2008.09.14 - !UPDATE! - THE PLANS HAVE CHANGED...
And that typically means that the budget just got ruined too.

But in this case, there will be some savings in certain areas to offset other areas where costs have increased.
Here's the deal...
As I pondered my next steps with the truck it became more and more clear that if I truly build this truck in 2 Phases (the current 1-Ton phase, then the Mog Axle phase) I'm going to end up building a LOT of things twice. Specifically, crossmembers...parts of the chassis underneath, the link mounts will change to accomodate the higher axletubes of the portal axles, the transmission will change from an auto to manual, etc. etc.
The thing specifically that has been on my mind is the costs associated with integrating the Mog axles to the build. I've already spent some serious coin on the axles and special CNC'ed portal boxes but there is still quite a bit of money left to spend....since I need to have the housings narrowed and have the front pumpkin moved from the left side (driver's) to the right side to match the front output of my Atlas. Integrating the T56 (6-speed) means custom bellhousings, a clutch pedal, hydraulic setup, custom output shaft and adapter, and finding a way to get the shifter far enough forward to come out of the center tunnel somewhere in front of the driver (not behind me!)

It's all possible to do.....but it will take plenty of time and money to accomplish. Not to mention that I'll have to REDO many of the things I'm already solving now.
Enter the newest player in this little "Might As Well" story: The Mog-9 axle.
The Mog-9 is basically just a set of 404 Mog portals with a Ford 9" centersection instead of the traditional Mog dropout centersection. This allows for a change in gear ratios from the stock 3.54:1 to whatever you want. Initially, this didn't appeal to me because the last thing I wanted to do was go even DEEPER with my axle gears....but as I looked around I discovered that there are quite a few ratios that are higher (numerically lower) than 3.54:1 on the Ford 9". In fact, there are a total of 6 ratios less than 3.0:1 available!! What does this mean?
It means that instead of a set of portal axles with a 7:56:1 overall ratio, I now have a way to build a Mog 404 axle with an overall ratio of only 5.33:1. That's a huge deal because with a ratio like that I don't need a 50% overdrive ratio from the T56 (6th gear) to drive this thing down the highway. In fact, according to my calculations a 4L80E transmission with a 25% overdrive will be PERFECTLY MATCHED to this setup and will provide me with 2200RPMs at 65MPH, and only 2500RPMs at 75MPH!!
My life potentially just got a LOT simpler now. Instead of doing a complete transmission swap from Auto to Manual to accomodate the Mog axles, I can build the driveline
ONCE with a 4L80E and be done with it. Remember, the 1st, 2nd and 3rd gears in a 4L80E are identical to a TH400 so even if I don't do the axle swap immediately, I'll still have the ability to run the transmission in 3rd gear on the highway with my 4.10 axle gears (14BFF) and have awesome RPMs.
The 6-hole pattern on the back of a 4L80E case is identical to the TH400, so all that bracketry I've already built off the back of the TH400 can be re-used too. The only small issue is that the case is about 1.5" longer than the TH400, so my Atlas shifters will be a bit too far back with the current bracket I've built. It should be a simple matter to rework that bracket to move them forward 1.5"...I should be able to get that done in an afternoon.
All of this is based on a number of assumptions, and I still have quite a bit of research to do to validate that this will all work the way I expect it to. I also need to do a real side-by-side comparison of the costs to see if this is a lot more expensive than my original plan. My guess is that it will add some costs, but will save me a lot of conversion time and will allow me to skip the entire (Phase 1 / Phase 2) build strategy, and simply continue forward immediately with integrating the Mog axles into the current build.
The lucky thing (if you can call it that) is that I'll have a pretty decent pile of premium parts that I can sell off to help finance this part of the project:
- D60 Front Axle
- 14BFF Rear Axle
- 0 Mile TH400 built tranny
- T56 Viper Transmission
That pile should bring in a few dollars to help keep things moving along....
