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Old 06-07-2021, 05:19 PM   #1
New Member
Join Date: Jun 2021
Posts: 2
B3.9-p aka 4b3.9

I found the bus of my dreams.
2003 BlueBird 35 foot (72 passenger) with extra storage bins.
Alison MD3060

Cummins B3.9-P?

It drives a bit sluggish as my first impression, but it is the first bus I have driven.

Is 110 HP enough?

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Old 06-08-2021, 12:20 AM   #2
Bus Crazy
Join Date: May 2018
Location: topeka kansas
Posts: 1,778
Year: 1954
Coachwork: wayne
Chassis: old f500- new 2005 f-450
Engine: cummins 12 valve
Rated Cap: 20? five rows of 4?
3.9 or 4bt

Are you certain? this does not sound correct in a 72 passenger bus......
where are you reading the engine information from? do you have pictures?

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Old 06-13-2021, 01:50 AM   #3
New Member
Join Date: Jun 2021
Posts: 2
ESN truncated

OK so I found the ESN on Blue Bird's decoder:
Unit Dashboard | Portal

After creating a service account with Cummins and attempting to link the ESN I found that the ESN field was 1 digit short. I was looking at the wrong motor.

I actually found another Bus in much better condition and we are working to purchase it now.

Details to follow.
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