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  1. T

    73 9 inch rear end seal replacement

    I don’t think my abilities would go as far as pulling anything else out of there. I did pull out the outer bearing and it looks fine, but now I cannot get it to back in...lol. I probably need to add some oil to it and the shaft to help it slide in, since I wiped the one it had on it when I...
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    73 9 inch rear end seal replacement

    My mustang has pretty much sat in the garage ever since I bought it about 3 years ago waiting for a transmission swap. I would run it for 15 min twice a week. One day I noticed a small puddle of rear end oil. Now, with all the time spent at home I decided I'd give it a shot at replacing the...
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    Transmission advice

    So I ended up swapping the bellhousing and range selector arm/shifter linkage from my original transmission to the replacement. The transmissions were swapped this past weekend. (I ended up hiring a mobile mechanic and tagged along to learn) I took the car out for a short test drive and it seems...
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    Transmission advice

    I kind of thought that might the case since most trucks have a column shifter. I know they are different on the C4 and C6, but didn’t really investigate much about the differences in the FMX. I read in another forum that the tail shaft and housings are of different length and that both would...
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    Transmission advice

    I found a guy selling an FMX. He said it was rebuilt, he bought a new converter, installed it on a 60s/70struck, but never ran it. Then decided to go with an AOD instead. So he removed it and stored it. He added some tranny fluid to the converter and transmission. When comparing it to my...
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    Transmission advice

    I have been considering dropping the transmission and give it a shot at the rebuild using the Bad Shoe Productions video. I have never removed a transmission before either, but have seen a few videos on what the process is and found this post as well...
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    Transmission advice

    I found those videos from Bad Shoe Productions while looking up FMX tutorials on youtube. All I found was a video of a guy with a French accent disassembling the transmission. I have zero experience with transmissions so I felt like I was not getting much out of it (especially since my...
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    Transmission advice

    @mudbilly - don't plan on using it as a daily driver so probably less than 200 miles a month I would say. @mbrew2 - sounds as if you were describing my car. It is also a 73 convertible. I have come to believe that the FMX fits the use I have planned for this car and do not really need to go...
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    Transmission advice

    Both shops said they have to remove/install for the warranty to be valid.
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    Transmission advice

    I am in a bit of a dilemma and wanted to get your suggestions. The FMX on my 73 with a 351C was suffering from “morning sickness”, but the last time I took it for a drive around the block it was slipping and I even thought I might not make it back home. In the end I did make it home but have...
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    351C intake swap carb issues

    Well I feel stupid! I went back and checked the firing order and I had mixed up the wires on one side of the motor. I fixed that now and have not gotten the backfire (thanks for the correction) at startup, but I still get it when I floor it while driving. The car seems like its going to die when...
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    351C intake swap carb issues

    I removed the wires and cap from the distributor. I was going to try to remove it, but could not remove the bolt with the tools I had so I left it in there; and completed the intake swap with the distributor in place. I installed the plate to "convert" the intake to a dual plane intake. Other...
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    351C intake swap carb issues

    I recently swapped my stock 2 bbl intake and carb for a Weiand X-cellerator I bought used and a new Edelbrock 650 cfm Thunder series carb. My car is a stock 73 351C 2v with a duraspark ignition (bought it like that from the PO) and an FMX. I am having a couple of issues after completing the...
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    My first car with FMX

    Thanks for the suggestions. I had no idea this transmission required this much attention to detail. I usually take the car out for a drive on the weekends, so it most likely had been sitting for about 1 week. The car was at normal operating temperature when I checked the fluid level as I had...
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    My first car with FMX

    This is my first time owning an FMX car. I have had a 302 with C4 and 351W with toploader in my previous 2 Mustangs. I have a couple of questions, but will address one issue at a time.  When I pull the car out of the garage and into the driveway I've experienced the following symptom. The...
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    Back Up lights/NSS wiring 73 FMX

    I reconnected the two wires and they work now. It seems the high beam switch was removed. There is nothing on the floor by the accelerator pedal. I will focus on that later on though. Thanks for the help.
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    Back Up lights/NSS wiring 73 FMX

    Got it. Thanks for clearing that up. I just call it parking brake plug to reference its location. Sent from my Pixel using Tapatalk
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    Back Up lights/NSS wiring 73 FMX

    So if I understand you correctly, then the white/pink wire goes to the same plugs as the black/purple wire ( both the black plug in the engine compartment and the white plug near the parking brake pedal), but instead of making its way to the tail light assembly in the white plug, it goes to the...
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    Back Up lights/NSS wiring 73 FMX

    I have been working on trying to get the back up lights to work on the 73 convertible I bought a couple weeks ago. It has a 351C with an FMX transmission. There were no bulbs in the sockets, so I tried that first, but it did not work. I started checking and there is no power getting to the wire...
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    351C timing/vacuum adv

    Turns out that port was manifold vacuum. I did find the ported vacuum port on the carb and connected the line there, the RPMs went up. I hooked up a tach and RPMs were at 1500 so I reduced it to 1000 rpm (900 in Drive). Timing went up to 14° at idle from 10° when disconnected. When I revved the...
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