2300-4040 383 Small Block Chevy FX Series -5cc Flat Top SBC 23 Degree Forged Piston Set 4.040 inch bore Pin Dia.: 0.927" Comp Height: 1.425" Piston Series Option:FX-1 4032 Alloy 312 Small Block Chevy

312 Small Block Chevy

They are made to order and are NOT RETURNABLE under any circumstances

Does your LS engine have press fit rods

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

350 Small Block Chevy

2300-4040 383 Small Block Chevy FX Series -5cc Flat Top SBC 23 Degree Forged Piston Set 4.040 inch bore Pin Dia.: 0.927" Comp Height: 1.425" Piston Series Option:FX-1 4032 Alloy 312 Small Block Chevy385 Small Block Chevy, FX, Comp Height: 1. 425, 5cc Flat 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 12. 04, 64cc 11. 2, 70cc 10. 45 *