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Drag Strip: Question for the automatic guys.

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Old 02-03-2003, 07:41 PM
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Corey_68
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Default Drag Strip: Question for the automatic guys.

When you launch do you launch in "D" and let the tranny shift itself? When I meet a challenger at a red light I put it in "2" and launch and when it winds out I throw it in "D". I was told to just leave it in "D". But I find it's quicker if I start off in "2" because it downshifts to "1" instead of starting in "D' and only downshifting to "2".

The car just feels faster and pulls harder if I start in "2".

The setup is a 383 w/ SR, 2500 stall, beefed up tranny and 3.08 gears (3.75's going in Friday)

What have you seen??
Old 02-03-2003, 07:42 PM
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Mr Mojo
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Default Re: Drag Strip: Question for the automatic guys. (Corey 68)

I leave mine in "D" because if I do anything else, it won't shift quick enough.

Of course, there could be something wrong with my car also, but as long as it's in "D" no problems.

At the very least, I get consistency.
Old 02-03-2003, 07:50 PM
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El Guapo
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Default Re: Drag Strip: Question for the automatic guys. (Corey 68)

I've only been to the strip once and I tried a bunch of different ways to laungh and my times were all over the place. I also forgot to turn of ASR most of the time. The fastest time I had though was when I had ASR off and started in D.
Old 02-03-2003, 08:09 PM
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cprgmr
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Default Re: Drag Strip: Question for the automatic guys. (Corey 68)

I leave the ASR off and launch in 'D' :)
Old 02-03-2003, 08:16 PM
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CaneinBatonRouge
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Default Re: Drag Strip: Question for the automatic guys. (Corey 68)

I leave mine in D. :cheers: You coming to No Problem Sunday?
Old 02-03-2003, 08:21 PM
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Corey_68
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Default Re: Drag Strip: Question for the automatic guys. (CaneinBatonRouge)

I'm going with my buddy in his '86 coupe (the car in question). I built the motor for him and trying to gain a few tenths and was curious what everyone does for their launch

Look for a '86 (with '96 kit) black C4 with a grand sport stripe.

:cheers:
Old 02-03-2003, 08:30 PM
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1320dance
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Default Re: Drag Strip: Question for the automatic guys. (Corey 68)

drive works best for my car 13.17 @ 104mph [96vette] :U
Old 02-03-2003, 08:41 PM
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HeeHaw89
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Default Re: Drag Strip: Question for the automatic guys. (1320dance)

My problem is that as soon as I launch my tires spin and it immediately shifts into second from spinning so fast.
Old 02-03-2003, 09:17 PM
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Default Re: Drag Strip: Question for the automatic guys. (Corey 68)

The position of the shifter shouldn't affect the launch. Unless you have a manual valve body, the car should leave the line in first gear. The selector position MAY affect the upshift speeds or rpms, but not the launch or 60' times. If you are spinning so badly for the trans to select 2nd gear too soon, you need to adjust your starting line proceedure (or get tires) to get traction. Good luck, and...

RACE ON!!!
Old 02-03-2003, 09:23 PM
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MagikDraggin
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Default Re: Drag Strip: Question for the automatic guys. (Corey 68)

________________________________________ ________________
Quote:
I was told to just leave it in "D". But I find it's quicker if I start off in "2" because it downshifts to "1" instead of starting in "D' and only downshifting to "2".
The car just feels faster and pulls harder if I start in "2".
________________________________________ ________________

What? What am I missing here?

I thought the transmission always starts off from a dead stop in 1 (1st gear). A lot of cars (maybe not Corvettes) take off in 2 (second gear) when you have the selector in the #2 position, to give better traction in snow and mud. Why would you what to do that in a drag race?

I always leave the line with the ASR off and the tranny in 1, when I am being serious about accelerating quickly and slip it up to 2 around 4500 rpm. Otherwise, I simply leave it in D, where it takes off in first gear, and shifts normally (unless as you said, spinning becomes a problem off the line and then it will shift up to second gear prematurely).

Karl

Old 02-03-2003, 09:35 PM
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95AquaC4
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Default Re: Drag Strip: Question for the automatic guys. (Corey 68)

Launch in D also. ASR off! :yesnod:
Old 02-03-2003, 09:37 PM
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Default Re: Drag Strip: Question for the automatic guys. (Mr Mojo)

I leave mine in "D" because if I do anything else, it won't shift quick enough.

Of course, there could be something wrong with my car also, but as long as it's in "D" no problems.

At the very least, I get consistency.
:lol: :lol: :lol: I'm sorry Frank, this response struck me funny!!!
Old 02-03-2003, 09:47 PM
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mackeyred96
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Default Re: Drag Strip: Question for the automatic guys. (Corey 68)

"D"
Old 02-03-2003, 10:18 PM
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NoWorries
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Default Re: Drag Strip: Question for the automatic guys. (Corey 68)

My governor is FUBAR, so I launch in 1, the car automatically shifts into 2nd, then I shift into D, the car doesn't even get close to the redline in 3rd with my 2.59's to need OD.

I need to fix my governor, as the 700R4 has a safety, which I guess is cannot be bypassed, the car cannot be held in 1st gear, 1st is always automatic.

But the car will start in 2nd gear if you have the indicator on 2.


[Modified by NoWorries, 3:07 PM 2/4/2003]
Old 02-03-2003, 11:27 PM
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Vette Ed
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Default Re: Drag Strip: Question for the automatic guys. (Corey 68)

ASR - Off set in "D" pedal to the floor :D
Old 02-03-2003, 11:35 PM
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Default Re: Drag Strip: Question for the automatic guys. (Vette Ed)

launch in 1st and about 5400 rpm push it into 2nd then at 5300 rpm push into 3rd and thats about it :cheers:
Old 02-04-2003, 06:54 AM
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Eric94
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Default Re: Drag Strip: Question for the automatic guys. (cprgmr)

I leave the ASR off and launch in 'D' :)
:iagree: I've always gotten the best times this way!

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Old 02-04-2003, 10:26 AM
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65Z01
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Default Re: Drag Strip: Question for the automatic guys. (Corey 68)

I launch in "D" and roll into the throttle to minimize/avoid wheel spin stock street tires.

A stock 700R/4 will start in "1" with the shifter in any fwd position.

On some Vettes the shifter boot gets bunched up and won't let you actually put the shifter in true "1" position. You may be able to overcome this by removing the boot and repositioning it slightly.
Old 02-04-2003, 10:54 AM
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Phil-tha-Rush
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Default Re: Drag Strip: Question for the automatic guys. (65Z01)

"D" for me


[Modified by Phil-tha-Rush, 9:55 AM 2/4/2003]
Old 02-04-2003, 11:18 AM
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krivera
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Default Re: Drag Strip: Question for the automatic guys. (Corey 68)

i leave it in D but i stall it a little to like 1000rpm and that is where i get 13.2 at 1 mile high i wish i was at sea level :(


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