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Old 10-02-2017, 11:22 PM   #1
Bus Nut
Join Date: Jan 2016
Posts: 252
Allison 2000 series vs. 3700

The Allison 1000 and 2000 series are about the same size, length and diameter. The 3700 is about 20" larger and bigger around. Is it possible to connect a 3700 to a 5.9? Does the 5.0 have enough power to turn a 3700?
pengyou is offline   Reply With Quote
Old 10-03-2017, 01:29 AM   #2
Join Date: Nov 2015
Location: Midwest
Posts: 2,573
Year: 2003
Coachwork: BlueBird
Chassis: TC2000
Engine: 5.9L Cummins
Rated Cap: '00
Yes, it has enough power to turn the transmission.

Might be a tiny bit overkill.

Rusty is offline   Reply With Quote
Old 10-03-2017, 06:26 AM   #3
Bus Geek
Join Date: May 2009
Location: Columbus Ohio
Posts: 12,810
Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
not sure why you would run it? I guess 7 gears is nice if you do a lot ofhill climbing and want to downshift alot. and allison 2500 school bus transmission is 6 and 6th gear gives you a better overdrive..

a 3700 series is likely going to be expensive to obtain and then you need a converter and adapter ring for your engine.. I dont know if the 5.9 was natively and sae2 or not.. I think a #2 flywheel housing is available. for the cost and effort needed to drop a 3700 in, id be more likely to drop a 1000 or 2500 in...
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