Which one can get up to 6-8 psi at the lowest rpm on a 496ci?

Feel free to make any assumptions and recommendations you want about what pullies are used.

The other factor is price:
D-1SC ~2900
F-1 ~3400
F-1R ~3700

The plan is to have the SC generating full boost at the lowest rpm possible (within reason), then waste away any that I don't want to use with my home made boost controller.

 

it will probably be one of the F's due to the higer internal gearing.

The F-1 fits in the regular P1sc/D1sc kit too I believe so you would have the ease of install and fitment with your brackets.

the F1R I don't know much about fitment.

 

That sounds like a unique approach to supercharging. Just out of curiousity, what are you looking to gain by doing it this way??

 

Some of this thinking may not be right, but here is where I was coming from. Say I wanted a max boost of 8 psi. Then I would get a certain set of pullies. The choice of pullies would be taking into account the compressor map, airflow requirements of the engine, and maybe some rpm figure, such as where I am going to shift. Since the supercharger isn't linear as far as airflow and speed, it won't generate 8psi down at 2000 engine rpm.

Now if I chose pullies that maxed out the supercharger speed at my rev limiter, (5600) then it would probably be producing way more than 8psi at that speed. But with my boost controller, I can waste off the extra flow the supercharger is producing, thus limiting the boost to 8psi. With this choice of pullies, maybe the supercharger will be up to 8psi much sooner.

Technically I won't be gaining anything power wise since I am wasting away energy turning the supercharger faster than it needs to go just to make 8psi. But, the boost controller would let me set the boost anywhere I want without changing pullies. I could have my microcontroller adjust the boost to stop tire spin...

 

Sounds reasonable to do. I'd think something like this would work for you also.

http://innovativeturbo.com/cgi-bin/h...83345196744270

 

I agree with TPI 383, go turbo if you want to do that or put on a roots style supercharger. I can't see why you would want boost at that low of a RPM with a large engine. Blowing off excess belt driven boost is like riding the brakes to limit wheel spin, there are better ways.

 

I don't think TPl383 said I should go turbo. The innovative turbo link was for an electronic boost controller I believe. I agree that wasting off boost is exactly that, a waste of power, but if the pulley setup that yields 8psi down low makes 20psi at 5500rpm, I can't use that much. In that case it would be a good idea to waste some volume off to get the pressure down to 8psi where my motor is happy.

 

only down side is your killin a lot of power blowin boost out the "wastegate" so to speak...