Posted by Mortimer D on November 29, 2022 at 08:41:52 from (24.154.25.70):
In Reply to: Aisin vs Allison trans posted by IndyFarmBoy on November 29, 2022 at 07:28:17:
I'm no authority on the topic but have quite a bit of seat time in both GM and Ram trucks.
I own a GM/Duramax with the 6 speed allison 1000 transmission, I've been happy with it. I have 130,000 miles on it with a mild increase in power and no issues to date. The more power you put in front of these I believe is when you start to see issues but that all depends on how you treat it.
I've yet to drive a GM/Duramax with the new 10 speed allison so I can't comment on it.
I've driven a newer Ram/Cummins with the 68RFE and was not that impressed. The best way I can describe the engine / transmission combination is an awkward first date. Neither the engine nor the transmission knew who was going to make the first move or how to act after that move was made. Either way someone is going to end up disappointed.
I've driven a stock Ram/Cummins with the Cummins/ Aisin setup and it did everything it was asked of. The truck has over 125,000 miles and still performed fine. My only comment was that shifts seemed to occur very slowly when compared to my personal GM truck. Out of shear curiosity I googled it and the internet basically said the transmission can't handle the cummins torque, so it makes sure to defuel between shifts. Weather this is true or not I don't know but thats what I read.
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