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I don't need to worry about the speedo connections I am using a GPS speedo.
JOSE;150390]Hi Limey,
You´ll need a Mustang II bellhousing (I have a source for one if you can´t find one easily.) and a T5 transmission since you already have the flywheel and clutch. You will also need to modify your driveshaft to fit the T5 with a front yoke that fits the T5. You will need a slave cylinder mounting bracket to mount the external slave cylinder we are using. You will need to use a pilot bearing adapter (I have someone who can make one for you, and it comes with a new pilot bearing) if you use one of the early versions of the T5 (years 1986-1979). I Personally recommend using the transmission from behind the 5.0 V8 Mustang of one of those years, because it has a better set of gear ratios for the V6, that will gve it better performance all around.
The only other thing you´ll need to do to get the T5 to fit the Mustang II bellhousing, is you´ll need to remove the front collar of the transmission, and have the O.D. turned down in size to fit the hole in the bellhousing. Give yourself between .0020" to .0025" clearance, so it will slip in easily. be careful as you remove the front collar, so you don´t lose one of the rollers from the front bearing, into the transmission case. The best way to avoid this is to have the transmission slightly nose down when you remove the collar. To mount it again, use a little light grease to hold the rollers in place as you reassemble it.
To hook up the speedometer, just measure how much of your old cable you will need (make sure you have enough so you don´t kink it when you hook it up). After you have the length you´ll need, take it to a speedometer shop and have them cut it to length and put a Ford end on it (the part that slips into the transmission). Go to a Ford dealer and get a 21 tooth gear to put on it and then install it. With the 21 tooth gear you will get to where it reads about 10 persent fast, which is better than 10 percent slow, because it will help you keep from speeding. To get it to read accurately, you will need to have a gear reduction box, which can set you back about $200, but isn´t absolutely necessary.
With these few things, you will really enjoy driving your V6. It will shift easily and smoothly. I almost forgot. I recommend getting an after market shifter, like Pro 5.0, Holley or other good shifter. The main reason I recommend using one, is that the stock shifter isn´t as accurate in shifting, and it doesn´t have shift stops. You need shift stops so you don´t over shift the transmission while driving enthusiastically. If you won´t be driving with verve, you won´t necessarily need one, unless you want the smoothness it can afford.
All in all, I think the T5 will last longer, shift better and give better service.
Jose
