Transmissions and Drivetrain Need help with your trans? Problems with your axle?

which gears

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Old Jul 25, 2003 | 10:56 PM
  #1  
82z28man's Avatar
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From: Marine City, MI
Car: 91 Z28
Engine: 6.0 LSX Single turbo
Transmission: 4l80E
Axle/Gears: Moser 9" 3.55
which gears

I have a 3.23 gear in my car now.I kinda want to go higher cuz i think its holding me back on getting the full potential out of my car now.I was thinking about either a 3.42 or a 3.73.My car has pretty good bottom end now but i want more.I also have to keep in mind about my transmission not having overdrive. This car is also my daily driver on nice days.well any ways, thanks for ur help.
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Old Jul 26, 2003 | 05:31 AM
  #2  
ede's Avatar
ede
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From: Jackson County
did you ask a question? if so i missed it.
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Old Jul 26, 2003 | 04:27 PM
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gears

hi i'm new here .go with 342's if u have an auto 373's if it's manual.
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Old Jul 26, 2003 | 09:36 PM
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From: Marine City, MI
Car: 91 Z28
Engine: 6.0 LSX Single turbo
Transmission: 4l80E
Axle/Gears: Moser 9" 3.55
Sorry about that, the question was that should i either keep the 3.23 i have in it or go to a 3.42 or 3.73.
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Old Jul 27, 2003 | 08:22 PM
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25THRSS's Avatar
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From: Glen Allen, VA
where do you make peak power and what rpm do you cross the traps at?
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Old Jul 27, 2003 | 11:25 PM
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From: Marine City, MI
Car: 91 Z28
Engine: 6.0 LSX Single turbo
Transmission: 4l80E
Axle/Gears: Moser 9" 3.55
Well i havent really paid that much attention to what it peaks at but i would say at about 4500 to 5000.Thats just a rough estimate.I havent taken it to the track yet so i dont know what it traps at.
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Old Aug 2, 2003 | 10:30 PM
  #7  
82z28man's Avatar
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From: Marine City, MI
Car: 91 Z28
Engine: 6.0 LSX Single turbo
Transmission: 4l80E
Axle/Gears: Moser 9" 3.55
Any more input?
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Old Aug 3, 2003 | 12:33 PM
  #8  
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From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
dolemite

You actually have it backwards. You want 3.73's with the auto and 3.42's with the T-5. It has been proven that T-5 cars run quicker with the 3.42's. Either of those gears will yield you nice results. 3.42's are a great street gear for auto's and manual alike. 3.42's wont shift your powerband to high and should retain all of your low end.
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