tuning q for 730 ecm

[Dave Zug]

I missed the obvious.. thinking too hard.

The dynamics are boggling. I think aliens invented the TC anyway. ;-)

----- Original Message -----
From: Bruce Plecan <nacelp at bright.net>
To: <gmecm at diy-efi.org>
Sent: Tuesday, October 17, 2000 6:05 PM
Subject: Re: tuning q for 730 ecm


>
> I think tis easier then that.
> Autos give you addition torque multiplication (via converter), but the
down
> side is slippage (slippage is a waste of heat energey).
> Not wasting this heat energy gives ya some HP.
> Depending on converter, this slippage can be 7-15%.
> Down side, is all that more inertia to change speeds SUDDENLY during a
gear
> change.
> Bruce
>
>
>
>
>
> > Heres what I think the reason is it works for some and not others:
> >
> > TCC lock at the track works to better the ET if your setup makes more
> > average power at RPM's BELOW your normal auto shift point with TC
unlocked
> > (or if your setup makes more average power below where you MANUALLY
shift
> > your auto trans and you didn't realize it.). If you can lock the TC at
> your
> > peak power it serves to extend or flatten the power curve as it holds
peak
> > RPM for a longer period. Think of it as a switch that changes your
3.73's
> > into 3.42's (well, to illustrate anyway). Use the 373's for takeoff and
> > switch to 342's to keep your 1/4 mi RPM's from extending too far above
> > average peak power.
> >
> > If yer gonna lock it, Dont lock it at too low a RPM if you make more
power
> > in the upper range.... you're just delaying the good R's arrival.
> >
> > Locking it is cheating.. whereas N2O, for example is "natures" mod  LOL
> ;-)
> >
> > My $0.015 Now back to your regularly scheduled EFI content.
> >
> > ----- Original Message -----
> > From: <ECMnut at aol.com>
> > To: <gmecm at diy-efi.org>
> > Sent: Tuesday, October 17, 2000 4:54 PM
> > Subject: Re: tuning q for 730 ecm
> >
> >
> > > Sorry for the earlier blank reply..  The TC lockup works for my
syclone.
> > > good for about a tenth in a 12 second truck with stock trans &
> convertor.
> > > I have a drawing for which adld pins to short.
> > >   http://www.enzoco.com/mike/syclone/lockup.htm
> > > Crappy sketch, but someone from the F-Body list must have liked it, as
> > > he scarfed it and put it on his own page.  Very simple.. You just
short
> > the
> > > outside top row pins on the aldl connector together..  The TCC locks
in
> > > any gear but first.  It unlock if youtrip a brake pedal switch, or
> return
> > to
> > > firsr gear.  If you like boost, this tends to shorten TC clutch life.
> > > Cheers,
> > > MV
> > >
> > > >  I think that its hit or miss whether you lock the TC or not for
track
> > use.
> > > >
> > > >   A LOT of GN guys lock the TC.  This is why Precision Industries
> > created
> > > >  TC's with multi-clutch designs.  There's a group of people who will
> > swear
> > > >  that they gain 0.1 and 1mph for locking up the TC in all gears
above
> > > first.
> > > >   So - when the car hits second the TC locks.  Some people have
tried
> > this
> > > >  'trick' and not seen anything.  There's even a couple magazine
> articles
> > > >  which show car gaining a tenth by manually locking the coverter
above
> > > first
> > > >  gear.  I personally have never tried it.  However, I might try it
> this
> > > > weekend
> > > >  for shits and giggles to see if it works.
> > > >
> >
>
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> >
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