willizm

iTrader: (10)

Hi all, figure I'd ask to get peoples opinions on which AR would be ideal for my setup. .96 or 1.15

Currently have
LS1 346ci forged from speed inc
KYTP Front Mount Header single turbo kit
TC78 .96AR
TU1 Cam
95lb injectors
317 heads
9.5:1 CR
e85
Tial BOV and WG 44mm

Right now i am making about 700whp at 17.5 psi but have alot of power loss up top. My suspicious have been narrowed down to the 68mm turbine wheel and maybe the .96 AR housing. I'd like to make power to redline and push maybe 20psi.

Bonus question, right now I have a 10lb spring (Big Red) in the WG and control boost with an AEM Truboost controller. If I want to push a little more boost up top would I be better off sticking a 13lb spring (Big Blue) in the WG? Right now I'm at a point where adding DC to the controller isn't getting me any more boost pressure, but it might be primarily due to the turbine wheel hitting back pressure.

Thoughts?


Thanks
-Will

got-a-ls1

iTrader: (12)

i didnt know they even offered a 1.15. i have a .81 on my 5.3 and it rips.. i dont think im gonna change it even when i switch to auto

willizm

iTrader: (10)

You know what, I think you're right. They only go up to a .96 AR. The gt42 style has larger ar's and I think I was thinking of pt88's or something. Hues it's .96 for me.

evo462

iTrader: (27)

You could look at the turbonetics 7675 or 7875 with a 1.15 housing