The LS376 EFI 525HP Crate Engine is a high-performance Chevrolet LS-Series V8 designed for maximum power, reliability, and everyday drivability. Delivering 525 horsepower, it features electronic fuel injection (EFI), a lightweight aluminum block, high-flow intake manifold, and premium ignition system for outstanding throttle response and efficiency. Complete with a serpentine accessory drive and performance components, this crate engine is an excellent choice for muscle cars, hot rods, restomods, street machines, and custom engine swaps, providing modern performance with proven LS durability.

Engine Type: LS-Series Gen-IV Small-Block V-8 Displacement (cu. in.): 376 (6.2L) Bore x Stroke (in.): 4.065 x 3.622 (103.25 x 92 mm) Block (P/N 12623967): Cast-aluminum with six-bolt, cross-bolted main caps Crankshaft (P/N 12597569): Nodular iron Connecting Rods (P/N 12607475): Powdered metal Pistons (P/N 19207287): Hypereutectic aluminum Camshaft Type (P/N 12603844): Hydraulic roller Valve Lift (in.): .551 intake / .522 exhaust Camshaft Duration (@.050 in.): 204° intake / 211° exhaust Cylinder Heads (P/N 12629063): Aluminum L92-style port; “as cast” with 68-cc chambers Valve Size (in.): 2.165 intake / 1.590 exhaust Compression Ratio: 10.7:1 Rocker Arms (P/N 12569167 int): Investment-cast, roller trunnion Rocker Arms (P/N 10214664 exh): Investment-cast, roller trunnion Rocker Arm Ratio: 1.7:1 Recommended Fuel: 92 octane Maximum Recommended rpm: 6600 Reluctor Wheel: 58X Balanced: Internal