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Old 09-16-2015, 07:24 AM   #1
ArmyChap's Avatar
Join Date: Sep 2014
Location: Fort Riley, Kansas
Posts: 42
8.3 Cummins & Allison 3000. Questions.

I'm looking at a BlueBird RE with an 8.3L Cummins and an Allison 3000. Since I'm not much mechanically inclined, I thought I'd poll the collective wisdom of the forums:

1. From what I can tell on the forums, the 8.3 Cummins is a solid engine. The one I'm looking at has 190k miles on it. What issues can I expect?

2. Is this a good combination with the Allison transmission? How can I know the number of gears and the ratios? (I've asked for pics of the data plates, but haven't received them yet).

3. It's a UT bus, from the Salt Lake area... anyone got experience with UT buses? Please advise on potential for rust!
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Old 09-16-2015, 08:29 AM   #2
Bus Geek
Tango's Avatar
Join Date: Mar 2011
Location: Houston, Texas
Posts: 4,341
Year: 1946
Coachwork: Chevrolet/Wayne
Chassis: 1- 1/2 ton
Engine: Cummins 4BT
Rated Cap: 15
Not that familiar with the 3000, but the rest of the package sounds good. That Cummins should easily be good for a half-million miles but that depends on it's history and maintenance. The best engine poorly maintained can turn into a boat anchor.

Is there any way you can get it's service records? Most school districts keep a very thorough mechanical history on each unit.

And as for Utah, my 1946 Chevy Shorty spent it's whole life there and was in surprisingly good shape. Mostly minor rust with a couple of exceptions that I attribute to the way it was built.
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Old 09-16-2015, 11:48 AM   #3
Bus Geek
Join Date: Aug 2011
Location: Stony Plain Alberta Canada
Posts: 2,939
Year: 1992
Coachwork: Bluebird
Chassis: TC2000 FE
Engine: 190hp 5.9 Cummins
Rated Cap: 72
The Allison 3000 is the same family as the MD3060. It may even be the 3060.

They are all great transmissions. There is no bad 3000 series Allison.

"Don't argue with stupid people. They will just drag you down to their level, and beat you up with experience."

Patently waiting for the apocalypses to level the playing field in this physiological game of life commonly known as Civilization
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Old 09-16-2015, 12:21 PM   #4
Bus Crazy
opus's Avatar
Join Date: May 2010
Location: Montana
Posts: 1,614
Year: 1995
Coachwork: Blue Bird
Chassis: All-American R/E
Engine: 8.3 Cummins
Rated Cap: 72
Ask to take an engine oil sample before you buy it.
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Old 09-16-2015, 01:29 PM   #5
Bus Nut
Join Date: Feb 2012
Location: Salt Lake City Utah
Posts: 914
Year: 2000
Chassis: Blue Bird
Engine: ISC 8.3
It's.. probably a good package? We do salt our roads here, though not so much as the "rust belt" salts theirs. Send me a PM if you want me to go look at it for you (I'm assuming it's still in the Salt Lake area, not only "from" the area).
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