Sealed Power H660CP Cast Piston

Speed Pro H660CP: Pistons, Hypereutectic, Flat, 4.000 in. These pistons are manufactured from aluminum alloy that contains 16 percent silicon for greater strength and wear resistance. Theyre also molded in the latest permanent-mold technology to ensure the precise fit and tight bore clearances that todays top engine builders demand. Hypereutectic pistons are ideal for use in high performance street, bracket, and oval track racing and will work perfectly with normal ring end gaps. Choose the model designed for your vehicle and engine application. Speed Pro. H660CP fits these applications: CHEVROLET 5.4L/327 Chevy small block Gen I.