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

speed/RPM question

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Old Oct 14, 2005 | 06:35 PM
  #1  
unklechuckles19's Avatar
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Joined: May 2005
Posts: 329
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From: Stroudsburg PA
Car: 1987 Z-28
Engine: 355
Transmission: T-5
Axle/Gears: 10 Bolt/3.23 peg leg :(
speed/RPM question

just wondering....my speedo doesnt work right now (cant afford the dakota digital box yet) and im wondering if you guys could enlighten me with some of your experiences. Ive got the T-5, and 3.23 gears, was wondering what RPM you guys are running on the highway between 65-75 miles an hour? If i recall correctly its somewhere between 2000 and 2300 but i only had it a short time before the new T-5 got swapped in.
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Old Oct 15, 2005 | 10:54 AM
  #2  
dankhound's Avatar
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Joined: Jan 2002
Posts: 1,322
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From: Bloomingdale,IL
Car: 91 RS
Engine: 305 Tbi (L03)
Transmission: 700r4
www.thirdgen.org/newdesign/tech/calculations.shtml

You should be able to calculate all the speeds vs tach and gear here.
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