I would say that maybe 9 psi like this would be perfect 10-12 psi might be a little much. This design in the 112HH is a great match to a 6.0 displacement engine. Here is mine, if you are interested give me a call some time I can explain what we did. Joe (760) 522-8669

 

Now, I understand what you mean by the "inlet forward". I've only seen those on vettes. Are all of the 122's (even trucks) set up like this? I mentioned the 10 to 12 psi because Allen said he had done a stock LQ4 with LS6 cam and turbo living fine with 12psi. It is putting down some impressive numbers. 12 psi ought to be the same, as far as reliability is concerned, whether it's exhaust or mechanically produced......right?? What does the HH mean?

 

The 112HH (HH stands for High Helix) which has 10 more degrees of twist to the rotors is a great Supercharger for a 6.0. I have severeral customers that use the 112HH and love them because they have all the low end torque of the 112 with more on the top due to the High Helix and different discharge porting.

This particular design is used on the SSR and TrailBlazer SS. There are similar designs on the Corvette, GTO and CTSV.

 

I'll give you a call tomorrow. Where are you located? Hate to give you left coast guys a call too early in the AM. Don't want to get you up too early. Early = grumpy!

 

Feel free to give me a call anytime, I wake early!

 

I see 10 pounds of boost with my 122 with a 3.0 pulley. That is with stock heads, I am sure once I put on the wcch stage 2 and a cam it will go down some.

 

Cam is stock? Stock exhaust manifolds? Cats?

 

My truck only makes 7.5 lbs of boost with the 2.8 pulley. I have an LQ9 6.0 with dynatech long tubes and cats and magnaflow exhaust. The lowend is great but it lacks topend. How much is the 112hh swap? Or should I go with the 122? I believe my setup is maxed now. I run the stock cam as well.

 

What ever became of this?

 

i have the 112hh from joe,the thing makes great power, made 460hp,440tq w/6psi(3.2pulley)on a tbss stock moter,cam,heads .getting retuned at tune time performance in nj.for new upgrades will post #'s( 75 shot of nitrous,9psi,4''cai,new exh) looking for 575-600,what ever you get joe will be a big help.