[QUOTE=DeadZero,Sep 11 2009, 04:24 PM] the only way you will hit 400 on a supercharger is with a dynopack.

 

Yeah on a DynoPack...

I make 380whp on a Dyno Dynamics, now I just have to figure out how to get another 20 ponies out of it. Then I'll be able to show you another one.

 

Made 406 on Dyno Dynamics 91 oct and 419 on Dyno Jet 93 oct.....had a lot of work done to the car though.

 

How will stock engine internals hold up getting wth a car around 380hp

 

it all depends in the tune

 

Like John said it depends on ur tuner. I ran a comptech kit at 11psi with 371whp and it gave me no problems....... Well except traction!

 

True that. Im on 12psi with a stock engine putting down 361 with no issues...other than traction.

 

So what frp are you guys using for 12psi and is a low comp head gasket requierd or is that just a old thought. a new map bar is also needed to right?

 

some dynopacks read low. bisi reads super low for some reason and john z made good hp on that
You can do it all u need is money to build a new motor

 

dont want to jack your thread op. but i'm looking at breaking the 400whp also. my mod list is j's header,invida single and test pipe. i will be putting on the 3.8" pulley and tuning with the aem. what size injectors do i need? i also have the gm 3 bar map. i have the VTSC with the aftercooler and front mount(i guess its called a front mount). thanks