KB Hypereutectic Flat Top Piston Set - SB Ford 289-351W - Bore Size: 4.030", Stroke: 3.400", Rod Length: 5.400" Helmet Skirt 8" from the center of

8" from the center of the axle to the center of the heim

172 in Thick

User Definable Resistance Setting Program Between 0-280 Ohms

Universal Dash Knobs work great to add that extra touch to your dash

KB Hypereutectic Flat Top Piston Set - SB Ford 289-351W - Bore Size: 4.030", Stroke: 3.400", Rod Length: 5.400" Helmet Skirt 8" from the center ofKeith 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