Todd's sure fire blower sale - Fred,

[Todd....!!]

Hpwdy Bill,

Just wanted to mention that if you pumped 15 lbs. of boost into say, a
440, you will DEFINITELY be pushin WAY more than 100 hp, more like 400+
additional....depending on the type of fuel being used....

Later....

Todd...

----------------------------

Bill Edgeworth wrote:
> 
> >
> >
> >  I was curious, so I called Blower Drive Service when I bought a 6-71 a
> > few years ago.  They said a stock, used blower without internal damage
> > should make 12-15 PSI of boost on a 454-460 sized motor with a 1:1 drive
> > ratio, and that it would take approximately 60hp to turn the blower at
> > that time.  Reworked blowers with welded or Teflon-inserted rotors would
> > make more boost.
> >
> 
> I didn't think it would build that much ( I don't know how much heat the
> stock blower would generate in the air charge) IMHO  the 12-15 psi is due to
> a lot of heat in the air. With the same boost level and a reworked blower
> you will make more power because the air charge is much cooler.
> A number I have been told for a reworked blower with the blower turning
> 6000rpm and generating 15 psi boost is 100 hp. Kind of hard on that poor old
> crank snout!
> I have also been told that a screw charger on a modern top fuel engine
> requires 800 hp at full boost and maximum rpm. I wonder what they do to the
> crank snout to handle that?