Wiseco 6473MR96 Forged Piston SBC LS1 Vortec 5.3L 96mm Bore -7cc 10.25:1

The Wiseco 6473MR96 is a shelf-stock forged replacement piston engineered for the Chevrolet Small Block LS1 / Vortec 5.3L engine family. Featuring a 96mm (3.780 in.) bore and a -7cc reverse dome (22RD) crown, this piston delivers a 10.25:1 compression ratio — ideal for naturally aspirated performance builds demanding durability and precision.

Key Features:

• Forged 2618 aluminum alloy construction for superior tensile strength and fatigue resistance under high-stress conditions
• 96mm (3.780 in.) bore diameter with precision-machined ring grooves for consistent ring seal
• -7cc reverse dome (22RD) crown yielding a 10.25:1 compression ratio
• 1.1105 in. compression height for proper deck clearance with stock and performance connecting rods
• 0.927 in. pin diameter compatible with standard LS-series wrist pins
• ArmorGlide skirt coating reduces friction, resists scuffing, and quiets piston-to-wall contact
• Shelf-stock single piston — available individually for precise replacement or custom builds
• Engineered, forged, and machined in the USA at Wiseco's Mentor, Ohio facility

Wiseco Professional Series pistons are designed for heavy to severe-duty race and performance builds. Rings and wrist pins are sold separately — consult Wiseco's ring and pin cross-reference for compatible components.