Re: tuning q for 730 ecm

["Programmer" <nwester@eidnet.org>]

I remember talking to Ed W. about this a long time back...he uses lock-up
early to gain the extra speed. I kinda 'ways thought that you'd lose
converter multiplication, but apparently his lock-up strategy works great.
Lyndon.

-----Original Message-----
From: Bruce Plecan <nacelp@bright.net>
To: gmecm@diy-efi.org <gmecm@diy-efi.org>
Date: October 17, 2000 7:03 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@aol.com>
>> To: <gmecm@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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