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Old 05-08-2019, 04:37 PM   #1
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Power rating, comparing T444 to T466

Hello,
I am a noobie. I am looking at buses for sale. I am planning on towing my jeep on a trailer. I have read that the 466 has more power, my question- is how would a 29 ft with 444(7.3) compare to 65ft passenger with a 466 being as the 7.3 is about 10 foot shorter.

Also I currently have a 96 Ford pickup with a 7.3. I have added a 6 position chip and a 4" exhaust. This gave me a good boost of power. Are there any after market products for the IH 7.3? I have read about the motor and the differences, I am assuming the IH 7.3 may have a different ECM then the Ford and Ford after market products may not work.


Any opinions would be helpful.


Thanks
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Old 05-08-2019, 04:48 PM   #2
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Posts: 12,012
Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
the DT466 is an inline 6 and the preferred method for towing as I-6's have much better low end torque than the 444E..



I have a DTA-360 (smaller cousing to the 466) in one bus and a 444E in another... I have the computers turned up in my 444E, whereas my 360 is mechanical and stock..



the bus with the 444E is good highway runner, but for pure brute that DT-360 has the better low end torque... even in a heavier bus, being smaller, and being all stock..


the 444E is a fine engine.. I drive mine all over the country.. its in a 6 window short bus... but I dont tow with it.. having it turned up I cruise the hills and flats just fine..



the big thing you need to pay attention to for your own self is transmissions.. either get a Stick.. or get a Lockup automatic (MT-643,1000 series, 2000 series) stay away from the AT-545 for towing esp long distances and in the mountains..



the electronic engines came in many ratings.. T-444Es were sold from 175 HP up to 250HP... DT-466E's were sold the same way... mechanical DT-466s also came in v arious ratings from i believe 180HP up to 250HP..



there is not much aftermarket support for the Navistar COmputers... there are versions of the software floating around to crank the engines up.. there are also hardware differences between the various ratings.. so crank the computers with a purpose and a Pyro gauge. befoere just going bonkers..



-Christopher
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Old 05-08-2019, 04:49 PM   #3
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Year: 2000
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Chassis: International 3800
Engine: 7.3L 210HP Turbo Diesel T444E
Rated Cap: 28 + 3 wheel chairs.
I have the 7.3L 210HP V8 Turbo diesel (444e) in my 28 foot bus - and I flat tow my Subaru with no issue. It gets up hills - but not fast. I don't see much change towing the car or not towing the car. So the engine works for me. I get about 10-14 MPG towing the Subaru.

I hope that helps.
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Old 05-08-2019, 05:36 PM   #4
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Join Date: May 2009
Location: Columbus Ohio
Posts: 12,012
Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
Quote:
Originally Posted by Dog Rescuer View Post
I have the 7.3L 210HP V8 Turbo diesel (444e) in my 28 foot bus - and I flat tow my Subaru with no issue. It gets up hills - but not fast. I don't see much change towing the car or not towing the car. So the engine works for me. I get about 10-14 MPG towing the Subaru.

I hope that helps.

you also have the allison 2000 trans too
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Old 05-08-2019, 05:47 PM   #5
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Chassis: International 3800
Engine: 7.3L 210HP Turbo Diesel T444E
Rated Cap: 28 + 3 wheel chairs.
Quote:
Originally Posted by cadillackid View Post
you also have the allison 2000 trans too
It seems to be a great transmission! Suitable for all my driving needs!
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Old 05-08-2019, 05:53 PM   #6
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Join Date: May 2009
Location: Columbus Ohio
Posts: 12,012
Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
Quote:
Originally Posted by Dog Rescuer View Post
It seems to be a great transmission! Suitable for all my driving needs!

its a great transmission... I have its 6 speed cousin in mine and it rocks...
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Old 05-08-2019, 06:33 PM   #7
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Good info

Thanks, for the info. That does make sense the 6 has more low end torque. I have been going through the forums here reading about trannies also.

Thanks again.
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