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 With today's power levels leaving

With today's power levels leaving wall thickness in the cylinders can also help with power and longevity

266 Chevy V6

One or two replacements might make sense

390 Small Block Chevy

Approx Comp Ratio: 58cc-12

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 With today's power levels leaving289 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 *