I want to build my 350 tpi to handle a ATI procharger, But I want to only do this once so should I use all forged internals? Or where can I find Just a shortblock with forged internals? I will be topping this combo off with some 23* Ported Trick flow heads, bigmouth lower intake, 58mm arizona speed and marine throttle body, and runners, and a ported plenium , all of them ported to match, custom grinded cam. What kindove numbers should this bring me?

 

We are going to need more numbers than that. How much boost are you going to be running with the ATI? What is your cam profile going to look like? What compression ratio are you planning on. Just to name a few.

 

I want to run a 12PSI ATI with intercooler, The cam I have not yet decided any, Do you guys have any suggestions on a good cam to run with a setup like this? It is street driven, but I love the lopey sound of a bigger cam. Not a daily driver, weekend driven.The compression ratio probobly 9.0 to 1, does that sound right?

 

12psi of intercooled boost will be fine with 9:1 compression as long as everything is tuned properly. Remember also that you will probably not see 12psi with the 12psi pulley, more likley 9-10.