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Discussion Starter · #1 ·
The truck. Medium duty 2005 Chevy c4500
Transmission was sold out of it
What should I put back
5 speed allison??
6 speed Allison ?? will i be able to communicate and use 6 gears or does the same rule apply to medium duty

what digit tells me what trans belongs 1000/2000

any help greatly appreciated thank you
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