Sportsman Racing Products 142981 Flat Top Forged Pistons, 4.320 in Bore, -3.00 cc, Big Block Chevy, Set of 8

Upgrade your Big Block Chevy engine with the Sportsman Racing Products 142981 flat top forged piston set. Designed for performance-focused builds, these pistons feature a 4.320-inch bore and a 1.270-inch compression height to support reliable fitment and consistent engine operation. The flat top design and -3.00 cc volume are suited for applications where compression characteristics and combustion chamber compatibility are important considerations.
Each set includes eight forged pistons engineered for strength and durability in demanding high-performance environments. The 1/16-inch, 1/16-inch, and 3/16-inch ring grooves accommodate commonly used performance piston ring configurations, helping builders create a dependable sealing package when matched with the proper rings and supporting components. Forged construction provides a strong foundation for street performance, racing, and custom Big Block Chevy applications.
Sportsman Racing Products part number 142981 is intended for engine builders and enthusiasts seeking a replacement or upgrade piston set with a precise flat top profile. Verify bore size, compression height, ring groove specifications, connecting rod configuration, piston-to-valve clearance, and overall engine compatibility before installation. Professional assembly practices and correct clearances are recommended for achieving dependable performance and service life.

Features:

• Brand: Sportsman Racing Products

• Part Number: 142981

• Piston Style: Flat top forged piston

• Application: Big Block Chevy

• Bore Size: 4.320 inches

• Compression Height: 1.270 inches

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

• Piston Volume: Minus 3.00 cc

• Quantity: Set of 8