C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Im in the 12's!!!

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Old Oct 26, 2002 | 06:16 PM
  #1  
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Default Im in the 12's!!!

Well I went to the track on friday and I ran a best et of 12.91!! To top this off this was on my mich pilot series tires! I had a 60 ft time of 1.79 on that run, but I had a best 60 ft of 1.77. It seems the converter is helping me by about .25 seconds. I never tried my drag radials due to us having break downs with a chevelle we brought to the track as well. I just didnt want to push it to hard and break a differntial. I hope I dont get in trouble for posting this in the drag section as well but I just wanted to tell everyone on here as well!!
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Old Oct 26, 2002 | 06:28 PM
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Default Re: Im in the 12's!!! (Red 86 4+3)

what all have you done to your car to get it down to that time? looks pretty stock by the sig.
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Old Oct 26, 2002 | 06:31 PM
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Default Re: Im in the 12's!!! (gtsyellow)

everything is in my sig. But note it is a 93. I used to have a 86, which is where my screen name came from.

I edited this to add that I still have the factory exhaust as well.


[Modified by Red 86 4+3, 4:38 PM 10/26/2002]
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Old Oct 26, 2002 | 06:32 PM
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Default Re: Im in the 12's!!! (Red 86 4+3)

:cool: :cheers:
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Old Oct 26, 2002 | 06:47 PM
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Default Re: Im in the 12's!!! (Red 86 4+3)

you did all that with a converter and gears !! damn, very impressive !!
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Old Oct 26, 2002 | 07:36 PM
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Default Re: Im in the 12's!!! (gtsyellow)

hey thanks!! But I sure dont want to talk about RT. You would think I was asleep on some of them. They were all over the scale!!
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Old Oct 26, 2002 | 07:53 PM
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Default Re: Im in the 12's!!! (Red 86 4+3)

congratulatons! LT1s are strong runners right from the factory, usually you can get mid-low 13s right out of the box. it only takes a few things to push them into the 12s.

hopefully ill be joining you soon!
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Old Oct 26, 2002 | 09:19 PM
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Default Re: Im in the 12's!!! (tpivette89)

Nice to bust into the 12's eh?? Bet it feels good.
:)
Also,if you some of you didnt know, MackeyRed and JPanuzzo(sp?) on the C4 forum they were running mid 12's with a stock LT1 motor with 3.73 gears and vigilante converters.
Of course theyre very experienced drivers as well but they got those cars moving fast without ever even removing the valve covers.
Thats another testimony to show how good the LT1 can run down the track. Match the drivetrain to go and youre set to practice better and better times.
:)
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Old Oct 27, 2002 | 12:03 AM
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Default Re: Im in the 12's!!! (Bill's86Coupe)

Congrats on your first trip into the 12s :cheers:

Dave
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Old Oct 27, 2002 | 04:15 AM
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Default Re: Im in the 12's!!! (Red 86 4+3)

Congrats on breaking that barrier :cheers:; very nice short time on streets.

Did you launch off idle or close to stall speed?

If you're still running a D36 it's indeed a good idea to stick with streets.
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Old Oct 27, 2002 | 04:57 AM
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Default Re: Im in the 12's!!! (65Z01)

[QUOTE

Did you launch off idle or close to stall speed?

If you're still running a D36 it's indeed a good idea to stick with streets.
[/QUOTE]

I drove around the water, and would then hold the brake do a short stab of the throttle to spin for about 1 second, then pull up to the line. Starting off of idle I was getting in the low 1.80's. I then started leaving at about 1200 rpms and got the high 1.70's. I dont have a line loc yet, so I didnt try the nittos yet and also I am paranoid of breaking the dana 36. This was a private track rental by the eastern f-body assoc. and there was a maxium of 16 cars allowed. Well it was myself and my wife, A friend with a stone stock 94 vette and his wife, and a friend with a 67 chevelle 396 and a 4 speed. We had problems with the chevelle, IE: heater core went out, altranator went out so we had to work on it at the track. But still my vette went down the track 34 times. I do worry about the dana 36, and I think im going to start looking for a 44 over the winter.
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Old Oct 27, 2002 | 05:17 AM
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Default Re: Im in the 12's!!! (Red 86 4+3)

My Drag2000 drag strip simulation software predicted that I could improve my ET by launching close to the TC's stall, and it proved to be right.

I initially had been launching my new 2,000RPM TC off idle, the same as with the stock 1,500rpm TC and getting mid 1.9s short times. After I took the launch up to 1,800rpm I pulled 1.83sec short time and the best ET to date. Of course, since I too am running on street tires I had to carefully select the stickey track in which to launch.

I think if you can get a sticky track (necessary with street tires) you can get even better short times by lauching closer to stall; and stage as shallow as possible (just inch up to light the staging bulb) to get every bit of rollout. Bringing up your launch RPM not only saves on the time to spool up the TC but it also preloads the chassis so your car leaps out quicker (it doesn't have to load up before it can move forward).

And by preloading your chassis I think you will reduce the shock to the drive train as it will already be loaded. Since you're going to a D44 this winter anyway, you might want to try these things near the end of this season. Even as I'm pushing toward low 1.8s I'm concerned about my D36 and the half-shafts too.
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Old Oct 27, 2002 | 06:47 PM
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Default Re: Im in the 12's!!! (65Z01)

the half shafts hold it's the U-joints that break, it takes more power than we have to break the half shafts. i've heard stories about a very aggressivly driven 415ci LT5 that sheared one in half but again, that's a little more than we're all putting down :D
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