LSX376-B15 Crate Engine

The Chevrolet Performance LSX376-B15 Crate Engine is engineered for builders seeking to maximize the performance of turbocharged or supercharged setups. It provides a robust foundation with an all-forged rotating assembly designed to withstand up to 15 pounds of boost. At its core, this engine features Chevrolet Performance's durable LS steel Bowtie standard-deck block. This is paired with a forged-steel crankshaft, forged connecting rods, and forged aluminum pistons for enhanced strength and reliability under demanding conditions. The engine is completed with high-flow, rectangular-port LSX-LS3 six-bolt aluminum cylinder heads, specifically chosen for their ability to support boosted applications. Delivered as a long block, the LSX376-B15 omits the intake manifold and other accessories, offering significant flexibility. This allows enthusiasts to precisely tailor the induction system and other components to their specific forced-induction configuration. It is an ideal solution for replacing a late-model performance engine or for constructing a powerful, high-boost powerplant for classic Pro Touring vehicles. Key technical specifications include an output of 476 horsepower at 6000 RPM and 444 lb-ft of torque. The engine displaces 376 cubic inches (6.2L) with a bore of 4.065 inches and a stroke of 3.622 inches. It features a hydraulic roller camshaft, a 9:1 compression ratio, and is designed to run on 87 octane fuel with a maximum recommended RPM of 6600. The engine is internally balanced and weighs approximately 500 lbs. It is Made in the USA and recommended for street and off-road vehicles, specifically noting it is not intended for marine applications.