JE Pistons 400 SBC .500 DOME Set of 8 Pistons

JE Pistons 182068 are high-performance 2618 forged dome pistons with a +13cc dome volume, designed for Chevrolet Small Block (SBC) 378 engines, typically used in drag racing and circle track applications. These pistons feature a 4.145-inch bore, 3.500-inch crankshaft stroke, and 6.000-inch rod length. They include double pin oilers and contact reduction grooves, along with a .927-inch wrist pin, pin #927-2750-15-51S, and double spiro locks #927-042-CS. They are compatible with most aftermarket 23-degree heads and accommodate oversized valves and long duration, tight lobe separation cams, but are not compatible with Pro Topline or Brodix 11X cylinder heads.