The Bullet Piston LS1/LS2/LS3 4.065/4 Inch Stroke Dish -27.4 is a performance piston designed for GM's LS1 (5.7L), LS2 (6.0L), and LS3 (6.2L) V8 engines. It features a 4.065-inch bore size and is designed for engines with a 4-inch stroke, making it a versatile option for a wide range of LS engine builds. The dish-shaped top with a -27.4 cc dish volume lowers the compression ratio, which is especially useful for applications involving forced induction (turbochargers or superchargers) or nitrous oxide systems, where reduced compression helps prevent detonation. This piston design optimizes combustion dynamics and allows for better air/fuel mixture flow, improving engine performance and power.

Features 

Brand: Bullet Piston

Compatibility: LS1 (5.7L), LS2 (6.0L), and LS3 (6.2L) engines

Bore Size: 4.065 inches

Stroke: 4 inches

Piston Top Design: Dish-shaped

Dish Volume: -27.4 cc (lowers compression ratio)

Application: Performance, forced induction, racing, and high-compression engine builds