I just got a New teg, it had a built LS with 10.6:1 pistons and the head was milled twice. I was told that it is close to 11:1. It has headstuds and rods bolts,etc. I am assuming that this is too high for boost on stock sleeves?

 

On stock sleeves, you dont want to try that. 11:1 is high for an NA build, if youre boosting, you cant get a good enough tune to last more then a season. Probabaly.

 

your motor will tell you when its to high with some pings and what type of sleaves you have is irrelivant when it comes to detionation.

 

Thats true, but really, thats a nice motor, and you dont want to flub it. If you build an 11:1 tubo motor, you want to make sure the rest of your ---- is nice too.

 

Get a thicker head gasket and then should get you out of the 11 compression ratio range, gsr's are 10.5-6:1? There are plenty of "stock" gsr's making 250hp. If it's already got forged internals i would boost that bitch quick!