Wiseco 6481B6 Chevy Big Block Quick 16 Forged Piston 4.560 Bore +45cc Dome

The Wiseco 6481B6 is a Professional Series forged shelf-stock piston engineered for Chevrolet Big Block engines running high-compression Quick 16 builds. Featuring a +45cc semi-hollow dome, this piston is purpose-built for serious racers and engine builders demanding maximum power from severe-duty race applications.

Forged and machined in the USA from 2618 high-strength aluminum alloy, the 6481B6 delivers superior tensile strength, improved heat transfer, and long-term durability under extreme cylinder pressures. The semi-hollow dome design reduces reciprocating mass while maintaining the high compression ratios required for Quick 16 Series builds with conventional 24° heads.

Key Specifications:

• Bore Diameter: 4.560 in.
• Compression Height: 1.270 in.
• Pin Diameter: 0.990 in.
• Dome Volume: +45cc Semi-Hollow
• Ring Grooves: .043 / 1/16 / 3/16 (rings sold separately)
• Pin Included: S726 (.990 x 2.930)
• Deck Height Compatibility: 9.800 / 10.200 in. (standard)
• Stroke Compatibility: 4.250 in.
• Rod Length Compatibility: 6.385 / 6.800 in.
• Series: Quick 16 / Professional Series
• Material: 2618 Aluminum Alloy
• Sold As: Individual/Replacement Piston (shelf stock)

Key Features:

• ArmorGlide® Skirt Coating — reduces friction, resists seizure, and quiets operation
• Vertical Gas Ports for improved ring seal and combustion efficiency
• Anti-detonation groove and additional pressure seal features for reliability under boost and high RPM
• Forced pin oiling for enhanced pin and bore longevity
• Strutted skirt design for added structural rigidity
• Fits 9.750 / 9.800 deck height BBC applications

The 6481B6 is a shelf-stock single replacement piston ideal for rebuilding or replacing a damaged piston in an existing Quick 16 BBC build. Compatible ringset: W860L8-4560-5 (sold separately). Engineered, forged, and machined entirely in the USA at Wiseco's Mentor, Ohio facility.