Best results with a GT350 turbine vs. a 69 trim TO4 turbine

[GREG O'Brien]

Hey everybody... I'm in the market for a larger turbo... right now I have a TA/TE60 type setup from precision turbo.

I am looking to step up to something bigger. I've selected my compressor, but I'm undecided on the turbine. I know I need either a GT350 or T04-69 trim (aka 'O' trim) to get the job done. The popular 'P' 76trim is too big and unstreetable for what I am doing.

Anyway - I'm curious what's best HP or ET/MPH you guys have EXPERIENCED with either of these wheels.

I'd like to go with a GT350 - but if it can't hack 500rwhp (550 or so at the flywheel) - then I'm going to need the 69 trim T04.

 

[brian]

Greg,
I have the GT350, on my PT-61. It spools like mad, and makes good power as well.
So far at only 21psi, I have gone 11.2 @121. I am looking to turn it up a little,, but, I am pretty happy with its performance so far.
Hope this helps.
Brian

 

[GREG O'Brien]

that is essentially what i am looking to get... only an SC61 (uses the Ford style T3 turbine housing but the wheels are the same).

right now I have an SC60 (T31 turbine/60-1 compressor).

what is the weight of your car? or a rough 'guestimate'...