2308-4060 383 Small Block Chevy FX Series +4cc Dome Top SBC 23 Degree Forged Piston Set 4.060 inch bore Pin Dia.: 0.927" Comp Height: 1.425" Stroke 3.750" Custom Bore Size Option: This

Custom Bore Size Option: This Option is perfect for Engine builders who do not want to unnecessarily oversize the cylinder bores on a block

-28cc Dish Top

426 Small Block Chevy

Because the singles you are purchasing were not made at the same time your original pistons were made there will be variations that could effect their weight

2308-4060 383 Small Block Chevy FX Series +4cc Dome Top SBC 23 Degree Forged Piston Set 4.060 inch bore Pin Dia.: 0.927" Comp Height: 1.425" Stroke 3.750" Custom Bore Size Option: This388 Small Block Chevy, FX, Comp Height: 1. 425, +4cc Dome Top, PIN: . 927", Full Floating or Press Fit, Ring Groove: 1. 2 1. 2 3MM, Stroke: 3. 750", ROD: 5. 7, Approx Comp Ratio: 58cc 13. 73, 64cc 12. 6, 70cc 11. 66 *