2305-4060 383 Small Block Chevy FX Series -21cc Dish Top SBC 23 Degree Forged Piston Set 4.060 inch bore Pin Dia.: 0.927" Comp Height: 1.425" Bore Size 4165 in 105700 mm Obviously custom bore size pistons

Obviously custom bore size pistons are non-returnable

We then pin fit the piston pin bores accordingly for the

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

Approx Comp Ratio: 58cc-13

We need the engine block cylinder bore size

2305-4060 383 Small Block Chevy FX Series -21cc Dish Top SBC 23 Degree Forged Piston Set 4.060 inch bore Pin Dia.: 0.927" Comp Height: 1.425" Bore Size 4165 in 105700 mm Obviously custom bore size pistons388 Small Block Chevy, FX, Comp Height: 1. 425, 21cc Dish 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 10. 08, 64cc 9. 51, 70cc 8. 99 *