PISTONS CHEV 383 HYP F/TOP 6.0 ROD 4.030

KB Performance Hypereutectic Pistons, Bore 4.030 in./102.362mm, Stroke 3.750 in., for 6.000 in. Conrods, Flat top, with two valve reliefs, Compression Height 1.130 in., Piston Head Volume +7.00cc, Press-fit or floating 0.927in. Pin, Uses 1/16 in. x 1/16 in. x 3/16 in. Rings (not included).Sold as a set of 8. Notes: Spacer ring included.KB Performance hypereutectic pistons are made from 390 aluminum alloy and heat-treated to T6 standards, which makes them 30 percent stronger than ordinary untreated hypereutectics. Their 100 percent CNC-machined crowns, high upper compression-ring location, gas-accumulator groove, drilled oil returns, and spiral-lock retainer grooves make these pistons outstanding for performance applications. They have a lightweight, rigid-rib skirt design that stabilizes the piston in the bore. All of this adds up to pistons that fit tighter than forged types, provide improved oil control, reduce blow-by, increase ring life, eliminate cold start-up knocking, and won't cost you an arm and a leg! Thousands of models are available, find the set and options designed for your vehicle and engine application.