got a guy selling some pistons from a 2006 vette with low mileage, my question is what pistons are these? LS2/LQ9 pistons? If i were to put them in a iron 63.0 block, would that make the engine a LQ9? thanks fellas

 

anybody?

 

The pistons, as long as they are from the base model LS2 and not the ZO6 are just 4" bore hypereutectic flat-top's. The use of them in a LQ4 would give you the same compression as a LQ9, because as you surmised the LQ9/LS2 uses the same pistons. You would need the matching set of floating pin rods to go with the pistons though.