I never said newer automatics couldn't haul, but these new 6-speed autos especially when behind a gasser than can spin 5000+ RPM, you have the option of 3 (or 4) gears at 55-60MPM: Overdrive, (overdrive #2), Direct (or close to it), and a reduction gear.
Putting down the hammer in this situation you don't know which gear it's going to land in unless that auto has a manual gear selection option. I was talking of the abilities of a manual to hold a gear in that respect, because you know it won't shift. If an automatic does have than manually controlled option, then it essentially has the properties of a manual transmission in that situation.
My "rig" which is a HUGE 1999 F150 has a 5-speed. I've put it on the floor a few times, let that little 4.6L spin to her heart's content :-)
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Today's Featured Article - Oil Bath Air Filters - by Chris Pratt. Some of us grew up thinking that an air filter was a paper thing that allowed air to pass while trapping dirt particles of a particles of a certain size. What a surprise to open up your first old tractor's air filter case and find a can that appears to be filled with the scrap metal swept from around a machine shop metal lathe. To top that off, you have a cup with oil in it ("why would you want to lubricate your carburetor?"). On closer examination (and some reading in a AC D-14 service manual), I found out that this is a pretty ingenious method of cleaning the air in the tractor's intake tract.
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