SBC Dished Piston Set 4.030 Bore -19cc

The SBC Dished Piston Set 4.030 Bore -19cc is a complete eight-piston set engineered for small-block Chevy (SBC) engine builds requiring precision-machined components for high-compression or forced-induction applications. Designed for builders and performance enthusiasts who demand exact bore sizing and compression ratio control, this hypereutectic piston set delivers the durability and dimensional accuracy needed for both street and racing engines. The -19 cubic centimeter dish geometry reduces combustion chamber volume, raising compression ratio and optimizing fuel efficiency and power output across the RPM band.

Constructed from hypereutectic aluminum alloy, the SBC Dished Piston Set features superior heat dissipation and reduced thermal expansion compared to conventional cast pistons, making it ideal for sustained high-RPM operation and boost applications. The 4.030 bore specification matches late-model or overbored SBC engine blocks, while the precisely engineered ring groove dimensions (1/16 x 1/16 x 3/16 inch) ensure proper ring fit, sealing integrity, and minimal blowby. The dished top geometry not only lowers compression chamber volume but also helps manage detonation by cooling incoming charge and directing flame fronts more efficiently across the combustion chamber—critical for turbocharged or supercharged builds running premium fuel.

Engine builders constructing stroker motors, LS swap conversions with SBC block cores, or street/strip combinations benefit most from this piston set's compression control and thermal performance. Installation requires proper honing to the exact 4.030 bore tolerance, pin fitting, and rod selection to ensure correct compression height and piston-to-deck clearance. The complete set of eight pistons eliminates the need for individual sourcing and guarantees bore-to-bore consistency across all cylinders, simplifying assembly and reducing risk of misfires or power imbalances common with mismatched components.