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Old 09-23-2017, 11:08 PM   #1
Skoolie
 
Join Date: Jan 2016
Posts: 133
Allison 2000 vs 1000

The Allison has a lower 1st gear and a higher 6th gear (second overdrive) Will a 40' re type d skoolie ever be able to take advantage of the 6th gear - maybe on flat land? With 4.11 gears in the rear, will this setup have enough power for starting up, especially pulling a 4,000 pound trailer? Can the first and second gears in the 2000 be changed, lowered to allow for better performance in town? Or would a supercharger installed on the engine (in addition to the turbo) allow the engine to have more power at lower rpms?
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Old 09-24-2017, 10:12 AM   #2
Bus Geek
 
Join Date: May 2009
Location: Columbus Ohio
Posts: 7,244
Year: 1991
Coachwork: Carpenter
Chassis: International S3800
Engine: DT360
Rated Cap: 7 Row Handicap
if you want lower first and second gears you likely want to use an allison 2500 wide ratio (2500 PTS is the school bus model).. it gives you a 3.51 / 1.90. first / second ratio instead of a 3.10 / 1.81

-Christopher
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