Benefit of 8 speed?

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TheEnder

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Care to share the findings of your extensive research? Or your opinion on WHY the 6 speed is a better choice than the 8?

With a tune making it so you hit 3rd (2nd prime) with the 65RFE, it awakens it massively. Without a tune, the 8HP70 destroys the 65RFE in gearing (seriously chrysler, WTF was your tranny engineer smoking?) but i’m not so sure ab reliability yet as i haven’t had any issues with my 65RFE or my 845RE.


Sent from my Blue Onyx RAM 1500
 

crash68

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I can't for the life of me find it again, but I remember reading an article about a year ago that hinted that ZF was already in the process of making an 8 speed transmission for the diesel heavy duty market. I would be not at all surprised if we saw an 8 speed Cummins in the near future.
See my post/video above about the CTD/ZF 8 spd
If I had to take a guess the CTD will get the 8spd when the HD trucks get the Gen5 body design.
 
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