I have a 2000 6.0, found a set of LQ9, 05 pistons and rods. What will the comp be with these flat top pistons and 317 heads? I plan on turbo, so I want to make sure. I plan to rebalance everything, also should I have the pistons cut for PV clearance while they are out? Haven't picked a cam yet. Any other problems I'll run into?

 

LQ9 engines were 10 to one with factory head gaskets. If you just do a clean up mill on the heads and put some LS9 head gaskets on with some studs, you'll be boost ready. No real need to cut reliefs into the pistons as a turbo application only needs a 224 range .568" lift with 114 lobe separation
sized cam. You should have plenty of clearance.

 

Thanks, wanted to make sure, 1st ls build.

 

the only difference between ls2 and lq9 pistons ithat I know of is that the ls2 pistons use different piston rings, 1.2mm, 1.5mm and a 2.5mm and the lq9 uses a 1.5mm, 1.5mm, and a 2.5mm.