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DT466 replaced with DT436 in a school bus?

I

IsonDragon

New User
A decade old thread brought me here hopefully I can get some Info.
I found an international school bus which original engine DT466 was replaced with a DT436.
I understood that a tractor engine would have highest torque at low RPM's and also that there are some mechanical differences. But what are the differences in mph? Would it have a very low max mph? or ability to withstand long range trips. Would it not be able to handle highway?
Thanks for any replies.
 
Does the transmission have overdrive? Do you know the rear end ratio? What is the ratio of the
highest gear in the transmission, whether overdrive or not. The DT 436 engine should have
sufficient horsepower/torque to move the bus down the road at highway speed, but if the combination
of transmission ratio and rear-end ratio do not put the engine in the right part of it's power band
at highway speeds it may struggle.
 
By the specs, a 436 has 145 HP at 2,600 rpm, the 466 has (up to) 300 hp @ 2,200 rpm, I assume that's with a turbo. But looks like both are in the same RPM range, though I am not a diesel expert.

No reason to think it could not withstand extended high RPM use. A tractor is always pulling, where a bus gets a coast and cruise break.
 
No reason it wont work the Diesel engine in my trucks run
about 2500 rpm same engine Is used in tractors and
excavators and tug boats and single axle semis . Your gear
ratio will be the deciding factor
 
I asked the owner he straight up said it's a DT436 Engine.
Having a 466 into a 436 block means putting the cylinders and the rest of the 466 components into the 436 block?
I am very ignorant about engines and machines thanks for the replies everyone
 
If the fuel delivery is the same. (Same
fuel pump) same turbo. Torque will be a
little less but horse power will be the
same.
 
My bet is you will never know the difference, and if you do need more like desieltech says a little
tweaking of the pump and yopu will have all you need.
 
Horse power will depend on turbo and injection pump setup.
The DT4xx share the same basic block and many components. Early blocks were 1 lifters, later truck 466s were 1.125 lifters and the really late ones were roller lifter.
Later + head is considered desirable as they are supposed to flow better.
Crankshaft stroke is different between the 3 sizes, 414, 436 and 466. 4.75, 5 and 5.35 respectively. Bore is the same at 4.3. Connecting rod is the same, piston pin height changes between the models.
I have found that the 466s out of combines and some trucks tend to have beat up rod bearings from the constant high rpm running. The 5 stroke in the 436 will take rpm better.
Ive seen 414s rebuilt as 466s, but they were restamped.
 
drove an International CO4070B 83,000 lb heavy perforator when I was in the oilfield. It had a 13 speed ranger with a 4 speed auxillary. truck
would run 70-75 until you went up hill then you had to grab some lower gears. Not a lot of guts but ran great!
 
Most likely it's a reman 466 engine built using a 436 block, and it has the truck engine injector pump so it will run and perform like the original.

Unless you can CONFIRM that the engine was pulled from a tractor with the tractor injection pump and installed in the bus. However if you have no idea how it got there, the simplest explanation is usually the correct one (i.e. it's a reman 466 in 436 clothing)
 
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