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10-10-2019, 03:16 PM
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#1
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New Member
Join Date: Oct 2019
Posts: 4
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62 c60 with 8.3
I'm going to look at an 8.3 with an Allison behind it tonite. Are there any tags or identifying marks I can look for to make sure this is an 8.3 and Allison? It's supposed to be out of school bus and has complete wiring harness.
Thank yoy
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10-10-2019, 04:19 PM
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#2
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Bus Geek
Join Date: May 2014
Location: West Ohio
Posts: 3,834
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There should be a data plate on the front gear cover by the injection pump.
That will give you a bunch of info like displacement, model #, serial #, advertised power, etc.
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10-10-2019, 05:13 PM
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#3
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New Member
Join Date: Oct 2019
Posts: 4
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Is there anything on the trans?
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10-10-2019, 05:18 PM
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#4
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Bus Geek
Join Date: Dec 2016
Location: Weeki Wachee, FL
Posts: 3,056
Year: 1997
Coachwork: Bluebird
Chassis: TC2000 FE
Engine: Cummins 5.9
Rated Cap: 72
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The transmission will have a plate also. It's likely it's covered in dirt.... But with a little soap and water you should be able to get the model from it.
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10-10-2019, 05:44 PM
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#5
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New Member
Join Date: Oct 2019
Posts: 4
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Is there a website I can use to decode these?
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10-10-2019, 05:46 PM
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#6
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Bus Geek
Join Date: Dec 2016
Location: Weeki Wachee, FL
Posts: 3,056
Year: 1997
Coachwork: Bluebird
Chassis: TC2000 FE
Engine: Cummins 5.9
Rated Cap: 72
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Cummins and Allison both have the ability to find specs based on the unit's serial number. If you can read the serial number you can probably read the rest of the data plate though!
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10-11-2019, 01:25 PM
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#7
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New Member
Join Date: Oct 2019
Posts: 4
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It's a 1992 8.3 with a mt643 trans. The truck has a 2 speed rear, with 7.2/ 5.87? Gears. Is this rear end going to work this engine/ trans? If not,What gears should I look for?
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10-11-2019, 02:47 PM
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#8
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Bus Geek
Join Date: May 2014
Location: West Ohio
Posts: 3,834
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Excellent engine, excellent trans, but a terrible rear gear.
Top speed will be about 50 mph with it.
Depending on cost, it might be worth keeping based off the engine and trans, and then swapping the rear gear for something more highway friendly. You'll want something in the 3.xx with that combo to cruise at 65 correctly.
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10-11-2019, 02:57 PM
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#9
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Bus Geek
Join Date: Sep 2014
Location: Eustis FLORIDA
Posts: 23,829
Year: 1999
Coachwork: Thomas
Chassis: Freighliner FS65
Engine: Cat 3126
Rated Cap: 15
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Quote:
Originally Posted by Jener
It's a 1992 8.3 with a mt643 trans. The truck has a 2 speed rear, with 7.2/ 5.87? Gears. Is this rear end going to work this engine/ trans? If not,What gears should I look for?
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looks like the rear has low or super granny low.
this wouldn't be a good rear end on the interstate.
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10-13-2019, 11:26 AM
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#10
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Bus Geek
Join Date: May 2016
Location: Eastern WA
Posts: 6,404
Year: 2002
Coachwork: Bluebird
Chassis: All American RE (A3RE)
Engine: Cummins ISC (8.3)
Rated Cap: 72
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An 8.3 and 7.2:1 rear gears?
Where they hauling fat kids up Pike's Peak?
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10-14-2019, 08:49 AM
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#11
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Bus Geek
Join Date: May 2014
Location: West Ohio
Posts: 3,834
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Quote:
Originally Posted by PNW_Steve
An 8.3 and 7.2:1 rear gears?
Where they hauling fat kids up Pike's Peak?
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LOL
He has 62 c60 in the title so I imagine the bus is a 1962 C60 and it originally had a gas engine that someone swapped with a 1992 8.3/mt643. That would explain the 2 speed rear axle with those gear sets installed.
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10-14-2019, 11:01 AM
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#12
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Bus Geek
Join Date: May 2016
Location: Eastern WA
Posts: 6,404
Year: 2002
Coachwork: Bluebird
Chassis: All American RE (A3RE)
Engine: Cummins ISC (8.3)
Rated Cap: 72
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Quote:
Originally Posted by Booyah45828
LOL
He has 62 c60 in the title so I imagine the bus is a 1962 C60 and it originally had a gas engine that someone swapped with a 1992 8.3/mt643. That would explain the 2 speed rear axle with those gear sets installed.
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It struck me as odd.
Get the rear gears somewhere in the realm of reality and you will have a classic with an awesome drive train.
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