GM LS Intake Manifold Dual Plane w/4150 Flange

The GM LS Intake Manifold Dual Plane w/4150 Flange provides a bridge between modern engine performance and traditional carbureted or throttle body injection setups. This manifold is engineered for those transitioning LS powerplants into platforms where a square bore mounting surface is required for fueling. By utilizing a dual plane design, it optimizes the power band for low-to-mid range torque, making it a versatile choice for heavy-duty vehicle builds or tactical utility applications. It serves as a critical component for maintaining reliable throttle response in demanding operational environments.

Constructed from high-strength aluminum with a natural finish, this Holley 300-130 intake uses a dual-plane runner configuration to separate intake pulses. The 4150 flange design ensures compatibility with a vast range of standard square bore carburetors and EFI throttle bodies. This specific geometry enhances air-fuel mixture velocity, ensuring consistent combustion across the entire RPM range. The cast aluminum construction provides a durable, heat-dissipating housing that stands up to the thermal stresses of prolonged engine operation.

This manifold is specifically designed for GM LS-Series engines, including the LS1, LS2, and LS6 variants, providing a seamless fit for cathedral port cylinder heads. Operators looking for a robust conversion kit will find the mounting height and port alignment optimized for standard engine bay configurations. The inclusion of the square bore flange allows for simplified tuning and maintenance in the field compared to complex factory fuel injection systems. This unit is an essential upgrade for those seeking a balance of modern LS efficiency and mechanical induction reliability.