[+.060 or 4.310   Bore Diameter]

Piston & Moly Ring set compatible replacements for Chevrolet 454 - 4.310" bore @ (.060") Domed head .230" high w/2-valve reliefs. DurOshield skirt coated piston. 1970-76 Car (USA) & 1970 454-LS6; closed chamber heads Higher compression, longer life. If youre looking for pistons with an unbeatable combination of performance and value, then Speed-Pro hypereutectic pistons are for you. These pistons are manufactured from FM244 aluminum alloy, which 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. Theyre ideal for use in high performance street, bracket racing, and oval track racing and will work perfectly with normal ring end gaps.