Big Blue doesn't seem to have any problem moving whatever I connect it to. But, the wide gaps in the transmission's ratios mean you really have to wind it up in 2nd and 3rd. Anyway, you got it moved.
How'd you like to take it across the country? Blue made taking our 25' Sea Ray to Lake Powell quite easy 2 years ago. We got 11.0 MPG running 65 MPH - which is about what Big Blue gets w/o a trailer. I shudder to think about using him to have taken the boat on that trip.
Gary, AKA "Gary fellow":
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Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI