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

700R4 speedo

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Old Jan 15, 2013 | 04:24 PM
  #1  
rkg8554's Avatar
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From: Dearborn Hgths Mich
Car: 87 Iroc Z 28
Engine: 355/ 600 Holly
Transmission: 700R4 shift kit & vette servo
Axle/Gears: 9 bolt 3;70s
700R4 speedo

I have gone thru about 8 page's of post and do not see my ? anywhere. What I want to know is, I am replaceing the trans (700R4) in my 87 Camaro. The trans I have now uses a cable driven speedo, the trans I am installing (700R4) has the electronic speedo. Can I swap out the speedo gears from my 87 trans to the 92 trans to keep my cable driven speedo or do I have to change my speedo and add the wire's for it.
Thanks
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Old Jan 15, 2013 | 04:25 PM
  #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: 700R4 speedo

Take the gears and housing out of your old transmission and put them in the new one.
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Old Jan 15, 2013 | 05:11 PM
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rkg8554's Avatar
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From: Dearborn Hgths Mich
Car: 87 Iroc Z 28
Engine: 355/ 600 Holly
Transmission: 700R4 shift kit & vette servo
Axle/Gears: 9 bolt 3;70s
Re: 700R4 speedo

Thanks,Do you know if this require's any specialty tools.
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Old Jan 15, 2013 | 06:37 PM
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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: 700R4 speedo

If your new trans. has a traditional spiral cut speedo gear (and not a straight cut reluctor ring) it takes:
1 bolt for the VSS
4 bolts for the tailhousing
1 clip for the speedo gear clip (if different than the new trans.)
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Old Jan 17, 2013 | 04:47 AM
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Re: 700R4 speedo

Actually, about 99% of the time, the gear on the output shaft of the trans is the same for both the electric and cable-driven speedos, so all you have to do is loosen up the one 10mm bolt that holds the electric sending unit in the tailshaft housing and just replace it with your cable-driven gear/housing. No need to remove the tailshaft housing at all.
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Old Jan 17, 2013 | 07:30 AM
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From: Dearborn Hgths Mich
Car: 87 Iroc Z 28
Engine: 355/ 600 Holly
Transmission: 700R4 shift kit & vette servo
Axle/Gears: 9 bolt 3;70s
Re: 700R4 speedo

Originally Posted by Pat Hall
Actually, about 99% of the time, the gear on the output shaft of the trans is the same for both the electric and cable-driven speedos, so all you have to do is loosen up the one 10mm bolt that holds the electric sending unit in the tailshaft housing and just replace it with your cable-driven gear/housing. No need to remove the tailshaft housing at all.
Thanks all, I will be pulling motor and trans today befor the artic air hits.
I will give this a try in the next couple days. THANKS AGAIN
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