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Old 11-05-2018, 08:38 PM   #11
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You would have to call around and see. Any modern truck garage should have this equipment and the software for these engines is free from International. Any International dealer can do this depending on if they are allowed to or not. Some dealers are iffy about stuff like this. Regardless it's gonna cost you a bill easily.
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Old 11-05-2018, 09:28 PM   #12
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Good to know. Thanks, Johnny!
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Old 11-05-2018, 10:42 PM   #13
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EastCoast, the 6x "miles" was a typo on my end. I meant to say 6x windows. It has 107k miles. A 2000 with only 6,000 miles would definitely be suspicious!
Wouldn't be surprising if it were a newer one with the 6.0L. From what I've seen, most spent more time in the shop than on the road.
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Old 11-06-2018, 12:51 PM   #14
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I spoke with an International dealer in Houston this morning. They were actually very helpful and shared the list of chassis components they can see in the system + the serial numbers for a few parts (attached).

The bummer is it looks like the tranny is, in fact, an AT545.

The engine is a T444E as we suspected. Good but not great.

The tire size appears to be 22.5Ē with 6.75 DC rim.

Neither of us could make sense of the rear axel info on this sheet to determine the ratio. Can any of y'all decipher it?

The engine notes a governor: "ELECTRONIC ROAD SPEED GOVERNOR Electronic Road Speed Type; for Electronic Engines and Bus Models; with 55 MPH Default". Is this something that can be changed with a computer?

I plan to live in my bus full-time and road trip for at least a year. A week or two of boondocking or visiting friends/family followed by a day or two of driving to get from place to place. All over the West, hopefully.

I started to really like this bus but it sounds like the AT545 isn't the right tranny for that job and replacing a transmission isn't worth it, right?
Attached Files
File Type: pdf chassis components.pdf (151.2 KB, 14 views)
File Type: pdf serial numbers.pdf (122.7 KB, 1 views)
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Old 11-06-2018, 02:54 PM   #15
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The AT545 is not a bad tranny. It just is not ideal for mountain climbing and high speed interstate driving. Some member here have done cross country trips with this trans though. That road speed limiter can be changed.
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Old 11-06-2018, 03:43 PM   #16
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Quote:
Originally Posted by Chad1865 View Post
I spoke with an International dealer in Houston this morning. They were actually very helpful and shared the list of chassis components they can see in the system + the serial numbers for a few parts (attached).

The bummer is it looks like the tranny is, in fact, an AT545.

The engine is a T444E as we suspected. Good but not great.

The tire size appears to be 22.5Ē with 6.75 DC rim.

Neither of us could make sense of the rear axel info on this sheet to determine the ratio. Can any of y'all decipher it?

The engine notes a governor: "ELECTRONIC ROAD SPEED GOVERNOR Electronic Road Speed Type; for Electronic Engines and Bus Models; with 55 MPH Default". Is this something that can be changed with a computer?

I plan to live in my bus full-time and road trip for at least a year. A week or two of boondocking or visiting friends/family followed by a day or two of driving to get from place to place. All over the West, hopefully.

I started to really like this bus but it sounds like the AT545 isn't the right tranny for that job and replacing a transmission isn't worth it, right?
Man it really just all depends.
I'd want more than a 444E and 545 for interstates or mountains. Especially since out west they have REAL mountains.
You can do it in pretty much any bus. But some are much better suited for the task.
Me, I'd be looking for a bus with a 7+ liter straight six and trans with lockup.
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Old 11-07-2018, 02:28 PM   #17
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Quote:
Originally Posted by Johnny Mullet View Post
The AT545 is not a bad tranny. It just is not ideal for mountain climbing and high speed interstate driving. Some member here have done cross country trips with this trans though. That road speed limiter can be changed.
True, it's not bad, just maybe not ideal for what I'm looking to do. Good to know that some members have done cross country trips with it. I'll do some more digging on the forums.

Would I need to plug the bus's numbers into one of those calculators online to determine what speed the bus can safely go? Or is it safe to assume 65-70mph is fine?

Quote:
Originally Posted by EastCoastCB View Post
Man it really just all depends.
I'd want more than a 444E and 545 for interstates or mountains. Especially since out west they have REAL mountains.
You can do it in pretty much any bus. But some are much better suited for the task.
Me, I'd be looking for a bus with a 7+ liter straight six and trans with lockup.
Agreed, I am a bit nervous about taking this combo up some of the big steep mountains in Colorado or Montana.

By "straight six", do you mean V6? 6 window? Still learning the lingo around here.

My understanding is pretty much all the other common Allison trannys have lockups - the MT 643/4, MD3000 series, and the 1000 and 2000 series. Is that correct?

Thanks for the help!
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Old 11-07-2018, 02:41 PM   #18
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the MT-643 is a 4 speed Lockup trans (final drive 1:1)
the MD3000 series are 6 speed (most school busses only have 5) speed lockup trans.. 5th gear is 0.75:1 overdrive and 6th is 0.65:1 overdrive.
the allison 1000 is a 5 speed (pre-2006) or 6 speed (2006+) lockup Overdrive trans. 5th is 0.71:1. and 6th is 0.61:1


the allison 2000 is a 5 speed(pre 2006) or 6 speed(2006+) lockup Overdrive trans. 5th is 0.75:1 and 6th is 0.65:1


the MT-643 is a fully mechanical transmission.. the others are electronically controlled to various degrees.. (the MD3000 series are pushbutton shift.. no linkage for RND) the 1000/2000 series are electronically controlled but have mechanical shift linkage for gear ranging (RND)...



-Christopher
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Old 11-07-2018, 02:42 PM   #19
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Quote:
Originally Posted by Chad1865 View Post
True, it's not bad, just maybe not ideal for what I'm looking to do. Good to know that some members have done cross country trips with it. I'll do some more digging on the forums.

Would I need to plug the bus's numbers into one of those calculators online to determine what speed the bus can safely go? Or is it safe to assume 65-70mph is fine?



Agreed, I am a bit nervous about taking this combo up some of the big steep mountains in Colorado or Montana.

By "straight six", do you mean V6? 6 window? Still learning the lingo around here.

My understanding is pretty much all the other common Allison trannys have lockups - the MT 643/4, MD3000 series, and the 1000 and 2000 series. Is that correct?

Thanks for the help!
Yeah all have lockup except the 545.
By "straight six" I am referring to inline six cylinder engines as opposed to the V-8's. Straight 6 > V8.
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Old 11-07-2018, 02:45 PM   #20
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Engine: DTA360 / MT643
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the straight 6 engines typically have more brute force low-end torque vs the V-8 diesels.. the V-8s tend to gain their power on the high end and in a much shorter range.. the inline 6 engines are good for towing / hill climbing and prefer lower RPMs.. the V-8 diesels do good for MPG on the highway at a bit higher RPM cruise.. however they arent nearly as good when it comes to needing to climb steep mountains and pull heavy loads..



the Cummins 8.3 and the DT-466 variants have the ability to be rebuilt without removing the engine block from the vehicle...



-Christopher
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