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

How do I change the speedo drive gear?

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Old Jul 15, 2001 | 01:34 PM
  #1  
Jim85IROC's Avatar
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
How do I change the speedo drive gear?

When I swapped transmissions, I swapped the driven gear but not the drive gear into the new trans. I can't get the driven gear off of the output shaft. I depressed the little locking tab, but I can't move it or the gear. How do I get it off?

I apologize if this is somewhere in the archives. I did a search and didn't come up with the info I need.

Oh yeah, one more stupid question (Can you tell I'm not a tranny guy?). Will having the speedo off by 20% or so have a major impact on the drivability and operation of the trans? Before I pull this new trans back out I want to swap the drive gear and see if it has an effect on drivability, but I'm really not expecting it to.

Anyway, thanks for the help.

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Old Jul 15, 2001 | 04:31 PM
  #2  
Apeiron's Avatar
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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
I used an open-end wrench a littler larger than the diameter of the output shaft and tapped it with a deadblow to slide the gear off slowly.
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Old Jul 15, 2001 | 06:24 PM
  #3  
ede's Avatar
ede
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From: Jackson County
i take them off with a bearing seperator in a press, but i doubt if you have your's apart that far. you can put them on by leaving the rear seal out and driving them on with a long piece of round stock for a punch.

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Old Jul 15, 2001 | 07:23 PM
  #4  
Jay 727's Avatar
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From: FL



[This message has been edited by Jay 727 (edited July 15, 2001).]
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Old Jul 15, 2001 | 09:27 PM
  #5  
GMTech's Avatar
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From: Vereinigten Staaten
Car: Take
Engine: Your
Transmission: Pick
The procedure Aperion describes is in here: Speedo gear

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Old Jul 16, 2001 | 07:15 AM
  #6  
Jim85IROC's Avatar
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Thanks.

------------------
The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
"I didn't know a bored out Ford could go so slow" -Shenandoah
Reply
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