I'm reading so many different and conflicting things and I want to tear my hair out.....What is the limit that the stock internals can handle before they blow? The reason I'm asking is I am about to put on a kenne bell (intercooled) blower on my car to replace a procharger. The only other things I have done to the car are long tube headers, off road H pipe and a Borla exhaust. Of course it will be tuned before any driving. I'm looking for 9 to 11 PSI of boost. Will the stock internals be ok with this? Thank you in advanced

 

Rods are generally the weakpoint. Most guys try to stay around 400-450hp. Your tune is going to play a big part in how long it stays together at 11 pounds but honestly if it was me I'd probably like to see a little less boost on a stock motor.

 

The commonly accepted number is 400rwhp (approx 450 at the flywheel). There are a few out there with notably more than that, and even the occasional internet tale of a guy who pushes 450rw for a while and never had a problem but most would call scenarios like that bullsh** or "tuner's luck".

Also keep in mind that you can grenade it at levels well below that commonly accepted threshold, 360rw cars sometimes never make it off the dyno, all it takes is an event like running lean or too aggressive of a tune.

Whatever you do, a good tune written by somebody who knows their crap is key to keeping it all together. Don't worry about numbers - some tuners will get a little too aggressive as to impress the customer. Make your emphasis on safe and reliable. You will hit the 400rw mark easy with that amount of boost.

 

Totally agree. I would keep her around 400. Better safe than sorry.

 

yes, the tune is going to be the biggest key in this whole thing, hopefully bama does the right thing and she will hold together for me. I think im going to leave the 9 PSI pulley on to start and see how that goes.

 

Bama? You're going to trust an f/i build to an email tune?

 

I really hope not (email tune). We all wanna save a buck here or there but when it comes to the tune there should be no shortcuts.

 

Steve's lived at 420 rwhp for years, as soon as he turned it up to 447rwhp it lasted a few months before disaster.

 

Exactly. $500 now or a few grand later.