FMX coolant lines

vintageman · Mar 24, 2021

As I am nearing the installation of my FMX trans, I have new lines to install as well. Does anyone have a pic or two for the correct routing of the lines and which line goes toward the top of the radiator and location on the transmission? This car was missing everything when I got it, so all advice is really appreciated. BTW, if needed, it is a 1973 (72 engine), 351C with the stock type radiator. Thanks in advance.

Tom

Hemikiller · Mar 25, 2021

The lines are unique and hard to mix up on an FMX.

machattack · Mar 25, 2021

Hemikiller said:
The lines are unique and hard to mix up on an FMX.

View attachment 49791

Hemi killer,

Now I feel stupid. I was so excited when you posted this, darn near giggled

Im in the same scenario. 71 mach 1 Car didnt have the tranny or radiator. Has a o.e 351c and O.E radiator . But I dont understand the pic drawing that you so kindly provided.

machattack · Mar 25, 2021

machattack said:
Hemi killer,

Now I feel stupid. I was so excited when you posted this, darn near giggled

Im in the same scenario. 71 mach 1 Car didnt have the tranny or radiator. Has a o.e 351c and O.E radiator, O.E FMX . But I dont understand the pic drawing that you so kindly provided.

Hemikiller · Mar 25, 2021

machattack said:
Hemi killer,

Now I feel stupid. I was so excited when you posted this, darn near giggled

Im in the same scenario. 71 mach 1 Car didnt have the tranny or radiator. Has a o.e 351c and O.E radiator . But I dont understand the pic drawing that you so kindly provided.

What's your specific question?

machattack · Mar 26, 2021

Does the top radiator line go into the front port of the tranny? or the back port of the tranny?

Thanks

Hemikiller · Mar 26, 2021

Front port is out to cooler, rear port is return from cooler. Front goes to upper, rear to lower. To be honest, it doesn't matter which direction you go. If you get the pre-bent lines, they're impossible to mix up.

https://www.sstubes.com/collections/transmission-lines/products/ztc7102om-71-73-ford-mustang-mercury-cougar-fmx-transmission-cooler-lines-2pc-line-set-steel

vintageman · Mar 26, 2021

Thanks so much brother, I appreciate the pic and the clarification on this one. I do have the pre-bent ones but to be honest, I installed them on my transmission since it's still on the bench and looked at the front end of the tubes and they both looked like they could go to either top of bottom on the radiator. I had been drinking but I don't think that was the issue, classic lines has not really impressed me with their pre-bent lines lately. Thanks again.

Tom

machattack · Mar 26, 2021

Thanks Hemi Killer!

I dont have any of the lines for the fmx. Otherwise I might of been able to figure this one out. I will get them on order today.

Thanks again for the clarification! the pics and all you do for the forum.

Rod and Sally

Carolina_Mountain_Mustangs · Mar 28, 2021

Now would be a great time to add a stand alone transmission cooler. It will take the extra heat out of the radiator and your transmission oil will be much cooler than the hot radiator. I added one to my 73 vert. Did not drill any holes anywhere so could be removed and never know it was there. I made one bracket that attached to the center support of the grill. The other went to the radiator support both use Ford installed fasteners. I used a Hayden fan cooled and you can hold the return line and barely warm after the cooler. Helps the engine stay cool and the transmission last longer. I use the smooth fuel injection type hose clamps here are some pics of install and the cooler. Seems like I got from Summit. Just put brass plugs in the radiator fittings. Cut metal lines and added rubber at the cooler. Been on about 2 + years no issue.