DT360 Performance Questions

badass76ford

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I have a 90 IH 4700 box truck and am getting ready to do a dt swap into my 93 in my sig. But im wanting to do engine upgrades (as much as i can) while its out of the truck, i am planning on making between 400 and 600 hp and was wondering what was max boost pressure before studs (if they even make studs) and what turbo options i would have as far as something mostly stock off of something else. Any info would be appreciated.
 

nevrenufhp

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Before head studs, 60 pounds is comfortable. There are sled pullers that run 100+ pounds on stock head bolts. There are places that make the studs. It has 26 huge head bolts.
That's also at the point of swapping out the pump to a P-pump. The old MW or A-pump they have on there arent very performance friendly. You can get there with some big factory injectors and some pump recalibrating. A 400+hp turbo off something else? How about something like compounds, but keep your stock T04? Then, just add something cheap, like an HX50 or 60 off of a Cummins. One big turbo is going to lag pretty bad.
 

badass76ford

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Thanks for the reply. BTW do you have any idea how much i should overtorque the stock bolts just to be safe. I'd really like to touch 60 psi, and was wondering how far a hx40 would get me without over spoolin the thing. Also since you seem to have a fair knowledge of these engines what are my max egts going to be pre-turbo and what is compatable between these and 466s? Again thank you for the info.
 

nevrenufhp

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Thanks for the reply. BTW do you have any idea how much i should overtorque the stock bolts just to be safe. I'd really like to touch 60 psi, and was wondering how far a hx40 would get me without over spoolin the thing. Also since you seem to have a fair knowledge of these engines what are my max egts going to be pre-turbo and what is compatable between these and 466s? Again thank you for the info.
How much to overtorque? Stock is 165pounds, and that's pretty tight. Most tractor pull guys dont give up trade secrets, so my best estimate would be 185.
One thing to keep in mind, is these engines flow a whole lot more air than a typical Cummins 6BT. The boost number will be lower for a given hp rating. If you're trying to just get 60 pounds of booost, it's going to be a rather big turbo, or 2. You can get 4-600hp from an HX40, but it's running it on the ragged edge. Try one off a 6CT in an RV(higher hp rating). it'll bolt up pretty easily.
Max EGT is a relative term. For sustained EGT, the max should be 1300-1350. For a drag race, you can spike it in the 1800 range for a few seconds. if you do an inframe overhaul, and get the steel pistons, then you can get it scorching hot(2000 spike for several seconds).
I dont remember what exactly is swappable, but the water pump, injector pump, injectors, timing gears, front & rear covers, block to bellhousing adapter, and turbo are (off the top of my head).
 

badass76ford

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wow you sure do know your stuff about the dt engines thanks alot for the quick reply too. My engine was rebuilt by international in 2008 and has 26000 miles on it, would it have the steel pistons in it or is that strictly aftrmarket? And do you know of anybody finding a way to adapt these to any 4wd transmissions yet? Mine has the spicer 3053a overdrive behind it and im kind of stuck on making it 4wd, any suggestions?
 

nevrenufhp

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For those, the steelies are aftermarket. On a 466, they can be part of an inframe for a hi torque rating.
Yes, you can adapt an IH to a Ford ZF6 or 4R100. There's a guy on powerstroke nation forums, and a couple other forums. He worked with his local machine shop to make a few extra copies of his adaptor. Look up Pipewhiner, he did a DT360, and it runs really good! Even made a sled pullin video. The DT's can make a mockery of a Cummins 6BT. :sly
 

badass76ford

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Ive read and reread pipewhiners thread and just cant accept the prices of carsons stuff im also following swamp rats dt build. As far as divorced transfer cases go im kinda stuck with a 205 on that and they will never handle the torque i plan on making, also they tend to buck under severe load when used in a divorced application.
 

badass76ford

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I really like swamp rats idea too about using an allison 1000 trans and transfer case out of a 01 duramax. My only prob with that is, how is he going to attach the TC to the dt flexplate with correct spacing. And ive checked on the allison trans and transfer case combo around here before and the are very pricy not to mention the cost of rebuild and supporting mods. Is there any way to mate a spicer trans to a transfer case or maybe use another med duty truck trans with a transfer case already mounted to it?
 

hesutton

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I'm very slowly collecting parts for a DT466 repower of my F250. Going for a higher power target (800-1000), but I too was disappointed with t-case options. But, I've decided on an SCS gearbox for mine. $$$$ but, they have not had a failure on rigs more powerful than I plan on building.

Heath
 

swamp_ratt

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Here's my exact setup... 5x.020 contagious diesel injectors over a contagious diesel 500cc p7100 pump with no fuel plate, hx52/ht4 compund turbos pushing 100psi, hardened pushrods and 110# springs, allison 1000 6spd auto trans with np263xhd transfer case out of an 06+ duramax with an allison 2000 bellhousing (this setup is 100% bolt up to the dt360, 466, 530 and MANY more engines) I am also running an 01 dmax aam 1150 rear axle. You would be better suited for a 5spd allison from a dmax as you can easily buy a stand alone harness whereas the 6spd harness in mine is a LOT more work and custom wiring! My setup on the motor should get me around 900 at the wheels WITHOUT over torquing stock head bolts! Any questions feel free to get ahold of me. I can guide you 100% on your install! Not goin to be easy though! Hypermax has done 300psi with stock head bolts
 

swamp_ratt

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Also, I have a mint 5spd Allison with tcm for sale...

Hesutton... Good luck fitting a 466! My dt360 was a LOT of work to get it to fit period! A 466 is 7 inches longer! It will NOT fit without severe firewall mods and radiator relocation! If you put a 466 in without firewall mods, the front of the valve cover will touch the radiator core support! Might as well scrap that idea now before you cut everything up and realize it won't work! I did enough custom fab work to get a mechanical fan squeezed in front of my 360. Had to source some oddball non related parts to make it work!
 

badass76ford

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Thanx alot swamp ratt for the info. I just cant believe with all the SAE2 trans setups out there that there is no way to have a manual with a married setup from a medium duty application. I just dont want to have to put 3000 into building up the allison when i could just work on a custom manual setup,any ideas?
 
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swamp_ratt

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Your best bet for a manual Trans setup is get ahold of Carson stauffer diesel service and have him make you an adapter plate and flywheel for a ford zf6 manual trans. And the dt series engine uses an sae3 flywheel housing
 

swamp_ratt

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Also, if your only looking at 4-600, a stock Allison 1000 will handle that! I would do a converter and shift kit and you'll be plenty good. Ill be running a stock ally 1k for a while behind my 900hp motor
 

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