intervals straightforward.

Rear port note: LS3/L92 heads ship with factory aluminum plugs that can be removed from below. Do not enlarge the opening and ensure metal fragments do not enter internal passages during work. Follow the included guidance to avoid debris in the system.