Replace 65RFE with 66RFE - 2013 Ram 1500 2WD

[Jim P 2.0]

My 2012 68RFE has well over 3000 parameters on the transmission end of the calibration

[rodslinger]

is your truck 2wd or 4x4?

2wd

[VPP1776]

2wd

Being a 2wd I feel like it would be a simple physical swap for sure. But the tuning is the only issue I worry about. In theory them both being 6 speeds with the exact same hydraulic function it should work if we could suppress the ratio error codes or properly code the new ratios into the tune. I wish it were as simple as selecting 66RFE from the drop down and copying the gear ratios over in those tables. I know I want to give it a try one of these days, I have a customer with a 2012 1500 that just called me interested in giving it a shot today, so we may see sooner rather than later.

[VPP1776]

Update, the customer's truck is running the 66RFE without ratio error codes. Selected 66RFE in the drop down and changed the ratio parameters to match the 66RFE. A simple slip yoke and conversion u-joint had him moving.