If I'm not wrong though, the HP lost through the
torque converter is greatest at the speeds where
the variable between the input and output side is
the greatest, and the loss decreases as the two
sides approach the same speed (direct drive, in
high gear). That means you might be losing 12 -
15% at standing start, but the faster the car
goes, the less you lose. By the time you approach
your top speed, there is virtually no difference
in the transmissions, as they have done their
work and it is now a direct drive (or OD)
function.
Dick J
--- Joe Timney <joetimney@dol.net> wrote:
> As far as Automatics go, I don't have figures
> but I remember a Horsepower
> usage ranking that went something like this:
> Highest to Lowest
> Torqueflite
> 400 Turbo
> C6
> 350 Turbo
> C4
> Powerglide
> The article was old and was written before all
> the OD autos became popular.
> Most of the Od trans are somewhat weak and
> require big $$$ to hop upas far as
> I know.
>
> Anybody else have any knowledge they want to
> share?
>
> joe( love a stick shift...wish we had one in
> the S-10)
>
>
> John Beckett wrote:
>
> > Geeeees, That's about 87 HP if I'm
> calculating it correctly for that old
> > combination of mine. Boy if that don't make
> you want to throw out your old
> > automatic...or at least your old T-400...I
> don't know what would.
> >
> > See what you started again Keith.
> >
> > John Beckett, LSR #79, E/FCC
> >
> > ----- Original Message -----
> > From: <DrMayf@aol.com>
> > To: <landspeedracer@email.msn.com>;
> <ARDUNDOUG@aol.com>;
> > <land-speed@autox.team.net>
> > Sent: Sunday, August 27, 2000 1:14 PM
> > Subject: Re: Ford C-4 Tranny Gear
> Deliberations
> >
> > > John, this is my simple way of determining
> HP given another hp:
> > >
> > > HP2 = HP1 (new speed^3/old speed^3)
> > >
> > > where HP2 is the new horsepower desired
> > > HP1 is the old horsepower
> needed to run at a given speed
> > >
> > > in this case HP2 = HP1
> (211*211*211/200*200*200) = HP1 (1.17424)
> > >
> > > or it will take about 17.4% more
> horsepower.
> > >
> > > Remember HP is a function of the cube of
> speed.
> > >
> > > mayf
>
>
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