2005-4000 350 Small Block Chevy FX Series -21cc Dish Top SBC 23 Degree Forged Piston Set 4.000 inch bore Pin Dia.: 0.927" Comp Height: 1.56" Stroke 3.480" Note: Always finish the cylinders

Note: Always finish the cylinders and check availability of rings before ordering custom bore size

best engine building practices dictate that pistons should be replaced in matched sets

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

030 over when

The extra $80

2005-4000 350 Small Block Chevy FX Series -21cc Dish Top SBC 23 Degree Forged Piston Set 4.000 inch bore Pin Dia.: 0.927" Comp Height: 1.56" Stroke 3.480" Note: Always finish the cylinders350 Small Block Chevy, FX, Comp Height: 1. 56, 21cc Dish Top, PIN: . 927", Full Floating or Press Fit, Ring Groove: 1. 2 1. 2 3MM, Stroke: 3. 480", ROD: 5. 7, Approx Comp Ratio: 58cc 9. 22, 64cc 8. 69, 70cc 8. 22 *