Mechanical speedo conversion on 200r4? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 07-27-2012, 01:51 AM
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Mechanical speedo conversion on 200r4?

I picked up a 200r4 out of a '90 Caddy that I need to put in my '83 Olds. I want to convert the electronic speedo connection this has to mechanical. I know there's a kit out there but I'd rather do it the right way since the trans is out.
From what I've read the pan needs to come off and the governor needs to come out. From there I'm not sure what's involved or if there's more to it. I also don't know what gears I'd need for the stock 2.73 rear. Wish it was as easy as just removing the connector and putting the "bullet" in for the mechanical.

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Old 07-27-2012, 02:24 AM
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im assuming at this point so i may be wrong. if its like a 4l60e( electronic 700r4) u will just need to remove tail housing and remove reluctor wheel off of tail shaft. then get proper gear from another 200r4 for manual speedo and put back on tailshaft. you may have to change tail housing to manual one. im not sure. but most parts should be readily available at salvage yards considering these trannies came in almost all metric cars built.. hope that helps
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Old 07-27-2012, 04:33 AM
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Every 200-4R I've ever seen had a mechanical speedo drive. The VSS on these cars was in the speedo head itself. You might want two verify what type of trans you actually got.
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Old 07-27-2012, 05:55 AM
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Quote:
Originally Posted by dirtburner View Post
im assuming at this point so i may be wrong. if its like a 4l60e( electronic 700r4) u will just need to remove tail housing and remove reluctor wheel off of tail shaft. then get proper gear from another 200r4 for manual speedo and put back on tailshaft. you may have to change tail housing to manual one. im not sure. but most parts should be readily available at salvage yards considering these trannies came in almost all metric cars built.. hope that helps
200-4r does not have a removable tail housing.

The trans never had a electronic speed-o design as the 4L60E you mention
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Old 07-27-2012, 11:38 AM
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It does in fact have the electronic and I know it's not the VSS. It installs the same way the speedo bullet would and actually looks like a direct swap now that I took it apart. Just need to put in a bullet with a 26 tooth gear. '90-92 were the years Caddy went with the digital speedometer and no the tail housing isn't removable.
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Old 07-28-2012, 09:08 AM
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I'm running two 200r4's and both are mechanical with shift cable at the carb.
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Old 07-28-2012, 12:15 PM
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just use the mechancal adapter from a cable drivn one that style doesnt use a releculator wheel
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Old 08-01-2012, 09:10 AM
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X2^^, just need the Bullet & Gear.

Do you know what the Drive gear on the Gov is? How many teeth?

13-tooth Drive & 26 or 27-tooth Driven is about as close as you'll get if you have a 27" tall rear tire. If 26" Tire, 27 or 28-tooth Driven gear.

Many of the 2004R gears are getting hard to find.
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Old 08-01-2012, 02:17 PM
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Might be some needed info on here.
Speedometer Gear, Speedometer Gears, Ford, GM, Dodge 700R4
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