7.3L Diesel Swap 

Yeah! I plan on it thank you!

Thank you it sure is

The wiring to make the motor work was super easy. Like 5ish wires you only need power to the glow plugs, injection pump, and key on power to the alternator to make everything work. I used the stock 73 wiring harness to control the entire truck, I just added those wires to run the motor. No complaints on any of it. So in your case I’d try to retain the 70s f250 wiring and make it work on the obs idi motor. Basically what I did. I ran my glow plugs to a switch, and my cold timing advance to a switch as well. I tied my injection pump to a wire that had key on power and cranking power, I ran the wire for the starter off of the old starter solenoid to trigger the Idi starter solenoid, and a key on power for the alternator to know when to charge. And a few random ground wires are needed. Very easy. For the brake lights you can probably splice into the obs wiring harness to make them work

Only 2 in just to clear the down pipe on the turbo.

What about it? I think mine goes to around 15-20 when it’s warm. But I think it’s a slightly lower reading than it really is. I think the gauge is not the best, and i am getting it from the top of the turbo area.

Way less! There’s literally only 2 wires needed to run this motor, and a couple grounds

@@Andrewj2152 awesome thanks for the information will you ever do a more in depth video of how you wired it and got the gauges working?

I can.

@@Andrewj2152 that would be awesome. One more question, did you rebuild the motor before the swap? I noticed that I was repainted.

@@MatthewG_208 I did rebuild it, stage 1 turbo cam, head studs etc. all new seals and bearings and rings. Stock rods and crank and pistions

At the time of the video, it had 4.10s. Earlier this year I swapped in superduty axles from a 2006 which have 3.73 gear ratios. With this motor and tall tires I prefer the 4.10s

Nope, I’m running the facet electrical fuel pump.

When I recorded these clips I didn’t plan on turning them into a video. Check out the other video of it titled 1973 7.3 L review, it goes more in depth. The 7.3 idi turbo is way better than the old 360 fe. 20mpg on diesel is better than 8mpg on gas, more power, more reliable

Thank you!

It did ok, but was very slow and got poor mileage

None of my propertys have a shed on so i been in snow and dirt for the last almost 15 years working on stuff lol

Thanks it sure did! I feel I can confidently do anything with this truck

@@Andrewj2152 glad to help. lol

In one spot I did. On the passenger side to make room for the turbo down pipe

@@Andrewj2152 did you cut the floor pan too?

@@dylanmartin1825 no I did not. Just a 2 in body lift

Around 4:13 in the video you can get a good look at them. I basically used the stock fe mount towers and cut the tops off at an angle, then I welded the 7.3 idi mount plates to them. To do that I had the mount plates bolted to the motor, and I held it roughly about where it is and slowly took material off until it got where I liked it.

@@Andrewj2152 that's a great idea thanks for the quick response

@@henryfreeman4017 your welcome, I did upload a good video of it driving. It has exceeded my expectations.

I’m using a champion 4 core radiator! Thank you

@@Andrewj2152 thanks for the reply! Does it fit the existing radiator support or did you have to modify it?

It fit the existing radiator support. No modifications necessary! My only complaint so far is it is not adequate still for my diesel motor. But this radiator will work just fine on a gas motor. I’ve found out that stock 91 f350s with the 7.3 idi hold 8gallons of coolant, I’ve got a capacity of around 6 gallons

@@Andrewj2152 good to know, thanks. I have a 76 highboy that I'd like to put an IDI in and I'm just trying to decide whether to do an engine/trans swap into my truck or do a dentside body swap onto an IDI frame.

I’m very happy with my swap, basically nothing on my truck is original. If you have noticed I now have superduty axles under my truck. There is not much left that I want to do to the truck, I would like to put in a new windshield, probably a large aero tank under the bed, and fix the cooling problems.

Thanks!

The truck is a 1973 Ford F250 4x4. The motor and transmission is out of a 91 ford f350

@@Andrewj2152 what about the original Engine that is have

@@porkypig738 it was a 360 fe

@@Andrewj2152 is also a Big Block

Yes it was, now it’s a 7.3 idi turbo diesel motor that has way more power, and gets double the mpg. And is way more reliable check out the recent videos of it it’s quite the machine

I’d say so too! Check out my latest video on it, you can see me test it out pretty good!

@@Andrewj2152 I looked to see if you had another video on it but I didn’t see one. Send me a link to it if ya don’t mind and I’ll for sure check it out.

@@jimsmirh2406 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-4XiRcm7Kk9E.html