2108-4000 350 Small Block Chevy FX Series +4cc Dome 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 When you order this option

When you order this option with a new set of LS

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

336 Small Block Chevy

-13cc Dish Top

2108-4000 350 Small Block Chevy FX Series +4cc Dome 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 When you order this option350 Small Block Chevy, FX, Comp Height: 1. 26, +4cc Dome Top, PIN: . 927", Full Floating or Press Fit, Ring Groove: 1. 2 1. 2 3MM, Stroke: 3. 480", ROD: 6, Approx Comp Ratio: 58cc 12. 51, 64cc 11. 52, 70cc 10. 66 *