88' F350 460 to 300 six
 

Hello Everyone,

I picked up an 88' F350 2WD cheap. It has a 460/C6 combo.

https://cimg3.ibsrv.net/gimg/www.for...9a10f6ce44.jpg

My immediate plans are to swap in 300 six with either an E4OD (updated) or a M5OD (short term).

The reason is...I'm averaging 8.6 MPG with the 460 and really don't need that kind of a loss of fuel mileage for everyday driving. Plus, I just always liked the 300 six...and this is coming from a Chevy guy...LOL!

Here is a 300/E4OD out of a 94' F150 I picked up from LKQ
https://cimg1.ibsrv.net/gimg/www.for...161f347ffd.jpg



https://cimg0.ibsrv.net/gimg/www.for...9dcfdf8e70.jpg
Here is the "Six" on the stand...getting ready to decrease.

So getting into this kind of swap...My question is will the 300 six frame perches work on a F350 frame that came off an F150 frame(donor Truck)?

Not sure if the perches will work. I suspect you will have to drill some of the holes.
Wouldn't have been easier to swap an E4OD in place of the C6 and maybe go to a 3.31 gear ratio (from a newer 10.5)?

In quick summary........ the 6's, 302, 351's all share most of the same components including air filter box, etc....the 460 had it's own...... so you may have to address each component.

That what I'm hoping for, is just some minor mods if it comes to that.

There is really nothing to do to improve upon the fuel mileage of a 460 engine size. Laws of physics come into play when large cylinders of an engine have to be filled and ignited. Nothing wrong with that but I don't think there is anything around it.

When I was young, I wanted my trucks to have big engines, lifted and loud. as I get older...I'm going the opposite direction..LOL!

I do have the accessories including the AC compressor and air filter box. So, good to go as far as that. I am tempted to convert the engine to carb but, still working on the fuel injection harness to swap in.

On a side note, I did look up a power steering pump for the 460...it does have a different part number then the 6...so that is being addressed.

​​​​​​ That E4OD bolted up to the 300 six will not bolt up to the 460. The bellhousing bolt patterns are different. Not to mention he would likely need to source out an EEC-IV processor from a 460/E4OD equipped truck to make it work.

Obviously get the correct E4OD.
Yeah, it would require changing out wiring, but not to the same degree as a 4.9 swap.

Been decreasing the engine and gave a shot of Ford Grey paint. https://cimg9.ibsrv.net/gimg/www.for...c080644f90.jpgAll of a sudden, something jumped out Or I should say, a couple of cracks became exposed. Look at the midway down the block under the 2nd and 5th freeze plugs. Looks like a couple of cracks!

https://cimg4.ibsrv.net/gimg/www.for...43a7c0da3c.jpg
Here's one under the 5th freeze plug.

https://cimg7.ibsrv.net/gimg/www.for...6b830b7e03.jpg
Here's another under the 2nd freeze plug.

I filled the block with some water and no leaks. When I was pulling the engine, these cracks were hard to find and didn't see any rust trails like one would find with coolant leaks. So I'm very dumbfounded.
My guess is they ran straight water through it without antifreeze and and when a sub-freezing day came the water froze. I really never heard of a 300-6 block cracking but if water freezes, it doesn't matter what you have, it can destroy your engine.

So, I might make another trip to the junk yard and grab a short block. Because the cylinder head has no "air tubes" like most other 300-6's do.

Dang it!

Swap
 

Hi,
I am close to finishing swapping a 4.9l into a 1997 F-350 4x4 that originally had a 5.8l and I kept the original E4OD tranny. I think the frames are similar but not sure but the 4.9l mounts should work and just bolt in mine did. You will need a 4.9l PCM from anything 92' to 94' and if you use an E4OD you will need one that had one of those along with the 4.9l engine. You will more than likely need a o change the underhood wire harness, I had to the pinouts were a little different and the fuel injectors had no power until I made the swap. I would suggest if the truck is already a manual tranny to stick with that as you will have more harness issues to go from manual to auto. Also be aware that after 94' Ford changed the E4OD and moved some electronics from the tranny to the PCM so do not use a 94' PCM with a later tranny,

Brian

Well, it's been a while since the last post but I pressed ahead with the engine swap.

I am still using the engine here with the two cracks...Why? My machinist advised me to "JB" weld the cracks. He stated JB weld is more then enough to secure engine block cracks so as long the engine isn't seeing a hundred pounds of boost. So I went ahead with the ideal to at least try it.

First by roughing up the surface area...https://cimg6.ibsrv.net/gimg/www.for...8ce02ef7eb.jpg
https://cimg7.ibsrv.net/gimg/www.for...bcd7c70321.jpg


Then took some strips of fiberglass and impregnate them with JB weld because fiber reinforce composite is much stronger...and applied it to the block.

https://cimg4.ibsrv.net/gimg/www.for...cba10c4c55.jpg
https://cimg5.ibsrv.net/gimg/www.for...820cfaf999.jpg


Of course potential problems wouldn't be complete without rust int he cylinderhttps://cimg9.ibsrv.net/gimg/www.for...6bbeba37bc.jpg
Just took out the piston and honed the cylinder...I'm thinking a rebuildable short block is in order.

https://cimg7.ibsrv.net/gimg/www.for...2f2e25176c.jpg


https://cimg3.ibsrv.net/gimg/www.for...69db80f918.jpg
Long block assembled and ready for install.

Now it was time to remove the 460/C6 combo.https://cimg6.ibsrv.net/gimg/www.for...1314ff8985.jpg
https://cimg8.ibsrv.net/gimg/www.for...bb0baad450.jpg
https://cimg9.ibsrv.net/gimg/www.for...efdb7e92f1.jpg

The harness wasn't hard at all for this particular one just came unplugged from the engine bay harness. Not like that on all of them.

How does the engine run? Happy with the swap?

I know it's been a while...how did the swap turn out?

It's been a while since I posted but here are the updates.

The 460 was sold off to a Craigslist junkie who used it to empower his 1970's Ford. He's loving it.

Now that the 460 was removed, I got to work on frame mount modifications. Had to clear the rud that acted as the protective coating.
https://cimg6.ibsrv.net/gimg/www.for...d8f41f031a.jpg


The 460 frame mounts were mounted behind the crossmember. The 300-6's mounts will be forward, right on the crossmember.

The driver side 460 mount was riveted while the passenger side mount was bolted. I guess the driver side mount was riveted due to the fact to handle the torque of the engine during the life of the truck. So,
https://cimg5.ibsrv.net/gimg/www.for...bdfb3c3a76.jpg
I left it and removed the passenger side mount. The frame mount for the 300-6 was installed on the drivers side as you can see.



Here are the frame mounts for the 300'6, got em' from a 94 F150...and they pretty much bolted on. Had to drill ONE hole on the driver's side.
https://cimg4.ibsrv.net/gimg/www.for...6550312c5b.jpg



The engine was fit tested and everything lined up great, like it was factory. So on to mating the engine to mating the engine and trans and installing them.
https://cimg7.ibsrv.net/gimg/www.for...dafa67e3b9.jpg



https://cimg1.ibsrv.net/gimg/www.for...98f1b15e49.jpg
https://cimg3.ibsrv.net/gimg/www.for...ca652e7bb0.jpg
BTW, the E4OD was rebuilt and updated. It is a 94' transmission so it lacked the updated pump, Overdrive carrier bearing and misc small stuff. Being that it came behind a 300-6 out of an F-150, it lacked the number of clutches vs a bigger V8.

I took no pictures but the E4OD was over hauled with updated pump, carrier bearing, additional clutches, steel planetarys vs aluminum and a Trango "Tugger Kit".