2403-4155 383 Small Block Chevy FX Series -16cc Dish Top SBC 23 Degree Forged Piston Set 4.155 inch bore Pin Dia.: 0.927" Comp Height: 1.125" Bore Size 4125 in 104690 mm They are made to order

They are made to order and are NOT RETURNABLE under any circumstances

330 Gen 5 LT Direct Injection

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

337 Small Block Chevy

When you order this option with a new set of LS

2403-4155 383 Small Block Chevy FX Series -16cc Dish Top SBC 23 Degree Forged Piston Set 4.155 inch bore Pin Dia.: 0.927" Comp Height: 1.125" Bore Size 4125 in 104690 mm They are made to order407 Small Block Chevy, FX, Comp Height: 1. 125, 16cc 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 11. 05, 64cc 10. 39, 70cc 9. 79 *