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How to change 200R4 drive gear?

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Old 02-10-2009, 01:31 AM
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avner
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Default How to change 200R4 drive gear?

Hello
I need to change the drive gear inside the 200R4 because I change the rear end ratio, I need some guide lines and pictures to know How to do it.
Thanks
Avner
Old 02-10-2009, 08:24 AM
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TimAT
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BAd news, bro. The speedo drive gear is on the output shaft and that's the first part that goes in when you rebuild a 200-4R. And that trans does not have a removeable tailhousing.

Bottom line is you have to tear the tranny down completely to replace the drive gear.
An option is getting a ratio adapter from some vendor.
Old 02-10-2009, 10:19 AM
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avner
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Thanks Tim
I will put ratio adapter on the speedo cable.
Old 02-10-2009, 03:09 PM
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Seasoned80
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I'm running a 200-4R and my understanding is that the drive gear is on the governor and can be changed by just removing the governor.
Old 02-10-2009, 04:12 PM
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Artsvette73
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Originally Posted by TimAT
BAd news, bro. The speedo drive gear is on the output shaft and that's the first part that goes in when you rebuild a 200-4R. And that trans does not have a removeable tailhousing.

Bottom line is you have to tear the tranny down completely to replace the drive gear.
An option is getting a ratio adapter from some vendor.
This is not true at all. The 2004r trans speedo drive gear is on the end of the governor. There are 4 diffrent drive gears and 6 diffrent driven gears. The pan needs to be dropped and remove the governor cover to change the drive gear
Old 02-10-2009, 05:38 PM
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Attfay Elleybay
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Wouldn't it be easier to change the rear end gears?
Old 02-10-2009, 08:49 PM
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MakoShark72
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Originally Posted by TimAT
BAd news, bro. The speedo drive gear is on the output shaft and that's the first part that goes in when you rebuild a 200-4R. And that trans does not have a removeable tailhousing.

Bottom line is you have to tear the tranny down completely to replace the drive gear.
An option is getting a ratio adapter from some vendor.
Uh, I dont think so....
Old 02-11-2009, 03:57 AM
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avner
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So what to do?
There is anyone here that changed the drive gear inside the 200R4?
I have in my hand the correct drive gear & driven gear for the new rear end ratio.
Thanks
Avner
Old 02-11-2009, 09:34 AM
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Artsvette73
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1 Remove the speedo cable and driven gear from the housing
2 drain fluid and remove the pan
3 the governor cover has 4-13 mm bolts remove them and the cover
4 remove the snap ring on the governor shaft and remove the gear
Reverse order to instal.
Note: You should replace the governor cover gasket if it is cracked or brokenl

Below is a pic of the governor. The thin gear drives off the out put shaft. The larger gear is the drive gear for the speedo driven gear

Old 02-11-2009, 09:45 AM
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mdbelanger
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You don't have to go as deep as my pic shows just the cover that you see in the back ground above the green gear.

Last edited by mdbelanger; 02-11-2009 at 09:50 AM.
Old 02-11-2009, 04:34 PM
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avner
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Artsvette73 & mdbelanger
Thanks for the guid lines an pic'
My 200R4 it's new still in the box.
I will change the drive gear I think I can do it but it will need to wait a bit because now I'm working on the engine an the staff arund it to be redy for first time.
You can see in this link some prograsse that I did.
http://forums.corvetteforum.com/c3-g...-pictures.html
Thanks
Avner

Ok I changed the drive & driven gear as Artsvette73 & mdbelanger explain & it was easy to do.

Last edited by avner; 02-17-2009 at 08:23 AM.

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