tuning q for 730 ecm

[Dave Zug]

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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