KB Hypereutectic Dome Piston Set - SB Chevy 283-400 - Bore Size: 4.040", Stroke: 3.250", Rod Length: 5.700" 921015 one LH and one RH

one LH and one RH

250 in Valve Stem

Fiber Filter

Bell's high-end Victory R

This kit allows you to effectively tune pump volume and fuel delivery rate

KB Hypereutectic Dome Piston Set - SB Chevy 283-400 - Bore Size: 4.040", Stroke: 3.250", Rod Length: 5.700" 921015 one LH and one RHKeith 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