I have a 408ci stroker ls and am going forced induction. Car is around 9.5:1 cr and my question is, will a s480 t6 1.1ar get me to my power goal of around 900whp? It's a six speed car that's why I was wanting to run the 1.1ar instead of 1.32 so it would have faster spool time. Its a street car as well. Has ported LS3 top end and a 102mm tb. 1 5/8 headers with 2.5" cross pipe and 4" down pipe.

 

Are they flipped shorty headers? Or are you considering a mid/rear-mount turbo?

Either way, yes, the t6 s480 can get you to 900rwhp through a 6spd.

 

Awesome. You think so even on 93 octane? And they're cxracing turbo headers for 240sx.

 

No way on 93 only. 93+meth should get you there as well as e85.

 

I got to 800 on low boost, 93 octane and 12psi on my 408 and s480 through an auto. Added the meth for cooling afterwards

 

I'll be happy with 800whp lol.

 

This with a 1.1 ar?

 

Sorry, no 1.32

 

on my 416 i made 900 at 18psi with a t4 s480.... so your fine lol. mines billet wheel 1.32 but t4! and compact compressor cover

 

6 speed car?

 

96/1.32 would spool fine on a 408 if you do the crossover right.

 

Elaborate please.
Didn't know there was a wrong way lol.
It'll be 2.5".

 

It will look like this when finished.

 

We've done the back to back testing with 2.5 merged to 3 versus a fully divided to the flange 2.25 using a Borg Warner turbo. The fully divided crossover made the turbo respond right at 500 rpm sooner.