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Old 01-05-2013, 05:54 PM
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ericlee9386 ericlee9386 is offline
Dodge Ram Forum Senior Member
Join Date: Aug 2010
Location: Ruston, La
Age: 29
Posts: 296
Gender: Male
Vehicle: 2011 Dodge Ram
Trim Level: Big Horn
Color: Black
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
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Originally Posted by TransEngineer View Post
While the solenoid module would not need to be changed, the other considerations still hold true. I'm not sure offhand whether the converter would be identical or not (probably is, but I'm not sure).

But the biggest issue would be the PCM. The gear ratios for the 66RFE are different from the 65RFE, so if you just hook it up as is, you will blow gear ratio error faults immediately (and continually). It would be unusable for that reason. And I don't know of any way to get the PCM reprogrammed to the new ratios.
What about the ATS copilot. Would it help serve as a solution to the problem. I was thinking of adding the new 8speed in a few years?
Performance mods
2800 stall, moes ported throttle body, vararam intake, ARH LT, Flowmaster 10 series, Hemifever tune.
Best 1/4 mile: 14.30 @91 mph soon to be 13's
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