Sportsman Racing Products 139482 BBC Flat-Top Forged Piston Set, 4.500-Inch Bore, -3 cc, Set of 8

The Sportsman Racing Products 139482 piston set is engineered for Big Block Chevy applications requiring durable forged construction and a flat-top design. Each piston is matched to a 4.500-inch bore and a 1.645-inch compression height, providing a reliable foundation for performance-oriented engine builds. The flat-top crown has a -3 cc volume specification to support precise compression-ratio planning when paired with the appropriate cylinder head, gasket, and rotating assembly components.
The 139482 set includes eight pistons with ring grooves sized for 1/16-inch, 1/16-inch, and 3/16-inch rings. This configuration helps accommodate common performance ring packages while maintaining compatibility with properly matched engine components. Forged construction offers the strength and durability needed for demanding street, racing, and high-performance applications when installation and clearances are correctly verified by the builder.
Designed for Big Block Chevy engines, these Sportsman Racing Products pistons are intended for builders who need a consistent piston set for a large-bore combination. Always confirm bore size, compression height, deck clearance, valve relief requirements, wrist-pin specifications, ring selection, and piston-to-wall clearance before assembly. Professional machining and final measurements are recommended to ensure proper fit and dependable engine operation.

Features:

• Brand: Sportsman Racing Products

• Part Number: 139482

• Application: Big Block Chevy

• Construction: Forged aluminum

• Crown Style: Flat top

• Bore: 4.500 inches

• Compression Height: 1.645 inches

• Crown Volume: -3 cc

• Ring Grooves: 1/16-inch, 1/16-inch, and 3/16-inch

• Quantity: Set of 8