The GM LS3 engine is a 6.2-liter small-block V8 that became iconic for its blend of reliability, power, and modern efficiency. Factory-rated around 430 horsepower and 424 lb-ft of torque in many applications, it delivers strong performance while remaining street-friendly. Featuring an aluminum block and heads, the LS3 uses a single cam-in-block layout with hydraulic roller lifters, maintaining the classic pushrod simplicity that GM small-blocks are known for. High-flow rectangular-port heads, a 10.7:1 compression ratio, and a revised intake manifold help the LS3 breathe efficiently and rev eagerly.
0