I have to replace the header gasket, it blew out on the way back from the Dyno run, Ill get it fixed and then hook up the Boost Gauge to see what its making as far as boost goes.

 

I agree with what has been said here... it sounds like you are making 0 psi looking at your power #'s. Definitely get a boost gauge hooked up.

 

I would do a leak down test to check cylinder pressures...lt1s hate boost brother

 

I can do that while I have the headers off to change the gaskets. Keep it coming Im open to any and all ideas to help resolve this problem

 

Well.......? any updates?

 

Nope, Sorry i had family come into town this past weekend, I hope to get back on it this evening and see what i can get done. Ill keep you posted. Thanks again for all of your input.

 

internal belt is broke... has to be

Or some kind of severe belt slip.

 

Either that or he's on a badly calibrated dyno... let's not leave that option out...

 

Okay so its been 2 months, i finally got a chance to work on my car again. I fixed all of the things that broke while on the dyno, and installed a boost gauge, and as everyone expected "0" boost!!! Guess i have to take it all apart again. Thanks to everyone that offered there advice.

 

I guess my next question is how much HP should i expect with a 9lb pulley and the other modifications listed below?

 

About 15hp or so per pound.

Hal

 

Okay thanks.

 

When you did the SC install, did you disconnect and cap off the vacuum line going from the throttle body to the passenger side valve cover?

 

i would guesstimate about 440 rwhp, if you can actually manage to get 9psi out of it. Your belt has to be tight, and running 9psi on a stock bearing powerdyne is going to give you a shortened life. Upgrade the bearings while its apart and you can get 10 psi or better, pending cam choice.

 

Okay, I FINALLY got time to work on my car this past weekend, Its not making any boost, I have a 9lbs pulley on it and getting ZERO boost. I took the SC off and took it apart expecting to find a broken belt or some other internal damage, but to my surprise everything is PERFECT. It looks like it was reciently rebuilt hardly any wear on the belt. So now Im stumped, STILL NO BOOST and SC is fine... I did notice that the blow off valve was a little loose but surely it wouldnt loose all of the boost??? HELP!!!!