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Old 07-20-2003, 12:37 AM
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Fmx

can any one tell me if a fmx is as strong as a turbo 400 andcan i run it with the kickdown cable of it i have herd you can

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Old 07-20-2003, 08:22 AM
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Cool Re: Fmx

Quote:
Originally posted by carnell
can any one tell me if a fmx is as strong as a turbo 400 andcan i run it with the kickdown cable of it i have herd you can

======== No, The FMX is not as strong as a T-400 and the TV linkage needs to be hooked up.
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Old 07-20-2003, 12:40 PM
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It won't downshift without the downshift linkage and it is not as strong as a TH400.
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Old 07-20-2003, 08:00 PM
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so will it be manulised then
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Old 07-21-2003, 08:50 PM
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No it will become junk, the cable regulates internal pressure, it senses what your throttle is doing and determines the correct pressures and shifting speeds.
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Old 07-22-2003, 01:28 AM
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Question

We are talking about a cast iron case FMX correct? There is no TV (Throttle Valve) cable. It works off a modulator valve and kickdown linkage for shifts. The kickdown can be eliminated with a manual valve body.

Now the AOD has a TV cable. Which tranny are you working with?
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Old 07-22-2003, 07:28 PM
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My experience has been that the FMX is a great trans for a 2 ton vehicle that is driven to the grocery store and church on Sunday. It can hold up to towing if it is set-up right with all the linkages and vacuum line hooked up right. For performance, I wouldn't even try it. They will not last with the kick-down disconnected, as it will quickly burn it up due to low pressure under load.

Due to the cast iron case, it does make a good boat anchor!
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Old 07-23-2003, 08:03 AM
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i think its cactus anyway because its staying in 1st when i take of in drive and staying in there no mater how many revs i give it when i click it back to second it will change in to it and when i click it in to drive again it will change at around 4000 grand into it but if i go any slower than 70 kmh it will click back to second any ideas ???????? do you recon i throw it away and put the c4 in it or buy a c6 or put in it
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Old 07-24-2003, 12:29 PM
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Older FMX transmissions use a TV cable just like the AOD does. The lighter duty aluminum body ones and even cast iron case ones. Later models (don't know exactly when the change occured, but sometime around 66) use the vacuum modulator for pressure control. You'll have one or the other. Some vac modulated models use an electric kick-down solenoid. The TV cable serves as a kick-down when pushed in all the way and car is under a certain speed. The FMX is a development of the Borg-Warner/Studebaker transmission. BW and Stude started co-developing a trans, and Ford joined them. Some parts will even interchange. Other than Stude, AMC bought these from Borg-Warner, as well as Jaguar and Volvo. The Aisin-Warner used in Lexus, Infinity, Toyota, and 4.0L Jeeps is a derivative as well. Aisin-Warner is the Japanese division of Borg-Warner (may be a separate entity now).
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Old 07-24-2003, 12:50 PM
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I've had FMX's (originally cast iron cruiso's) in vehicles back as far as the '50's and they all have kickdown rods and modulators not TV rods, all the Ford automatics, up until the AOD used them. On the earlier ones they operated off of a linkage that was attached to the intake manifold and it may give the appearance of a TV linkage for those used to that type, but it is a kickdown. I think the FMX is probably as strong as the TH400 ( a lot heavier) it was used behins the 427 Thunderbolts in the early to mid 60's, so it has plenty of strength, just that damned weight.

Addendum;
apparently after checking some old parts books, there was one version offered in '58-'60 (concurrently with the others) that didn't use a modulator like the others, either that or it was different enough not to be available any longer.

Last edited by woodz428; 07-24-2003 at 01:04 PM.
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Old 07-24-2003, 06:33 PM
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I did trans work from the mid 70's until the mid 80's. We did work on the FMX's every once in a while. The internals are as heavy as the case. The biggest problem I had found with them is that they would burn up easy if the kick down was not adjusted properly. Since they usually were in the heavier cars, it was very important to have the trans down shift at the right load point. I never remember seeing one with a TV cable on it, or no modulator for that matter. As I recall they had hard rods or tubes that connected to the arm on the trans like the C-4 and C-6. Up at the top the linkage usually was connected in steps to the carb, in that there was a swivel and another rod before the carb. They obviously had to be strong to a point, as they were used in vehicles that weighed 2 tons or more.

I guess if you are building a lead sled, they would not be that bad. Not if you can find someone that can rebuild one. They are definately a bird of a different breed.
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Old 07-24-2003, 10:14 PM
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According to Ford the AOD internals are based on the FMX.
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Old 07-25-2003, 08:14 AM
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I know the FMX/Cruise-O-Matic were developed with Borg Warner and Studebaker (I have an article from the late 50s about when they came out). I did a little more research myself. Apparently only the lighter duty versions used the TV cable. I'm more used to the aluminum case versions used behind sixes. I looked at the one in my V-8 Rambler and sure enough, a vacuum modulator. It's a 63 with the cast iron B-W, like the old Cruise-O-Matic. Checked my books after that -- all the model 10/11/12 (the big iron units) use a modulator as well as the medium duty aluminum case model 40/4x.

Only the light duty model 35/37/38 used the TV cable, and they were only used behind 232 and smaller sixes (and only a year or two behind the 232, apparently it didn't hold well behind anything over 200 inches). I didn't look to see what Ford used behind the 170/240, most of you guys don't mess much with sixes either!! I do, but mostly the bigger late model AMC/Jeep (have a 4.0L EFI bored/stroked out to 4.6L -- everyone thinks I have a Mustang or Crown Vic V-8 when I tell them the size!!). But I had a Rambler with the 196/M-35 for a long time, and have pulled many of them out.

There are some tricks to building the B-W/FMX, but as stated -- finding someone who knows how to build one is a different story. Check Volvo and foreign car specialists. Volvo used a model 55 (almost the same as FMX internally, but it used a TV cable) through 79 or 80, and Jaguar used a similar trans even behind the V-12 through 83 or so (then they switched to the TH-400).
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Old 07-25-2003, 08:25 AM
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Farna; I am about to rebuild two FMXs for the Mysterion project. Can you tell me the 'tricks'? Do you know where I can find a rebuild manual or am I stuck with the out of focus pictures in a Chilton's?
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Old 07-25-2003, 08:28 AM
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Cool

Interesting discussion on the FMX has developed. You can see some similarities in design of parts to the FMX inside the AOD.

We just repaired an old Cast Iron cruise-O(same basic design as FMX) with a cracked center support. A buddy of mine has the tools that bolt onto the center support, you drill and tap a hole for a bolt to hold the pieces together.

A variation of these trannys were used in so many different brands of vehicles. I always enjoyed knowing that some of the vehicles the "nose in the air type people" drove were built with common Ford or GM parts


Another segway; I am building a Ford 200 CID 6 cylinder with a Australian Ford cylinder head for a 62 Falcon. I will drag race the car with a full manual C-4 behind the 6 cylinder engine. People ask me "why?" and I don't really have a good answer cept I want to.....
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