BBC Domed Piston Set 4.310 Bore +18cc

The BBC Domed Piston Set 4.310 Bore +18cc from Sportsman Racing Products is designed for serious big-block Chevrolet builders seeking high-compression power in both naturally aspirated and forced-induction applications. These pistons are specifically engineered for racers and enthusiasts who require dependable performance at high RPMs and cylinder pressures, making them suitable for street machines, strip warriors, or competition engines.

Constructed from forged aluminum, this piston set features a +18cc dome configuration that significantly increases the compression ratio, making it ideal for use with high-octane fuel. The 4.310-inch bore diameter is perfectly suited for oversized BBC blocks and modern stroker builds. The domed crown geometry enhances fuel combustion efficiency and maximizes pressure rise rates, which are critical for achieving peak horsepower in the 500+ range.

This piston set is particularly beneficial for builders upgrading to 4.310-bore BBC blocks or converting standard displacement engines to stroker configurations. The specifications for pin diameter, wall thickness, and ring groove are optimized for BBC applications, ensuring reliable sealing and minimal blow-by across the entire RPM range. Compatibility with specific cylinder head gasket surfaces and combustion chamber designs is essential for achieving the desired compression ratio.