KB Hypereutectic Dome Piston Set - SB Chevy 283-400 - Bore Size: 4.040", Stroke: 3.250", Rod Length: 5.700" 921015 1/2 in Bolts and Studs

1/2 in Bolts and Studs

one LH and one RH

1974-1974 Plymouth Barracuda

curved blades to provide a low profile (only 2 1/16" at widest point) for limited space applications

KB Hypereutectic Dome Piston Set - SB Chevy 283-400 - Bore Size: 4.040", Stroke: 3.250", Rod Length: 5.700" 921015 1/2 in Bolts and StudsKeith Black pistons have several important advantages over conventional alloy pistons. High silicon content yields superior thermal and wear characteristics, greater strength, scuff and seizure protection, and resistance to cracking. High silicon content also keeps heat in the combustion chambers, eliminating heat transfer and improving combustion. Pistons are machined for 5 64" top, 5 64" second and 3 16" oil ring unless noted. Sold in sets of eight