SBC Dished Piston Set 4.030 Bore -16cc

The SBC Dished Piston Set 4.030 Bore -16cc from Sportsman Racing Products is a forged small-block Chevy piston set engineered for high-performance marine and racing engines where precise compression ratios and reliable power delivery are non-negotiable. Built for serious boaters and engine builders who demand consistency across all eight cylinders, this piston set delivers the compression control and durability required in salt-water and freshwater applications. Whether you're rebuilding a performance cruiser or optimizing a racing platform, the correct piston selection directly impacts fuel efficiency, detonation resistance, and overall engine longevity on the water.

Each piston in this eight-piece forged set features a 4.030-inch bore diameter with inverted dome geometry and -16cc displacement reduction—a design choice that lowers compression volume and is ideal for naturally aspirated engines requiring conservative compression ratios or engines running on regular-grade fuel. The ring groove configuration of 1/16 x 1/16 x 3/16 inches accommodates standard compression and oil-control rings, ensuring proper sealing and blow-by management. Forged construction provides superior strength and heat resistance compared to cast alternatives, critical for sustained high-rpm operation and thermal cycling common in marine powerplants where water-cooled blocks run under constant load.

This piston set is ideal for small-block Chevy engine rebuilds in displacement ranges from 283 to 400 cubic inches, making it compatible with classic boat engines, modern performance recreations, and racing platforms. Installation requires proper honing to final bore diameter, correct ring gap setting, and careful piston-to-wall clearance verification—tasks best performed by experienced engine machinists or builders familiar with marine engine assembly. The -16cc dome design pairs well with moderate-lift cam profiles and standard intake manifolds, delivering responsive acceleration and smooth mid-range torque suitable for cruising as well as competitive applications.