Jack Daniels

I think from the reading I've done (and I've got more to do) I've come to these (very preliminary) conclusions:

1. Roots make great power down low. Somewhat limited top end.
2. Centrifigul, being belt driven, make power a little bit later in the powerband, but make the BEST power up top.
3. Kenne-Bell (twin-screw)---down low and up top power both, although up top maybe not quite as much as a centrifigul.

So, all else equal it seems like the KB is ideal for a street car as it has low and high end both.

But here is the question--do engines handle all blower types the same? For example, could I run a much higher boost in a roots than I could in KB? Or vice versa? Or maybe centrifiguls can give the most boost given a particular compression ratio?

Thanks fellas.

Jack Daniels

Oh yea,and the other part was the gas mileage. I guess if you stay with stock compression ratio gas mileage should be roughly equivalent given equivalent driving conditions? Don't see how the laws of physics would permit anything else but I thought I'd ask! Thanks.

madmatt9471

Yes! You can have a small motor (our stock 346 CID) with BOOST and still get great gas mileage! This is how mine is set-up - great power and great gas mileage

With any top mount Supercharger one will need a different hood in order for it to fit!

I personally would like to do a D1 ProCharger and see what it does on mine

Thanks,Matt

clemsondave

F1

nmp27

F1

BLOWNBLUEZ06

The new higher helix "roots" blowers made by Magnuson, called the TVS series (or MP1900/2300) are providing many with excellent#'s although I don't think they're ready for the C5's yet. See MTI's success with them in the C6 F/I forum. Nobody is really pushing them to their maximum potential yet either. Kenny Duttweiler made 950hp on 15psi with the MP2300.

JustinStrife

That's always been the dealbreaker for me for top mount blowers.

Matt if you ever switch headunits, you might as well just step it up to an F1. I have a D1 now, and I doubt there's a big difference between your unit and mine(that didn't sound right ). For me the D1 is good for my end goals(700rwhp), but for you, the F1 might be more practical.

Will

Drewstein

A note on fuel mileage. I just burned through a half tank of fuel during a cruise on Sunday (5/3) and still got 20mpg all told. I made quite a few runs over 100mph included in that.

FreddyG

Those are what come on the 2009 CTS-V and the New ZR1 too.

T A WS6 M6

LOL

You just used "F1" and "practical" in the same sentence.

Great unit, BTW.

Sorry for thread res, but it had to be said.

SleepieAce

Procharger works fine for me. Gas mileage only changes if you stand on the pedal constantly.

JustinStrife

Well it's not like a supercharger is practical on our cars. Come on man. Most people would say 345-400hp is more than anybody could possibly ever need....

user_name

To the OP, what is "massive HP"?

If 550rwhp is massive you could go with a KB or Maggie. Both would be great for a DD. I'd lean towards the Maggie b/c they have shown to be extremely reliable and are cheaper.

If massive HP is 700, 800, or more you will be going centrifugal.

Your mpg should barely change on any of those IF you stay out of boost. It is easier to do that with a centri.

CYA-Vett

On the street yes. I always wonder why people are so attracted to the low end torque of the roots blowers, I run my centrifugal blower at 60% on the street and can spin the tires at 80 mph, I'm not sure how safe more low end torque would be, my car is already dangerous. To each his own I guess...

JustinStrife

I'd like more power down low myself, but am looking at 402+ cubic inches to give me what I need, vs switching to a different style blower(I like how smooth the power comes on with my D1).

_Will_

Maggie's aren't cheaper any more. Kenne Bell comes with a hood and I believe it's still cheaper.

Maggies do have more hood options though. The Kenne Bell hood is atrocious IMO.