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shifting my auto manually?

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Old Sep 22, 2005 | 01:20 AM
  #1  
mickman's Avatar
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Joined: May 2003
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Car: 1991 Z28
Engine: 5.7L LT1
Transmission: 4L60
shifting my auto manually?

First off my car has no traction, my tires are terrible for drag racing. I'm getting BFG's soon asIget $. Anyways I went playin around trying to get a good launch on these crappy tires. So I tried shifting manually and had decent success I think. I brake torqued it up to about a grand in1and rolled into it and grabbed pretty good shifted at 6000 and from 2-3rd at 5500 and it seemed like the fastest 0-60 mph I've experienced in a while. It just seemed way faster. I don't know if this makes sense but I have a 93 LT1 and you can manually adjust the shifting points of the tranny. The way my mechanic has it set right now 1 seems very brief, I don't know if thats a good thing or not? But by shifting manually it seems I made it deeper, second was really quik and I seemed instantly in third. I don't really know if this is better but it sure seems like it. Maybe I just felt more one with the machine like a gear head I don't know, what do you guysa think?
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Old Sep 22, 2005 | 09:47 PM
  #2  
phoenix305's Avatar
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Joined: Mar 2004
Posts: 948
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From: Clearfield,Utah
Car: 1987 IROC, 1989 IROC
Engine: built 305, stock 305 tpi
Transmission: Corvette 700r4, t-5
Axle/Gears: 4.10 posi, 3.08 posi
Well if your tranny is short shifting then yeah it would help out alot.
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Old Sep 22, 2005 | 11:11 PM
  #3  
mickman's Avatar
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Car: 1991 Z28
Engine: 5.7L LT1
Transmission: 4L60
if I leave it in D it shifts at 5500rpm like its suppose to but first just seems very brief. I guess I won't know until I get BFG's and can really put the hammer down off the line. Then I'll see what it'll do off the line the way it is. I don't know how these adjustments effect the performance of the vehicle?
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