Chevrolet 19417356 CPP LSX 376-B15 Boost-Ready Long Block

Description

Extreme forced induction setups require the Chevrolet 19417356 CPP LSX 376-B15 and its robust 9.1:1 boost-ready compression ratio. Command massive tire-shredding torque during heavy drag strip passes. This build utilizes a rigid cast iron LSX block to handle 15 psi of boost safely.

Key Features of Chevrolet 19417356 CPP LSX 376-B15

• Cast Iron LSX Block (6-Bolt Mains): Delivers extreme structural rigidity to secure the rotating assembly during high-boost 1000 HP runs.
• LS3 Aluminum Heads (68cc Chambers): Features high-velocity rectangular ports with 2.16-inch intake valves to feed massive forced induction airflow smoothly.
• Forged Steel 4340 Crankshaft (3.622″ Stroke): Absorbs severe torsional stresses to eliminate crankshaft flexing under high supercharger or turbocharger loads.
• Forged Aluminum Pistons (9.1:1 Compression): Lowers the internal combustion pressure strategically to allow for aggressive aftermarket boost scaling.
• Boost-Calibrated Hydraulic Roller Camshaft (.560″/.555″ Lift): Reduces valvetrain friction while extending duration to 210/230 at .050 to maximize forced induction efficiency.
• Pre-Installed Valve Covers & Timing Cover: Seals the long block securely from the factory to eliminate tedious top-end assembly steps.

Component Breakdown: Base Long Block Configuration

This assembled base long block provides a formidable big-displacement LS foundation for high performance swaps.

• A precision machined cast iron block houses a robust hydraulic roller camshaft designed to deliver massive torque for drag and street performance.
• Lightweight aluminum cylinder heads improve overall thermal efficiency while strict block cleaning procedures ensure reliable head gasket sealing over the life of the engine.

Vehicle Fitment & Compatibility Matrix

Designed to drop seamlessly into spacious engine bays this 6.2L block aligns perfectly with standard LS motor mounts. Sourcing one of our heavy-duty LS long blocks modernizes your vehicle’s reliability instantly.

• Fits custom LS restomod swaps requiring a highly durable 376 CID boost-ready foundation.
• Fits classic Chevrolet Camaro and Chevelle pro-touring builds seeking massive forced induction power.
• Fits classic C10 pickup truck conversions looking for an aggressive iron-block LS upgrade.

Fuel & Ignition System Requirements

Feeding this high-horsepower LS engine demands proper fuel tuning and reliable high-voltage ignition components.

• An upgraded electronic fuel injection system or high flow intake is required to supply the heads while utilizing 91 Octane premium pump gas prevents pre-ignition under load.
• Upgraded aftermarket coil packs and heavy duty spark plug wires must be utilized to maintain a powerful spark across the RPM band.

Installation, Break-In Oil & Priming Instructions

Proper initial startup procedures ensure the longevity of the hydraulic roller lifters and internal bearings.

• Transfer your existing intake manifold and oil pan using fresh gaskets before manually priming the oil system with a dedicated LS priming tool.
• Fill the crankcase with a high zinc break in oil and perform a varied RPM heat cycle before driving conservatively for the first 500 miles.

USA Warranty, Emissions & Logistics

Investing in this Chevrolet Performance crate engine secures peace of mind through comprehensive manufacturer backing.

• Backed by a strict 24-Month / 24,000-Mile manufacturer warranty this engine provides excellent protection against internal manufacturing defects.
• This assembly is designated strictly for Race Use Only on non-pollution controlled motor vehicles and ships securely without a core exchange requirement.