RPM WS6

iTrader: (3)

My transmission downshifts to first quicker when in 3rd rather than OD, so I tend to use 3rd for a WOT blast where I know I should get a downshift to first. Upshifts seem to be the same between the two, and downshifts to any other gear seem the same as well. Only difference seems to be going into first.

Anyway, the builder of my trans has recommended that "3" or "D" be used for WOT rather than "OD". What does everyone else here do? Espeically those of you with built trannies like mine...

RPM WS6

iTrader: (3)

TTT

Red2000SS

I can honestly say it doesn't seem to make a difference that I can notice at all. Mash the pedal going an appropriate speed and it will downshift to first. Can't tell any difference whether it was in D or OD at the time. I have a stock transmission though.

That said, I always leave it in D at the track. I can't see how it could possibly make a difference whether you leave with it in D or OD at the track - it is still going to leave in 1st, shift to 2nd, and then 3rd before you hit the traps. I will never hit 4th until you let off the gas after the run is over. Maybe this is urban legend - I haven't done any scientific testing...

02 SOM SS

I've gotten into the habit of driving in town in drive after getting the verter. I race in drive also. I don't know that it makes any real difference though.

Kurt

RPM WS6

iTrader: (3)

I know that there shouldn't be a differance between 3rd and OD for downshifting to first, but for some reason there is with my trans. Sometimes I think there is something wrong with it that causes this issue. But, if there was actually something wrong with the trans, I would think that it'd be slow to downshift from 3rd to 1st as well. I'm not a trans "expert", but I can't see what within the trans would be different about going back to first whether in 3rd or OD. Also, downshifts to any other gear (from 3rd or OD) are fine and are the same between the two.

Basically, if I'm going say 30mph and hit it in OD, the car will downshift to 2nd, then about a second later go back to 1st. BUT, if I hit it at 30mph in 3rd, it will instantly go back to 1st like it should...zero delay. I just don't understand why this happens <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> Fluid temps have no bearing on this issue either.

Now, if I hit it at 70mph, whether I'm in 3rd or OD does not matter, it instantly goes back to 2bd just as it should.

I have no other issues with this tranny, it upshifts perfectly every time, it's always consistant with shift points.\

Now, the trans is vacuum modulated, but as I understand this should produce quicker downshifts. And, it does in fact downshift quicker than stock in every case except going from OD to 1st <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />

Sorry this is so long, but this issue has had me perplexed for almost a year now. Maybe someone can shed some light...

Chris99WS6PWTMET

Whats up Ryan! I dont know the specific 'why's' to your questions but after 13 years of running with A4's I NEVER romp on it (for race purposes) in OD. At the track I'm always in 3rd, and if I roll up at a light for a race on the street I always drop it into 3rd. If I'm about to roll race on the highway I'll drop it into 3rd or 2nd, depending on the roll MPH, prior to going WOT. Both my stock and built 700R4's and 4L60E's had bad lag anytime you punched them from OD. I was told a long time ago from Art Carr's tech department that romping on it in OD was rough on the tranny. I dont remember their reasoning. I guess racing in 3rd is just ingrained in me now, besides the car feels quicker that way!! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

<small>[ February 23, 2003, 10:58 AM: Message edited by: Chris99WS6PWTMET ]</small>

CAT3

iTrader: (9)

Ryan & Chris, I researched a little on this subject here and other LS1 boards. I was having an issue of hitting the rev-limiter tweent the 2-3 shifts at the track on spray and seldom off spray. I found recomendations to try it in OD rather than D, I have tried it and will not go back to using D NEmore. The difference is in the computer, you may be able to program using LS1 Edit, but unsure. I do know that in my case the OD does not allow the car to hit the RL NEmore and equates to better qtr mile runs all around, from short times, 1/8th & 1/4 mph and ET. If I remember right, either Colonel or PSJ had the recommendation and it works, based off from line pressure and all that **** programmed into the computer for the two different selections. Good-luck and hope this offers some input. Charlie.

RPM WS6

iTrader: (3)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by CAT3:
<strong> based off from line pressure and all that **** programmed into the computer for the two different selections. Good-luck and hope this offers some input. Charlie. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks for the input. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

This part right here caught my eye. As my particular trans is vacuum modulated, my computer does not determine WOT line pressure. It is now based on vacuum. I wonder if that is why I'm having better luck using 3rd than you did? Maybe that's part of the reason my builder told me to use 3rd instead?

Chris99WS6PWTMET

Mine is also vacuum modulated (as were my 700R4's). As long as it's holding together I'm happy!!

As far as the car goes Ryan, I'm quite happy with it. I ran an 11.95 @ 113 (1.66 60') last month at Gainesville. I finally hit the 11's NA (although barely) so now I'm working up the plans for a custom single turbo. Shooting for a July build/install. Wanted something to give my little A4 more MPH!!! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

RPM WS6

iTrader: (3)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Chris99WS6PWTMET:
<strong> Mine is also vacuum modulated (as were my 700R4's). As long as it's holding together I'm happy!!

As far as the car goes Ryan, I'm quite happy with it. I ran an 11.95 @ 113 (1.66 60') last month at Gainesville. I finally hit the 11's NA (although barely) so now I'm working up the plans for a custom single turbo. Shooting for a July build/install. Wanted something to give my little A4 more MPH!!! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Sounds good Chris! That turbo build-up will give your WS6 a whole new personality <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> I hope you like having sick amounts of power at the immediate access of your right foot <img border="0" alt="[burn out]" title="" src="graemlins/gr_burnout.gif" />

RPM WS6

iTrader: (3)

Good to hear from you Chris! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> How's your car BTW?

Anyway, I, like you, already make it a point to always use 3rd for WOT driving as I was told by my builder. I guess I'm just wondering if anyone can explain why this is recommended, and whether or not my downshifting from OD issue is actually a problem with my trans or something that just is the way it is, perhaps just due to valvebody calibrations (possibily set up this way to actually ease the blow to the tranny if WOT is seen in OD?). I would imagine that the more gears you're dropping, the harder it probably is on the trans, and OD to 1st is the biggest drop. That's the only reasoning I can come up with for my issue. But, as I make it a point to use 3rd anyway (and 3rd downshifts to 1st blazingly quick), I guess I should just ignore the issue. I would just like to be sure that this isn't a sign of something being wrong. I'm guessing it's not though, it's been doing this since day 1 with this trans, and after a year it hasn't effected anything else...

Turk01SS

I have noticed 2 problems with racing in 3rd. I tend to pop the rev limiter on 2-3 shift just before the shift. Also at a 65-70 highway punch it seems like I get a little more umph in 2nd after the downshift if I leave in 4th. If I leave it in 3rd it almost feels like I just rap right out of 2nd instantly and into 3rd. Its hard to explain. I get about 2-3 seconds of pull in 2nd going from 4. I get about .5-1 second of pull in 2nd going from 3. The second gear pull is everything on the highway. If yer racing a stick the hesitation from the shift can ruin yer chances. I feel the 4 to 2 shift hits harder. Why I don't know. But I've tested this theory several times trying to figure out why. And everytime I get a better launch from 4to2.

However, I do feel the shifts come later on a 0 launch from 3rd than 4th. But like I said, I have hit the rev limiter a few times doing this.

RPM WS6

iTrader: (3)

Interesting that some seem to have the oppsite experiances as me with my transmission.

I've heard of others complaining of hitting the limiter in 3rd, but that has never been an issue for me.

Anyone else have some input on this?

Raughammer

3rd.... you dont want to be shifting to 4th at WOT...not good... not good at all.

Those OD clutches are WWEEEEEeeaaaaaaaakkkkk....

2000WhiteZ28

OD for me. I didn't get any better time driving in D.

I assume Camaro is 1, 2, D, OD
and a firebird is 1, 2, 3, OD?

RPM WS6

iTrader: (3)

Any more thoughts on this?

jerflash

i know with my 89 i just shift it manually
but i also have a probuilt tranny i would not recommend this for non modded trannies

just leave it in 3rd

jerflash

i know with my 89 i just shift it manually
but i also have a probuilt tranny i would not recommend this for non modded trannies

just leave it in 3rd

Modsquad

iTrader: (6)

Holy mother of signatures

SAINT WS6

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Modsquad:
<strong> Holy mother of signatures </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">my thought exactly