Ford 390 FE Forged F/T Piston Set 4.080 -5cc

The ICON PISTONS Ford 390 FE Forged F/T Piston Set 4.080 -5cc (SKU ICNIC578C.030) is a complete eight-piston forged solution engineered for high-performance Ford FE-series engine builds. Designed with a 4.080-inch bore diameter and -5cc dome compression geometry, this piston set delivers the precision fit and structural integrity required for naturally aspirated and forced-induction applications where reliability under sustained load is non-negotiable.

Each piston features 1/16 x 1/16 x 3/16-inch ring groove dimensions, a specification that defines compatibility with standard FE-series ring packages and ensures proper seal integrity across the compression and oil control rings. The forged construction—as opposed to cast alternatives—provides superior strength-to-weight ratio and better resistance to detonation events, a critical advantage in street and competition engines operating at elevated boost levels or high octane fuel ratings. The -5cc dome creates a compression ratio suited to engines built with matching cylinder heads and intake manifold geometry; buyers must verify compatibility with their specific short-block and head combination before ordering.

This piston set addresses the needs of engine builders and performance enthusiasts restoring or upgrading classic Ford FE big-blocks—including 390, 406, 427, and 428 variants. The forged F/T designation indicates floating-pin architecture optimized for quick revving and reduced friction at high RPM. Serious builds requiring OEM-equivalent quality with modern manufacturing tolerances, long-term durability in daily or weekend driving, and proven performance across years of FE engine development will find this set a reliable core component for a complete short-block assembly.