Originally Posted by Mat7783
Looking at 3126 bus with AT545 tranny and newer bus with C7 and Allison 2000 tranny. Which would be a better decision? The 2000 is an improved tranny from what I am learning on this forum and is the C7 really a better and improved power plant over the 3126?? Any and all thoughts are appreciated...
No the C7 isn't improved in any way. Its an emissions compliance difference.
The 3126 is as good as it gets for medium duty cats in buses.
The 545 is not as good as it gets.
But mostly depends on the use of the bus. 545 is ok in a shorty, as they're lighter and all that.