Mahle Piston Set Chevy 400ci 4.165in Bore 3.750in Stroke 6.0in Rod 12.3:1 CR Piston Set of 8

If you're building a high-performance Chevy 400ci (or 379ci) engine, Mahle's forged piston set is a solid choice for serious power. These pistons are designed for a 4.165-inch bore and feature a 12.3:1 compression ratio, making them suitable for aggressive street or race applications where maximum output is the goal. Mahle is a well-known name in engine components, and this set is built to handle the demands of a performance engine.

This set includes eight pistons, each crafted from 2618 aluminum, a strong material commonly used in high-performance pistons for its durability and ability to withstand high temperatures and pressures. The pistons have a 4.0cc valve relief volume, which is important for proper valve-to-piston clearance with performance camshafts. They are designed to work with a 3.750-inch stroke crankshaft and a 6.0-inch connecting rod, with a compression height of 1.125 inches. The 0.927-inch wrist pins are also included, ensuring you have the core components needed for your engine build. Each piston weighs approximately 493 grams, which is typical for forged pistons of this size and application.

Keep in mind that these pistons are not CARB approved and cannot be shipped to California. They are also subject to California's Prop 65 warning. For a successful installation, always refer to the manufacturer's detailed specifications and recommended assembly procedures to ensure proper fitment and performance in your specific engine build.