2105-4000 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: 1.26" Piston Series Option:FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs we swap the std

we swap the std

including potentially having to re-balance the rotating assembly

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

422 Small Block Chevy

With today's power levels leaving wall thickness in the cylinders can also help with power and longevity

2105-4000 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: 1.26" Piston Series Option:FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs we swap the std350 Small Block Chevy, FX, Comp Height: 1. 26, 21cc Dish Top, PIN: . 927", Full Floating or Press Fit, Ring Groove: 1. 2 1. 2 3MM, Stroke: 3. 480", ROD: 6, Approx Comp Ratio: 58cc 9. 22, 64cc 8. 69, 70cc 8. 22 *