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Speedometer for TH350

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Old Oct 5, 2008 | 10:22 PM
  #1  
AlabamaGuy's Avatar
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Car: 1991 Camaro RS
Engine: 454
Axle/Gears: 2.73 open
Speedometer for TH350

I bought a car that already had a TH350 swapped into it (91 RS). How can I get my speedometer to work?
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Old Oct 8, 2008 | 04:05 PM
  #2  
DAVEY420's Avatar
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From: Trevose,PA
Car: 85 IROC Z
Engine: 350 TPI
Transmission: TCI TH350 TCI 2400 STALL
Axle/Gears: 3.42 WORN OUT POSI
Re: Speedometer for TH350

Let me know if you ever figure it out. I swapped one in 6 mths ago and haven't had a speedo since.
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Old Oct 13, 2008 | 07:33 PM
  #3  
bluechev's Avatar
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Re: Speedometer for TH350

i believe if you call tci they will tell you what gears to put in the tailhousing depending on what gear ratio and tires size you have
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Old Oct 14, 2008 | 07:44 PM
  #4  
AlabamaGuy's Avatar
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Car: 1991 Camaro RS
Engine: 454
Axle/Gears: 2.73 open
Re: Speedometer for TH350

Originally Posted by bluechev
i believe if you call tci they will tell you what gears to put in the tailhousing depending on what gear ratio and tires size you have
Where would I buy the gears?
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Old Oct 14, 2008 | 08:38 PM
  #5  
86camaro383's Avatar
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From: NY
Car: 86 Iroc
Engine: 383
Transmission: TH350
Axle/Gears: 3:73s!
Re: Speedometer for TH350

Are the 91's cable speedo's? When i put the TH350 in my car, my speedo cable screwed right on to the housing...
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Old Oct 14, 2008 | 08:54 PM
  #6  
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From: Virginia
Car: 1992 Firebird
Engine: 350TBI
Transmission: 700r4
Axle/Gears: Ford 9in 4.10
Re: Speedometer for TH350

Originally Posted by 86camaro383
Are the 91's cable speedo's? When i put the TH350 in my car, my speedo cable screwed right on to the housing...
91-92 or maybe 90-92 is electronic
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Old Oct 14, 2008 | 10:09 PM
  #7  
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From: NE Ohio
Car: 82 Z28
Engine: TT LS
Transmission: 4L80E
Axle/Gears: S60 3.54's
Re: Speedometer for TH350

If it's a cable driven speedo, just hook it back up. Could probably swap in the plastic gears from the old trans. If it's electric, they make things that use the gears and output an electronic signal.
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Old Oct 14, 2008 | 10:11 PM
  #8  
AlabamaGuy's Avatar
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Car: 1991 Camaro RS
Engine: 454
Axle/Gears: 2.73 open
Re: Speedometer for TH350

Originally Posted by Timothayyy
91-92 or maybe 90-92 is electronic
SO then, will I need an aftermarket cable driven speedometer? Should I just start looking to custom make a cluster? Or can you run am electronic speedo to a TH350? I was wanting to do an all digital dash but the TH350 may make that impossible.
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Old Oct 14, 2008 | 10:20 PM
  #9  
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From: Virginia
Car: 1992 Firebird
Engine: 350TBI
Transmission: 700r4
Axle/Gears: Ford 9in 4.10
Re: Speedometer for TH350

Originally Posted by AlabamaGuy
SO then, will I need an aftermarket cable driven speedometer? Should I just start looking to custom make a cluster? Or can you run am electronic speedo to a TH350? I was wanting to do an all digital dash but the TH350 may make that impossible.
What fast82z said, they sell adapters to convert it
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