LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Problem at the Strip

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Old Nov 18, 2006 | 11:36 AM
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Default Problem at the Strip

Here is my setup- 95 Z28, A4, 2.73's, CAI, Catback, LCA's, PHB

When i went to the track to run it, I staged put the car in drive. After i launched and got to 3rd gear the rev limiter kicked in. I ran a 14.3. Should I be running out of gear with 2.73's in third gear??? The next past I put it in OD for the hell of it. At the top end the car went into to OD before trapping. That pass was a 14.1 at 98mph. I had a 2.0 60ft Is this normal for me to run out of gear in third like that?

Thanks
Bryan
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Old Nov 18, 2006 | 12:45 PM
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Well using this gear calculator and aSSuming you have stock tires, you may be shifting out of 2nd and into 3rd, not fourth...

http://www.f-body.org/gears/

I dunno what to tell ya, but thay may help
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Old Nov 18, 2006 | 06:15 PM
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Why do you switch between the gear selections? Doesnt your car just have 1, 2, 3, D? Just leave it in drive n go.
But with a 2.73 rear gear i dont think you should be running out of gear. I know with a 3.23 rear gear 80 is top of 2nd and 100 is mid 3rd somewhere.
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Old Nov 18, 2006 | 06:45 PM
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The PCM can shift your A4 better then you can manually, RedsTA is right, just put it in drive and go. Also, look into getting a shift kit, it will frim up your shifts and lower you times.
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Old Nov 18, 2006 | 07:04 PM
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You also get more pressure to the 3-4 clutches leaving it in OD(or manually shifting) than you do in leaving it in D. If I had to guess from my computer desk I would say 3-4 clutch pack on the way out which is the most common failure for this tranny. In the future leave it in OD and let it do the shifting.
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Old Nov 19, 2006 | 02:08 AM
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I did put it in drive the first time. The overdrive the second time. I DID NOT manually shift it at all. 3rd gear is drive.
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Old Nov 19, 2006 | 02:28 AM
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umm... a 2.73 car can only choose 2,3, and OD... least that is what i thought... ?
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Old Nov 19, 2006 | 02:29 AM
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Originally Posted by Dragframe
umm... a 2.73 car can only choose 2,3, and OD... least that is what i thought... ?
Theres an easy way around that
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Old Nov 19, 2006 | 02:36 AM
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So what track did you go to? Byron?

I was pretty sure they closed down last weekend?
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Old Nov 19, 2006 | 02:45 AM
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It was a few weeks ago. Yes it was Byron
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Old Nov 19, 2006 | 07:19 AM
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What were your trap speeds?
IIRC, the selection of first gear depends on the year, although I removed the plastic tab and I can get first gear, even though the console does not have the number on it.
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Old Nov 19, 2006 | 09:00 AM
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If the car came with 3.23 you could select 1st gear. I trapped at 98mph
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Old Nov 19, 2006 | 09:45 AM
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Originally Posted by UA-Plumber
If the car came with 3.23 you could select 1st gear. I trapped at 98mph
While I understand your answer, I suspect that the selection of first gear was year dependent. I was unable to find a console plate that would allow me to show first gear. I reserve the option to be incorrect.
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Old Nov 19, 2006 | 09:49 AM
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Originally Posted by koolaid_kid
While I understand your answer, I suspect that the selection of first gear was year dependent. I was unable to find a console plate that would allow me to show first gear. I reserve the option to be incorrect.
I could be incorrect as well. Ive just heard that a few different times.
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Old Nov 19, 2006 | 09:51 AM
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OTOH, it is kind of kool to be able to shift down to first when no one knows that I have it available.
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Old Nov 19, 2006 | 03:09 PM
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My 97 WS6 had a 4L60E tranny with 3.23 rear gears. My shift selector console was set up as P,R,D,3,2,1. My car would come out of 3rd at 120 mph.
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