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" Approx Comp Ratio: 58cc-9

Approx Comp Ratio: 58cc-9

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

1) Single SX series replacement piston with wrist pin and pin locs

You will be required to do whatever it takes to match your other pistons weight

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" Approx Comp Ratio: 58cc-9377 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 *