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warmonger
Hard-core CEG'er

Reged: 08/16/01
Posts: 5810
Loc: Ozark, AL
Re: Part #'s Upgraded MTX 75 Transmission shift fo
#420521 - 10/02/03 08:34 PM

No.

If the speedo gear drives the driven gear one revolution every time the differential spins once, then the gear ratio would be irrelevant.
For example, you change final drive ratio to the ZETEC FD of 3.86:1 from 4.06:1
Intuitively you think that the diff will spin slower. i.e. it only spins 3.86 times per 1 input revolution versus over 4 times per one revolution for the other FD.
Well, the speedo drive gear turns the same speed as the diff so its going slower too. Then, figure that the tires are also going slower because they are hooked directly to the diff without any other gear changes.
What will throw your speedometer off is changing tire sizes.

Now, don't get this confused with changing a final drive on a rear wheel drive vehicle! The rear wheel drive vehicle has the final drive in the back, AFTER the speedo gear measures the transmission output shaft speed. In this condition the output shaft speed remains constant while the wheels will spin at different speeds from the changed final drive and this change will not be reflected in the speedo. That is why some companies offer changing the speedo calibration in the computer to reflect gear changes. Those computers that read the sensor will have a different multiplier put in to compensate for the different final drive.

Again, you should have to do nothing except move your diff from the one transmission to the other along with the bearing races, and re-measure the shim thickness. While you are at it, upgrade those shift forks since they are easy.
You can do the shift tower later if money is an issue as it can easily unbolt while the trans is in the car.

--------------------
Former owner of '99 CSVT - Silver #222/2760
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Subject Posted by Posted on
* Part #'s Upgraded MTX 75 Transmission shift forks+ warmonger 05/20/03 01:32 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift fo Kremithefrog 02/16/06 01:47 AM
. * Re: Part #'s Upgraded MTX 75 Transmission shift fo Bill J. at Team Ford 02/16/06 05:17 PM
. * Synchro part numbers ssmumich00 03/04/04 06:15 AM
. * Re: Synchro part numbers GTO Pete 03/25/04 07:48 PM
. * Re: Synchro part numbers 99REDSE 06/23/04 07:35 PM
. * Re: Synchro part numbers DemonSVT 06/23/04 08:41 PM
. * Re: Synchro part numbers 96_98_SE 09/23/04 11:35 AM
. * Re: Synchro part numbers midway22 11/18/04 01:32 AM
. * Re: Synchro part numbers OutlawdSVT 01/04/05 04:18 AM
. * Re: Synchro part numbers dukeofsho 04/07/05 03:19 AM
. * Re: Synchro part numbers Bugzuki 04/09/05 04:27 PM
. * Re: Synchro part numbers GTO Pete 03/04/04 11:46 PM
. * Re: Synchro part numbers ssmumich00 03/05/04 04:46 PM
. * Re: Synchro part numbers Swazo 03/05/04 06:33 PM
. * Re: Synchro part numbers Blackcoog 03/09/04 10:19 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ myfastse 03/02/04 11:04 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ CJ98 02/06/04 01:51 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ ssmumich00 02/06/04 04:37 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ CJ98 02/07/04 12:11 AM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ Blackcoog 02/17/04 09:19 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ Blackcoog 02/24/04 05:36 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ ieffem 02/26/04 01:38 AM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ ssmumich00 03/01/04 08:58 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ DemonSVT 02/06/04 08:43 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ bigerik 12/19/03 05:21 AM
. * Re: Part #'s Upgraded MTX 75 Transmission shift fo warmonger 12/19/03 01:35 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift fo bigerik 12/19/03 02:30 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ ssmumich00 11/24/03 05:39 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ Judge 08/18/03 08:58 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift fo Lance KinleyAdministrator 07/31/03 04:32 AM
. * Re: Part #'s Upgraded MTX 75 Transmission shift fo shotwell 08/22/03 06:34 AM
. * Re: Part #'s Upgraded MTX 75 Transmission shift fo Rev. Po-Jay 10/01/03 02:58 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift fo ssmumich00 10/01/03 04:03 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift fo Rev. Po-Jay 10/01/03 08:13 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift fo warmonger 10/02/03 02:07 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift fo Rev. Po-Jay 10/02/03 05:44 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift fo warmonger 10/02/03 08:34 PM
. * Speedometer Gear DemonSVT 10/03/03 03:48 AM
. * Re: Speedometer Gear warmonger 10/03/03 11:43 PM
. * Re: Speedometer Gear DemonSVT 10/04/03 04:31 AM
. * Re: Speedometer Gear brianl703 12/22/03 11:49 PM
. * Re: Speedometer Gear warmonger 10/04/03 02:34 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ Blorton 07/24/03 04:53 AM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ 1314 05/20/03 03:59 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ MotorCity 05/20/03 04:37 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ Bill @ SigLM 01/06/04 10:04 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ Bill @ SigLM 10/18/03 10:55 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ ssmumich00 11/24/03 05:13 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ kinger 05/20/03 06:04 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ Livinsvt 05/21/03 01:19 AM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ TorsenRick 05/21/03 12:14 PM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ TGO 05/21/03 02:05 AM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ warmonger 05/21/03 02:25 AM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ fordrule 06/25/05 09:16 AM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ kinger 05/21/03 06:11 PM
. * Pictures of Warmongers Transmission Barge 05/22/03 12:05 AM
. * Re: Pictures of Warmongers Transmission bamf2go 05/26/03 11:27 PM
. * Re: Pictures of Warmongers Transmission warmonger 05/28/03 03:14 PM
. * Re: Pictures of Warmongers Transmission Lance KinleyAdministrator 05/28/03 06:57 PM
. * Re: Pictures of Warmongers Transmission warmonger 05/30/03 02:40 AM
. * Re: Pictures of Warmongers Transmission Bradness 01/12/06 02:38 PM
. * Re: Pictures of Warmongers Transmission todras 01/12/06 03:03 PM
. * Re: Pictures of Warmongers Transmission Bradness 01/13/06 02:05 AM
. * Re: Pictures of Warmongers Transmission ctmystique 01/30/06 03:04 AM
. * Re: Pictures of Warmongers Transmission todras 02/16/06 05:32 PM
. * Re: Pictures of Warmongers Transmission todras 02/28/06 01:34 PM
. * Re: Don't feed the trolls warmonger 01/13/06 02:14 AM
. * Re: Pictures of Warmongers Transmission TorsenRick 06/17/03 02:54 PM
. * Re: Pictures of Warmongers Transmission Kool Aid 06/28/03 09:35 PM
. * Re: Pictures of Warmongers Transmission RayWee 07/08/03 02:36 AM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ TGO 05/21/03 03:08 AM
. * Re: Part #'s Upgraded MTX 75 Transmission shift forks+ Livinsvt 05/21/03 04:45 AM

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