SBC 4.030″ PISTONS +13cc DOME 3.500″ ST 6.000″ ROD 1.250″ CH

Description

Maximize your engine’s power and efficiency by upgrading to pistons engineered with precision to accommodate higher compression ratios. The +13 cc dome volume increases combustion chamber capacity, resulting in improved air-fuel mixture compression for enhanced power delivery and throttle response.

These pistons feature a 4.030″ bore diameter, ensuring a precise fit for small-block Chevy (SBC) engine blocks. This tight tolerance reduces blow-by and improves sealing, directly translating into better efficiency and longevity of your engine components.

Constructed by JE Pistons, a recognized brand in high-performance engine components, these pistons weigh 6.31 kg collectively, balancing strength with weight to reduce reciprocating mass and improve engine responsiveness. The 3.500″ stroke and 6.000″ connecting rod length optimize piston travel and rod ratio, enhancing mechanical advantage and reducing side loading on cylinder walls.

The 1.250″ compression height ensures compatibility with standard SBC configurations, facilitating straightforward installation without extensive modifications. The precise dimensions—66.00 cm in length, 15.20 cm in width, and 30.50 cm in height—reflect the packaging needed for seamless integration into your engine assembly.

By incorporating a +13 cc dome design, these pistons increase compression ratio without requiring costly head machining or gasket changes, delivering a practical, performance-focused solution. Their robust construction and exact specifications help maintain durability under demanding operating conditions, essential for both street and track applications.

This piston set provides a finely tuned balance of increased combustion efficiency, mechanical reliability, and dimensional accuracy, making it an indispensable upgrade for serious SBC engine builders seeking measurable performance gains.