Wiseco 6398LX7 Professional Series Forged Piston Chevy LS 4.070 in. Bore -3.2cc Flat Top

The Wiseco 6398LX7 is a Professional Series forged racing piston engineered for Chevrolet LS-based engines. Sold as a single piston, this shelf-stock unit features a 4.070-inch bore, a -3.2cc flat-top crown, and a 1.3045-inch compression height, making it an ideal choice for high-displacement LS builds requiring a proven, off-the-shelf forged piston solution.

Key Features:

• Professional Series forged construction — engineered and machined in the USA from 2618 high-strength aluminum alloy for superior tensile strength under heavy and severe duty race conditions
• 4.070 in. bore diameter with a -3.2cc flat-top crown design featuring two valve reliefs for optimal combustion chamber compatibility
• 1.3045 in. compression height for precise deck clearance tuning
• 0.927 in. wrist pin diameter for compatibility with performance connecting rod applications
• ArmorGlide® skirt coating provides seizure resistance, friction reduction, and quieter piston operation
• Fully machined crown features and precision ring grooves for consistent ring seal and long service life
• Designed for high-boost and nitrous applications while remaining suitable for street-driven builds
• Sold as a single piston (shelf stock) — ideal for replacement or custom odd-count builds

The Wiseco Professional Series represents a no-compromise approach to forged piston engineering, delivering custom-level performance and durability in a shelf-stock package. Built for serious racers and engine builders who demand the best in high-performance LS engine construction.