2038-3915 283 Small Block Chevy FX Series +4cc Dome Top SBC 23 Degree Forged Piston Set 3.915 inch bore Pin Dia.: 0.927" Comp Height: 1.8" Piston Ring Kit Option:Pistons - Pins - Locs With DSS Racing Rings in a Kit 0 mm Gas Nitride Stainless

0 mm Gas Nitride Stainless Steel Top Ring - Napier Second Ring with Flex Vent Oil Control Rings

266 Chevy V6

390 Small Block Chevy

313 Small Block Chevy

One or two replacements might make sense

2038-3915 283 Small Block Chevy FX Series +4cc Dome Top SBC 23 Degree Forged Piston Set 3.915 inch bore Pin Dia.: 0.927" Comp Height: 1.8" Piston Ring Kit Option:Pistons - Pins - Locs With DSS Racing Rings in a Kit 0 mm Gas Nitride Stainless289 Small Block Chevy, FX, Comp Height: 1. 8, +4cc Dome Top, PIN: . 927", Full Floating or Press Fit, Ring Groove: 1. 2 1. 2 3MM, Stroke: 3. 000", ROD: 5. 7, Approx Comp Ratio: 58cc 10. 56, 64cc 9. 73, 70cc 9. 01 *