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 Post subject: Shifting while wot
PostPosted: Mon Oct 28, 2013 12:46 am 
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Location: Sioux Falls, South Dakota
Year and Trim: 2001 Pontiac Bonneville SE
This might be a stupid question. While the pedal is to the floor, do you guys have the transmission in Drive, or is it better to start in 1 and shift through to D? I have shaved off some seconds shifting through the gears compared to being in drive. Yet im worried that the transmission cant handle it. It has been rebuilt once.

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 Post subject: Re: Shifting while wot
PostPosted: Mon Oct 28, 2013 1:12 am 
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It's the same force whether you do it or you let the computer shift it, and the computer reacts a lot faster than you do. The clutches and hard parts are the same as what's in an S/C car, the only real difference is the differential. It can take it.

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 Post subject: Re: Shifting while wot
PostPosted: Mon Oct 28, 2013 7:29 am 
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The big concern is the engine. In stock form it may short shift a bit, but not much. If you are shaving seconds, i have to question the rpms you are turning. In stock form, there is not much gain at redline, and the valvetrain is usually the weakest point

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 Post subject: Re: Shifting while wot
PostPosted: Mon Oct 28, 2013 7:30 am 
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Btw, shiftpoints can be adjusted with a tune, if you really want to fiddle with things

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 Post subject: Re: Shifting while wot
PostPosted: Mon Oct 28, 2013 8:34 am 
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I would leave it in D if you are doing pulls. The other gears could be used if you wanted to force a downshift, or maybe for autocross to hold a gear. If you do shift it yourself, be careful and watch the revs. I over revved my last car doing that and killed the engine.

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 Post subject: Re: Shifting while wot
PostPosted: Mon Oct 28, 2013 9:16 am 
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Year and Trim: 2003 SSEi.

LOTS of Mods
Shifting the trans manually will actually be slower than the computer. Also there are Other things that happen when the trans is put in Manual 1 and 2 vs 3 and Drive.

The only time I have the car in Manual 1 or 2 is to do a burnout in the water box at the track,

I will pull the car down into 3 if im on the highway and want to do a WOT pull


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 Post subject: Re: Shifting while wot
PostPosted: Mon Oct 28, 2013 9:46 am 
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Any time I've ever timed my car, I've gotten the quickest results in 3 vs. manual shifting or leaving it in D.

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 Post subject: Re: Shifting while wot
PostPosted: Wed Oct 30, 2013 12:13 am 
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Location: Sioux Falls, South Dakota
Year and Trim: 2001 Pontiac Bonneville SE
thanks for the input guys. that clarified some questions I had.

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 Post subject: Re: Shifting while wot
PostPosted: Wed Oct 30, 2013 11:18 am 
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Just leave it in drive.

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 Post subject: Re: Shifting while wot
PostPosted: Wed Oct 30, 2013 2:01 pm 
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Location: Sioux Falls, South Dakota
Year and Trim: 2001 Pontiac Bonneville SE
That's my conclusion

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more to come!!


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