thanks. Im pretty lost at this point.

Ill add a lil backstory to my dilemma --
New to me 08 6.4L 4X4 F550 Host Motorhome. Sick rig. Stoked.
Thought i did my homework on the purchase. It had a new Ford Reman. 6.4 installed by a professional?? shop 8k mi. prior to purchase. Prior owner overheated original motor on hwy and kept driving it still it blew. I contacted the shop that did the work and discussed the replacement, studied up on their reputation- all seemed legit. Prior owner spent $20K replacing it. All service records. It never had a regen. cycled thru it after the replacement, due to a diet. I was hoping that was a great thing and solved many of the 6.4 concerns. SO VERY WRONG!

Owned it for less than 4K miles. Oil and filters changed the day i bought it. drove amazing.
I blew #7 injector out of the block on the Hwy 400mi. from home. never threw a code, no prior performance changes. Ran like a top till poof. It still started and ran VERY rough post incident, after adding 2 gal. of oil. I was able to pull it off the hwy to get a tow to a shop.
Its at a shop, one that came recommended highly for the area by people i know. Hopefully they are honest.
Shop is pulling the motor atm, then we see what the real damage is. Its a Class C camper so no body off. Motor came out thru the front.

Not in a position currently to do the work myself, though id love to learn the 6.4 and VALUE all aspects of the DIY build. Just dont have the time or space to tear this rig down atm. And its 400 miles away in a shop.
Im a Toyota guy and been wheeling my whole life, built a number of Toyota engines and done plenty of crawler fab work. My garage is full of tools, i normally love this ****.
Im no baller so cant throw the bank roll at it. But im here so 😂😂🤙

As i stated earlier.
Considering worst cases-
Replace motor with Either a Choate or KDD. Reliability and longevity is my goal. We tour Baja deep, and i want to know im solid, and be able to fix a problem if it arises.

@Chaote has the Workhorse 6.4 on a pallet ready too go.
@KillDevilDiesel seems like they may have quite a wait time, im in process of discussing options with them. But they also sell a NEW block- if mine has damage and won't qualify for a core. That is a huge plus.
Anyone have legit cautions against either of these builders? One is newer to scene, one has a solid rep.


gonna start studying up on the Fummins possibility. Your thread will be the start!!

If i install a beauty of a 6.4L built strong, am i gaining anything in a Cummins? Or just complicating a reliable platform?
Cummins motor choice? Which one is best in power and reliability? Transmission adapters or am i going there too? The 5R110W seems like it has a decent reputation.

cost would be my other concern. Comparable to the new 6.4? remembering that ive already paid a shop to remove/disassemble an engine.

Id love peoples opinions on 6.4 builders, Fummins swap?

maybe i should start my own thread? Nothing better than a bunch of threads about the same situation

Consider an engine conversion. I did a full Cummins conversion, by myself, at home , working just on the weekends, in less time that it takes to get a replacement 6.4L long block delivered.
Couldn't be happier with it. Its such a popular conversion that most parts are off-the-shelf and very little actual custom work needs to be done. The 08-10 trucks are great in all areas except reliability, a Cummins fixes that issue.

Here's a link to a build thread that details most of the conversion process.

2010 F250 12 valve swap

Recently I traded around with a family member and acquired a pretty nice 2010 F250 four door 4x4 auto (the family member I got the truck from bought it brand new, so I know most of the history and at least who to blame). The 6.4L PSD in it most likely has a cracked piston (it runs, but it's...

www.cumminsforum.com

View attachment 779525

View attachment 779526

badass build. Great read.
Looked like a lot of work to get the small stuff dialed, but you consistently plugged away.

my favorite reoccurring quote of yours 😂😂 "Another of what I assumed would be a simple, little, easy job turned into a much longer , more time consuming, job than I ever thought it could be." --- story of my life right now.

Not gonna lie, at this moment i do not have the resources avail. to pull that off myself. Its Winter and It is coming! And i live rural middle of no where without any resources to help out.

I would be interested in some form of swap, if it was reasonable to have a shop perform. But that seems unlikely??

Here's a link to a build thread that details most of the conversion process.

2010 F250 12 valve swap

Recently I traded around with a family member and acquired a pretty nice 2010 F250 four door 4x4 auto (the family member I got the truck from bought it brand new, so I know most of the history and at least who to blame). The 6.4L PSD in it most likely has a cracked piston (it runs, but it's...

www.cumminsforum.com

 

gonna start studying up on the Fummins possibility. Your thread will be the start!!

If i install a beauty of a 6.4L built strong, am i gaining anything in a Cummins? Or just complicating a reliable platform?
Cummins motor choice? Which one is best in power and reliability? Transmission adapters or am i going there too? The 5R110W seems like it has a decent reputation.

cost would be my other concern. Comparable to the new 6.4? remembering that ive already paid a shop to remove/disassemble an engine.

Id love peoples opinions on 6.4 builders, Fummins swap?

maybe i should start my own thread? Nothing better than a bunch of threads about the same situation

Just google around the internet on Fummins swaps, there is enough out there to keep you reading for awhile. At the end of the day its a personal preference decision. The P-Pump Cummins 12 valve I chose is far more reliable that the 6.4L PSD (and much less complicated) , I seriously doubt anyone would even bother to argue about that. But any swap makes the vehicle custom such that your regular every day repair shop won't want to touch it.

I did the conversion 100% by myself (didn't even have someone to hold a flashlight), so it can be done. But it was a big time/ effort commitment.
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I would be interested in some form of swap, if it was reasonable to have a shop perform. But that seems unlikely??

Yeah, shops with do them, but it isn't cheap.

Diesel Conversion Specialist (DCS) , the company I bought the conversion parts from, does the conversion turn key in their shop.

Talking with a performance diesel shop in my local area (near San Antonio, TX) they said it'd be at least $15K in labor charges (no parts, just labor) for them to do a similar conversion.
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@Antonm @zidaro

Please continue this conversation in another thread. The cummins/fumins swap is well known with any amount of research and 3-4 big names make full on kits with everything. This PARTICULAR thread follows one persons expereince with a 6.4l. If you have issues/ your backstory please start your new thread so it can be continued there in a fresh thread not in the middle of another. This will help others find yours and not overshadow another longer thread keepings things way more organized for everyone.

 

@Antonm @zidaro

Please continue this conversation in another thread. The cummins/fumins swap is well known with any amount of research and 3-4 big names make full on kits with everything. This PARTICULAR thread follows one persons expereince with a 6.4l. If you have issues/ your backstory please start your new thread so it can be continued there in a fresh thread not in the middle of another. This will help others find yours and not overshadow another longer thread keepings things way more organized for everyone.

This PARTICULAR thread is titled " So I've blown my 6.4 Power Joke, Do I bother fixing it? " , so the discussion we're having is relevant to the topic. Which makes that option one possibility for any future someone that may be searching for the information under such a topic title, so it IS organized for everyone.
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Looks like the keyboard warriors got offended and deleted a few pages worth of useful information. Oh well.
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Looks like the keyboard warriors got offended and deleted a few pages worth of useful information. Oh well.

"Oh well" would be not needing to type that @Antonm, now you have the attention you need.

thread is literally the thought process of what to do when the 6.4 blows and needs replace. And so is every single sentence so far that i have added.

Maybe you are new to forums, or the internet, nonetheless lets not swim upstream.

 

Still don't see the need for the new thread, we were discussing the exact topic of the thread we were on. Why make a new one?
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rooster has picked his poison ( KDD 6.4) and is keeping that thread alive and in that direction
you helped zidaro and I agree with Heavy it is best to let that other thread live Cummins free since that ship has sailed for him

in other words this is a great topic and deserves it's own thread and I totally agree I would go cummins before the best 6.4 money could buy

 

True, Rooster picked a poison, but that poison hasn't shown up yet (that we know of ), and his truck is still sitting somewhere not able to move under its own power. So he still could go a different route. I know I would at this point, even if that different route were a 6.4 from another supplier.
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So. back to the conversation about replacing a 6.4

Contacted KDD. very pleasant and helpful discussion. However-- lead time for any short/longblock build is no less than 5 months out atm. FYI.
Kinda rules out that avenue if i have any need for a drivable rig in the near future as most do

 

Damn. Words are flying, and $h!t. All I wanna see is someone put a built 6.0 in a 2008-2010 PS. I believe in you all, lol.

 

Aint no one swapping a 6.0l in it lol... They usually try and bulletproof the 6.4l with $$$ or join the Cummins fanclub for $$$$$$ or more commonly get it running enough to sell and dump it on some naive new owner and they join a forum like ours looking for help lol.

 

hmm ,, if I had a perfectly good 6.o engine would i put it in a blown up nice bodied 6.4 ?

,, I might but I still think if i had a cummins right next to that 6.0 that would win

 

@Heavy_GD @JustinOOO9 spare him guys, its too late. The p-pump disease is already coursing through his veins, contaminated his brain. The cummins community has him now...

 

Hey, the man wants a Frankenstein monster truck. I just hope he knows enough about it to do work on it himself. I know it's not an unheard of mod, but to my knowledge there's much less resources out there for the swaps than any of the straight vehicles.

I know I'd be lost without help on the advanced stuff, and while people might say it's more reliable, that doesn't mean that nothing will ever come up...

 

Though if he does it, I hope he posts updates and pictures as he goes.

 

Permission for a very blunt comment?

 

10 days in, sure why not.

 

Quoting a friend here so, give me some grace. I’ll clean it up a bit: “we have a 6.4 in our family. I would gladly lose the hair on my _ while taking a __ on the burning remains of that truck”.

I’m going to say I know very little about that power plant but do know a couple of other people who’ve made them reliable; one in particular with over 300k miles on the original engine. Maybe he has the secret sauce… He’s a confident, cocky b@st@rd with a middle finger sticker on his back window. Pulls up to stoplights with windows down blasting Def Leppard. Pulls a heavy fifth wheel behind it a lot and tows it everywhere. Think Tiger King with a 6.4.

It’s possible Def Leppard is in my iTunes library too. Doesn’t make my truck run any better though.

 

@6LiterTeter well if OP‘s build is correct then i would say 40+psi of boost below 160oil temp going up a steep freeway on ramp may have something to do with why his 6.4 took a dump.... Just like every 6.4, how you drive and maintain it determine how reliable it will be

 

@RandomForumGuy I definitely missed that. 100% with ya. Maintenance and DEF LEPPARD.

 

They like to brag and smoke out protesters but they instantly slow down and go into B mode when they get outran in a 6.4, It's been 3 cummins in the last week.

 

I bought a Choate 6.4 Workhorse Longblock yesterday 👹

 

keep us posted on the whole process please

 

i was wowed by shiny stuff on the website, they took my $$, and will be sending me a motor very soon 😂😂😅 Hopefully all the goodies that get bolted onto it last as long as the longblock should

i dont want to clutter up this Fummins thread with too much info on a badass 6.4 build that could deter some potential swapper from building a bastard child

 

Having had a 6.4 'pop' in my 08 KR I never would've considered a Fumblins swap ! My fabricator did his and it was uphill both ways barefoot in the snow. $3400 for the wiring harness and relay to adapt the 5.9 to all his Ford relays and gauges and instrumentation. No thanx ! The 5.9 I have in my dump truck has been a PITA since purchased. If it weren't for the Power Driven Diesel 400hp kit it'd have been dead long ago. UCF in Carlisle, PA will build you a 6.4 that's again a powerhouse and make it dependable. It's alot of fun to pass an empty 5.9 that's matted with a 6.4 in overdrive pulling a 17k trailer and EGT's @ 800 mark.

 

the difference is paying for it and doing it yourself.

If you buy everything the sky is the limit.

 

Understood GD but I spent $13,600 on the motor build. Stephen spent $10k on the Fumblins swap and because it wasn't plug & play lost 2 months of nights and weekends. He's a diesel mechanic by trade and still it wasn't the outcome he was looking for.

 

Dang it man... that is painful

 

Good call out… that said have You ever gotten surgery at the oral dental school? Or a hair cut at the beauty school?

 

Unfortunately no I haven't I do not know if they do extractions or implants but everything's possible in a college. I do have long hair I prefer to keep it long