Lil Black 4x4 Hemi
I haven't heard that the 2014 will get the optional Aisin transmission, but that could be a great addition. First gear would actually be 3.75 vs 3.0. Correct me if I'm wrong, but the 68rfe has a first gear of 3.23, which the Power Wagon doesn't have, correct? Also, below is something I posted a while back concerning the axle ratio changes, and how the new Power Wagon will actually have less torque at the wheels than previous models. That calculation would change if the Aisin transmission is used in that the Aisin would allow slightly greater torque for the first two gears (especially 1st gear), but the 66rfe would allow greater torque for gears three through six. Read what I have below, and seriously consider buying a 2013 Power Wagon...they might be the last "real" Power Wagon.
"By performing a simple calculation, I've discovered that the 2014 Power Wagon, although with a more powerful engine, will still have less torque at the wheels compared to a '13 model or older. The reason it will have less torque is that it is losing torque multiplication from the new 4.10 axle ratio. Even with the additional 29 torque at the engine, the 4.10 gears just can't compare to the 4.56 gears. Below is theoretical calculation I've created based off the pickup's weight in tons, that demonstrates the max torque at the wheels per transmission gear ratio. **This calculation doesn't factor in mechanical slippage, wind, and other environmental factors. Max torque at wheels per transmission gear= (transmission gear ratio)x(axle gear ratio)x(max engine torque)/(vehicle weight in lbs./2000)
Transmission gear ratios are 3, 1.67, 1.5, 1, 0.75, 0.67
Vehicle weight is 6350 lbs (approximately)
2013 and older max torque is 400
2014 max torque is 429
2013 and older axle gear ratio is 4.56
2014 axle gear ratio is 4.10
Here are the values per transmission gear for 2013 and older models, and 2014 models (expressed in torque at wheels per vehicle weight in tons)
2013 and older, 2014
1st 1723.46, 1661.95
2nd 959.4, 925.15
3rd 861.73, 830.98
4th 574.49, 553.98
5th 430.87, 415.49
6th 384.91, 371.17"
Here is more to think about
Other factors like cylinder deactivation, although good when working, may be troublesome and might not even get better MPG. Lastly, some may like coil springs, but I know a lot of people who don't. Look at any late '60s GM 3/4 pickups, those coil springs (GMC model I believe) never lasted the test of time. I know technology has came a long way since then, but physics have stayed the same. The physics behind a leaf spring are unbeatable.