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Old 12-07-2011, 11:19 AM
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Default 66RFE vs 65RFE Trans

2500 (DJ) model trucks now (2012 MY) use the 66RFE automatic transmission, which has different ratios than the 65RFE (which is currently used in 1500 models).

How many of you would prefer the 66RFE over the current 65RFE (for the 1500 models)? Here are the ratios:

65RFE:
1st = 3.000
2nd = 1.667
2nd prime = 1.500
3rd = 1.000
4th = 0.750
5th = 0.667
Reverse = -3.000

66RFE:
1st = 3.231
2nd = 1.837
3rd = 1.410
4th = 1.000
5th = 0.816
6th = 0.625
Reverse = -4.444

The geartrain in the 66RFE costs significantly more than that in the 65RFE (it is much more durable), so a 66RFE trans would probably cost more (maybe $250, but that's just a wild guess). But given the option (65RFE as standard, or 66RFE as a $250 option), which would you choose?
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