mustang transmission

[slayton67]

im wanting to put a mustang 5 speed in my 67 f100 it already has a 302 and i want the mustang trans for the stouter gears and speed shifting i was originally wanted the truck 5 speed but decided i wanted something else what all mods would need to be done to put the mustang transmission in?

[sargentrs]

The overwhelming thing that comes to my mind is the shifting mechanism. Our trucks were designed for a "push" type shifting operation and the newer model Mustangs (from at least the fox body years forward) use a cable operated "pull" type mechanism. That can be overcome by going to a hydraulic clutch system and floor shifter but will require some modifications to retrofit a hydraulic clutch.

[slayton67]

I know the truck 5 speed requires the same mod

[sargentrs]

Excellent! Take lots of pics and post 'em up so we can follow your lead.

[slayton67]

Is it basically the same modifications needed to do the m5r2 swap? And wats the correct name for the mustang transmissions?

[ultraranger]

Is it basically the same modifications needed to do the m5r2 swap? And wats the correct name for the mustang transmissions?

I'm guessing you are referencing the T-5 that came in the Fox Mustangs from 1983-1993. 1985 and up T-5s were World-Class transmissions as opposed to the Non-World Class T-5s from '83 and '84. The best versions of this transmission came in the '90-'93 5.0L LX and GTs. These versions have improved alloy material in the gears to make them stronger and they have better synchronizers. World-Class T-5s do not use gear oil. They use automatic transmission fluid.

The Fox Mustang 5.0L T-5s have a 3.35:1 1st gear ratio and a .68:1 5th gear overdrive ratio. If you have low rear end gears, 1st-to-2nd gear change of the transmission will come very quickly.

A stronger version of the Fox T-5 is the '93 Cobra T-5. It has a 2.95:1 1st gear ratio and a .62:1 5th gear overdrive ratio. If you have low rear end gears, 1st-to-2nd gear shift will be spread out more than with the regular LX/GT 5.0L T-5. An even stronger version of the '93 Cobra T-5 is the Z-spec T-5 Ford offered over the counter. It is rated for somewhere around 330 ft/lbs of torque. The Z-spec is available from many aftermarket vendors.

If you need a transmission with a greater torque capacity, I would suggest looking at a Tremec TKO-500 or 600 5-speed.

The 1994/'95 5.0L Mustangs also had T-5s but the input shaft on them is slightly longer than the '93-earlier versions which means you have to have the correct bellhousing for those transmissions ('94/'95 bellhousing is slightly deeper than previous years). --in 1996, Ford dropped the 5.0L engines in the Mustangs and switched to the 4.6L Mod engines. The 5-speed manuals in them are Tremec 3650s, they do not have detachable bellhousings and they do not bolt up to Windsor block patterns.

[slayton67]

And how would the speedometer hook up and wat would i do about that? And how do i identify the t5's?

[ultraranger]

Your existing speedometer cable should work and even the plastic driven gear on the end of the cable would be the same Ford Type-3 driven gear as used in the C-6, C4, & Top-Loader 3-speed manuals so, it can be swapped out (if needed) to compensate for your truck's rear end ratio.

Type-3a speedometer driven gears were used on the old Ford Top-Loader 4-speed transmissions (like in the old Mustangs, Cougars, Torinos, etc.). The speedometer drive and driven gears on the these transmissions are cut backwards from the Type-3 driven gears because the speedometer cables enter the tailhousing from the passengers side instead of from the drivers side.

Driven gears come in 16 through 21 tooth counts. There are some 23 tooth aftermarket speedometer driven gears for really low (high numerically) rear end ratios, but the teeth on these driven gears are really thin and tend to wear out pretty quickly.

The speedometer drive gear on the T-5 output shaft can be changed out as well. They come in 6, 7, and 8 tooth counts.

http://www.americanmuscle.com/speedo-ge ... 998t5.html

There should be an aluminum tag attached to one of the bolts on the transmission --most likely where the tail housing attatches to the main case body. On the tag will be code numbers that identifies what the transmission was designed for. The link below has a list to cross reference what the numbers mean.

If you're going with a 5.0L LX/GT Mustang T-5 transmission, remember that 1990-1993 is the best version of those to have.
1993 Cobra T-5 is slightly stronger and has a 2.95:1 1st gear ratio compared to the 3.35:1 1st gear ratio of the 5.0L LX/GT Mustangs. The 2.95:1 1st gear ratio is better if you have low (high numerically) rear end gears, like 3.50, 3.70, 4.11, in
your truck. The 3.35:1 verion is more common and will work with lower rear end gears but, be aware the transmission gear changes from 1st to 2nd will come much sooner than a T-5 with a 2.95:1 1st gear ratio.

http://www.britishv8.org/Articles/Borg- ... D-Tags.htm