pt67 T4 full boost on a 2.3

red97gsx · 09-08-2008, 07:56 PM

Does anyone know about what full boost would be on a built 6 bolt 2.3 with BC 280's running on pump gas with meth. I have supporting mods required. (see below)

I was going to get a FP GT3582HTA T3 and have a chance to get a T4 PT67 with a .68 a/r. Just trying to see how laggy it would be on the street. Car will be street driven 80% of the time. Goals are 550 + AWHP on pump with meth. Currently at 434 AWHP on my FP3065. Below are my mods

6 bolt 2.3 stroker- block bored, linebored, etc (All engine internals balanced to .5 gram and crankshaft knife edged)
Forged 2.4 crank
wiesco .20 forged pistons
H beam rods
ARP main, rod, head studs
balance shaft elimination kit
Stage 3 head job with 3mm lash adjusters, SI double valve springs
BC 280's
new OEM oil pump assembly
cometic head gasket
magnus intake
1g throttle body ported to 65
new FP exhaust manifold coated
new Forced Performance 3065 w/ o2 housing, 44 tial WG
3" exhaust no cat
GM MAF and translator
coil on plug setup
MSD DIS-2 with tach adapter
Race Turbonetics race FMIC with custom short route
twin Spal electric blower fans
PTE 880's
Walbro 255 with upgraded SS fuel supply and return lines
Aeromotive AFPR
Dsmlink
AEM Wideband sensor
Tial 50mm BOV
external engine oil cooler
Poly engine and trans mounts
Fidanza lightweight flywheel and ACT 2600 clutch setup
Snow performance stage 2 methanol kit
Shep stage 3 transmission

Thank you in advance. I don't want to make a mistake and buy a turbo that will reach my goal, but with the sacrifice of streetability. My 3065 is full boost (27psi) at less than 4200.

TheBoz · 09-09-2008, 09:06 AM

I am running the DSM88HTA which is more or less a t67 and I hit full boost at 5300 rpm on pump gas, on a 2.0l. So with a 2.3 you should see it before that.

95GSXracer · 09-15-2008, 04:54 AM

The 88HTA has a completely different compressor wheel than the T67, and is one of FPs quick spooling designs. I can't help either though, I ran a T67 but in a .82 t3 housing and saw 30 psi by 5700-5800 with 272s on a 2.3, for whatever that's worth...