Guess I should have explained lol. I meant that 17psi out of two different sized turbos will bot equal the same cylinder pressure or horsepower. Therefore limiting yourself 17psi doesn't mean you won't lift the heads.

 

this type of answer is exactly what I expected to get from you, don't know what to say so lets cover it up with something stupid.

 

so you want 17psi with out lifting the heads. but you want the most power you can get out of it limiting you to 17psi. maybe a 91mm or 94mm compressor will get you what you want.

dosent camshaft and the intake manifold set your powerband

 

Man this thread got littered with smartass comments and no value added info. Why not just help the guy out instead of just trying to sound smart.

Ayousef, I would suggest you do the math or take a look at this link for the air consumption of a 427 LS1 based on RPM and boost pressure as a ballpark estimate from forced inductions.com
http://forcedinductions.com/consumption427.htm

So now you know how much air it will consume. Now look up the compressor maps for different turbo's and see what will put you in a decent efficiency range. Again this will just be ballpark numbers, but it should give you a good idea as to the sizing of the turbo you'll need. Of course once you have a few turbo's in mind, talk to some of the sponsors and see what they recommend based on the setup, i.e. fuel, cam, streetcar vs. drag,etc. I always think its more fun to try doing the numbers yourself and then see if others agree vs. just getting someone to spec something for you.

 

most of the smartass comments are from people I debated with several years ago and they still couldn't get the hatred out of their system.

Thanks for the advice this is sort of what I was looking for, I appreciate the help!

 

We will have a custom camshaft specced for the combo, however intake manifold will probably be an LS3 stock intake which I know will make the power, unless my friend wants to spend a little more

 

truck intake will make more low end power than the ls3 intake, will handle boost just fine