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Wiseco 6481B125 Big Block Chevy Shelf Stock Piston 4.125 Bore +45cc Dome

(Chevrolet Corvette 1970-74, Impala 1970-76, Malibu 1973-75, C1500 1990-93, Chevelle 1971-73, Blazer 1973, C10 Pickup 1973-74, Caprice 1970-76 + 48 more models)

Manufacturer

Picture for manufacturer Wiseco Pistons

Part Number

6481B125
6 reviews
Sale Price

$172.99

Estimated ship date Thursday, November 19

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Product Details

The Wiseco 6481B125 is a shelf-stock forged piston designed for Big Block Chevy (BBC) engines. Part of Wiseco's Quick delivery shelf-stock program, this piston is available for immediate shipment without the lead time of a custom order, making it ideal for builders who need a high-quality forged piston fast.

This piston features a +45cc domed crown, which raises compression ratio significantly — making it well-suited for high-performance naturally aspirated builds where maximum cylinder pressure is desired. The 4.125-inch bore diameter accommodates standard or lightly over-bored BBC cylinder blocks.

Key Features:

  • Application: Big Block Chevy (BBC) engines
  • Bore Diameter: 4.125 inches
  • Crown Style: +45cc dome for elevated compression ratio
  • Program: Shelf Stock / Quick delivery — no custom lead time
  • Construction: Forged aluminum for superior strength and heat resistance over cast pistons
  • Sold: Individually (single piston)

Wiseco forged pistons are manufactured using precision forging and CNC machining processes, delivering tighter tolerances and greater durability than cast alternatives. The forged construction reduces weight while increasing tensile strength, resulting in improved throttle response and long-term reliability under high-performance and racing conditions.

Products specifications

Fits

Chevrolet Corvette 1970-74, Impala 1970-76, Malibu 1973-75, C1500 1990-93, Chevelle 1971-73, Blazer 1973, C10 Pickup 1973-74, Caprice 1970-76, C10 1975-80, El Camino 1970-75, K2500 1991-2000, Express 3500 1996-2000, C3500 1988-2000 + 43 more models

Bore

4.625

Comp Height

1.27

Comp Ratio @ 107cc

15.9:1

Comp Ratio @ 114CC

14.7:1

Comp Ratio @ 119CC

14:1

Comp Ratio @ 123CC

13.4:1

Dome Volume

45 Hollow

Gram Weight

685

Rod

6.385 / 6.800

Stroke

4.25

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