I getting ready to order a set of pistons for my LS2 402. I really don't know which ones to get theres so many different choices. I'll be running a TNT 250 shot for now. I would like to run around 11.5- 12 to 1 compression. I also haven't bought heads yet, think I'm going to go with a set of ported L92's.

 

I'm running some off the shelf diamonds right now and they have been good. You could get the PN 11518 and with a 66cc chamber you'll get about 11.7:1 comp. I have also ran wiseco and mahle both where good also.

 

custom made wiseco's here....