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

speedo off,need right speedo gear

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Old Sep 11, 2000 | 07:43 PM
  #1  
IROCZ4BD3's Avatar
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From: Oaks,Pa
Car: 89 IROC
Engine: 350 HSR
Transmission: modified 700R4
Axle/Gears: 3.42
speedo off,need right speedo gear

86ROC,700r4,245/50/16's tires,3.23rear gears switched to 3.73 but mechanic never changed trans gear so speedo off.Which gear do I need,Thnx.
IROCZ4BD3
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Old Sep 11, 2000 | 10:44 PM
  #2  
Apeiron's Avatar
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Joined: Jan 2000
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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
The grey 15 tooth drive and light blue 45 tooth driven should work pretty well. Sorry I don't have part numbers for the gears. With a 3.23 rear you should already have the grey drive gear so you won't have to change that, but pop the sleeve and drive gear out and have a look before you go to the parts counter. When you go, take your old sleeve in with you, you'll probably need to replace it to match the new driven gear. Some 700R4 tailshafts take a long-nosed sleeve and some take a short-nosed sleeve. Comparing the new one with the old one is a better way to tell you're getting the right one than trying to remember which one you have at home and getting the wrong one. Ask me how I know this.

[This message has been edited by Apeiron (edited September 11, 2000).]
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Old Sep 12, 2000 | 01:55 AM
  #3  
Justins86bird's Avatar
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From: Another world, some other time
Car: 86 LG4 & 92 TBI Firebird
Engine: The Mighty 305!
Transmission: 700R4
Axle/Gears: 3.42
Make sure you know whether your speedo is mechanical or elec. before you goto the dealer. I had to special order the part, and naturally they ordered the wrong one.

------------------
-Justin-
T-Top '86 5.0L LG4 700R4 WS6 Now Bilstein equipped!
T-Top '92 5.0L TBI 700R4
My '86 Firebird Homepage
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