Forged 10.6 CR 383 with stock GM LT4 heads. I plan to have a good intercooler and alcohol/water injection. What is the max boost I could run on 93 pump gas without cutting timing back excessively? Would it even be worth it to put turbos on this? If yes, would a pair of T4s be too big? If possible, I would like buy turbos that I won't outgrow if I decide to drop the CR for some real boost.
Thank you in advance!

 

That is about the compression I have and I am running 7lbs of boost at 6000rpm. Still in the process of tuning. We have cut the total advance back to 24 degrees, but I am still getting 8 degrees of knock retard at the beginning of WOT. It gradually goes down to 3 toward the end of the run. I don't have an intercooler, but do have alcohol/water injection from Kennedy's Dyno tune.

Hope to lower the CR and get a true blower cam in future but right now have to make do with what I got. Didn't really plan on a blower when I was having the engine built. I did go will all forged bottom end however.

 

I think your cam has alot to do with the boost question. If you have a 110-112 lsa cam you wont see alot of boost anyways. Boost is very combo specific. At this point your easiest way to lower the CR would be to have the chambers CNCd.