472 on a dynocom.
car is a 8:1 355 LT4 heads/intake mild port work
P1SC 8inch crank 3.4 blower 12 rib setup was only hitting 13psi at 6500
3.42 gear 6 speed car.

 

ahmmmm How was the AFR? Was the timing dialed in?

 

+1

 

ill find out more tonight, i was not at the dyno durring tuning, ive been at the hospital with my prematurely born son. but when the car gets home (they broke the car) ill bring up the tune on my tunercats and see how much timing they gave it. also i had it tuned on 110 octane.

 

With a mild top end and low compression that doesn't sound too far off to me. There may be a bit more in it. Boost can be a crazy thing. I gain very little hp/psi below 10 psi, above that it starts to add up quick. What was peak tq and at what rpm and psi?

What cam?

I'm not familiar with dynocom - Is it loaded like a mustang or does it read higher like the dynojets?

What did they break?

Wish your family well.

 

feels like the step up gear broke on the charger, they where revving it to 6K i guess
the cam is the GM846 cam, with mild ported LT4 heads and intake.

 

So 8:1 it might make 275 to the wheels without the blower (realistically that could vary greatly)

200/13 ~ 15.4 hp per psi of boost - which isn't real far off all things considered. The P1SC is a smaller charger right (sorry I don't know the belt turbos well) - So again I'm guessing your setup is very similar to mine. I think I made around 475 at low teen boost.

There may be something holding you back - but I don't think the numbers are too far off.

 

i now have to find a new blower i confirmed that the transmission in the unit is junk... its just gonna be cheaper for me to buy a D1sc if i can find one...

 

I have one for sale almost no mile with a 3.4 pulley 12 rib set up $1500 plus ship

Steve

 

sounds a little low to me --maybe the low compression?

I have a 355 9:1 compression, no head porting (valves, springs, cam, P1SC, others) running 14psi. dynoed at 535rwhp and 574rwtq.
I specifically did not port my heads knowing that my charger was smaller and unable to makeup for it though. Instead I put a reverse split dual plane cam.

Either way those numbers are not disappointing!