SPH616CP 040 SUIT CHEV SB 400 V8. If you're 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. They're also molded in the latest permanent-mold technology to ensure the precise fit and tight bore clearances that today's top engine builders demand. They're ideal for use in high performance street, bracket racing, and oval track racing and will work perfectly with normal ring end gaps. Chevy small block Gen I 400 C.I.D. V8. Bore (in): 4.165 in. Piston Style: Flat top, with four valve reliefs. Piston Material: Hypereutectic aluminum. Compression Distance (in): 1.425 in. Piston Head Volume (cc): -6.00cc. Wrist Pin Style: Press-fit. Pin Diameter (in): 0.927 in. Piston Ring Thickness: 5/64 in. x 5/64 in. x 3/16 in. Quantity: Sold as a set of 8.
