KB Hypereutectic Flat Top Piston Set - SB Ford 289-351W - Bore Size: 4.030", Stroke: 3.400", Rod Length: 5.400" Helmet Skirt 1967-1973 GMC K25/K2500 PickupFor use

1967-1973 GMC K25/K2500 PickupFor use on GM Powerglide automatic transmissions

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

172 in Thick

Photo realistic detail

KB Hypereutectic Flat Top Piston Set - SB Ford 289-351W - Bore Size: 4.030", Stroke: 3.400", Rod Length: 5.400" Helmet Skirt 1967-1973 GMC K25/K2500 PickupFor useKeith 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