bushed connecting rods are worn or in bad shape you might also consider this option to make them like new again by honing them from the stock
It can be done after the fact but pin fitting the pistons twice adds on quite a bit more labor
Please indicate your final cylinder bore size in the notes section of the shopping cart check out
Single Piston Replacement Pro Pip: Do yourself a favor and inspect all your pistons and cylinders carefully before making the decision to buy single replacements
2406-4000 383 Small Block Chevy FX Series -28cc Dish Top SBC 23 Degree Forged Piston Set 4.000 inch bore Pin Dia.: 0.927" Comp Height: 1.125" Stroke 3.250" bushed connecting rods are worn377 Small Block Chevy, FX, Comp Height: 1. 125, 28cc Dish Top, PIN: . 927", Full Floating or Press Fit, Ring Groove: 1. 2 1. 2 3MM, Stroke: 3. 750", ROD: 6, Approx Comp Ratio: 58cc 9. 2, 64cc 8. 7, 70cc 8. 27 *