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

speedo reading wrong

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Old Sep 24, 2011 | 06:09 AM
  #1  
bbsr72's Avatar
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From: newcomerstown,o
Car: 91 formula
Engine: 350 tpi
Transmission: auto
Axle/Gears: poss
speedo reading wrong

it has to be off. im passing everything on highway when im doing 60mph. my buddy followed me home the other day and ask how fast i was going i said 80 he said no way cuz he was doing 80. awhile back i noticed tranny fluid dripping so when i crawled under car the sensor? at the back of the tranny somehow came loose so i messed with it until it went back into tranny smoothly. was there a certian way i was supposed to but it back in?
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Old Sep 24, 2011 | 08:19 AM
  #2  
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: speedo reading wrong

As long as it goes in, it's good.

Have you changed your tire size, transmission, or rear end?
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Old Sep 24, 2011 | 08:52 AM
  #3  
bbsr72's Avatar
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From: newcomerstown,o
Car: 91 formula
Engine: 350 tpi
Transmission: auto
Axle/Gears: poss
Re: speedo reading wrong

no havent changed anything.
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Old Sep 24, 2011 | 08:57 AM
  #4  
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: speedo reading wrong

Have any previous owners changed any of that?
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Old Sep 24, 2011 | 11:49 AM
  #5  
jmd's Avatar
jmd
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From: Aridzona
Car: `86 SS / `87 SS
Engine: L69 w/ TPI on top / 305 4bbl
Transmission: `95 T56 \ `88 200-4R
Re: speedo reading wrong

Don't count the ring and pinion teeth or the speedo gear teeth.
That won't do any good.
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Old Sep 26, 2011 | 02:06 PM
  #6  
bbsr72's Avatar
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From: newcomerstown,o
Car: 91 formula
Engine: 350 tpi
Transmission: auto
Axle/Gears: poss
Re: speedo reading wrong

this old pos 91 isnt doing 135 mph no way. something wrong.
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Old Sep 26, 2011 | 06:44 PM
  #7  
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jmd
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From: Aridzona
Car: `86 SS / `87 SS
Engine: L69 w/ TPI on top / 305 4bbl
Transmission: `95 T56 \ `88 200-4R
Re: speedo reading wrong

Hopefully you took my last post as sarcasm and have bothered to do one or the other.

I always thought short of having a speed limiter, an L98 was capable of 135mph.
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Old Sep 28, 2011 | 04:20 AM
  #8  
bbsr72's Avatar
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Joined: Feb 2006
Posts: 682
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From: newcomerstown,o
Car: 91 formula
Engine: 350 tpi
Transmission: auto
Axle/Gears: poss
Re: speedo reading wrong

well, i know where a statey is always parked. he will tell me how fast im going.
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