2005-4040 4.3 Chevy V6 FX Series -21cc Dish Top V6 23 Degree Forged Piston Set 4.040 inch bore Pin Dia.: 0.927" Comp Height: 1.56" Piston Series Option:FX-1 4032 Alloy best engine building practices dictate

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

You will be required to do whatever it takes to match your other pistons weight

When you order this option with a new set of LS

more than that and it would have been more cost effective and better to replace the whole set

Approx Comp Ratio: 58cc-11

2005-4040 4.3 Chevy V6 FX Series -21cc Dish Top V6 23 Degree Forged Piston Set 4.040 inch bore Pin Dia.: 0.927" Comp Height: 1.56" Piston Series Option:FX-1 4032 Alloy best engine building practices dictate268 Chevy V6, 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. 38, 64cc 8. 84, 70cc 8. 36 *