Great pics Cornrichard, hows the corn,moisture,yeild??
Like Cornrichard once the truck gets rolling the allison is much better. The only times the allison is a little iffy is when the truck sits in a field while getting loaded and the wheels sink in the dirt a little. The gearing is a little high and the truck has a little trouble getting started. The trucks have a much lower gear in reverse so I usually back up a couple foot to get out of the tire ruts and then it comes out fine. Ive found the best way to shift while pulling a load is to start in the 1-2 position and run the truck up to about 28mph, it feels like you are getting 3 or 4 shifts(it is the convertor locking up and the gear shifting) then I keep shifting up manually as I approach 2100rpm. If you let if shift automatically you get some really harsh shifts and I think its hard on the tranny. Once the truck is moving there is no disadvantage to only 5 gears instead of 16. Thru town while loaded I can blow the other trucks away with the allison but its not as dramatic with the cat. With the allison from a stoplight I will be at least 50 foot in front of the other semi. The cat takes more time to shift so isnt as fast. I have a big hill on the way into town and again the allison is faster up the hill(Im running about 68 mph at the bottom with that truck because of the tall tires while the cat is only going about 57 at the bottom) The hill is about a mile long and steep for nebraska, I drop about 5 mph with both trucks loaded. There is a steeper hill that I go down and have to run the jake and brakes to keep under the speed limit and when I come back empty the trucks will pretty much go up it without loosing any speed(1-2mph if I have my foot into it at the bottom) The cat tranny shifts fine its just a lot more work than the allison. The allison would be even better with a 2 speed transfercase (916A1 style)