I'd go with a traditional tractor unless your land is smooth and rock free,and you have lots of time...the horsepower isn't there on a ventrac for high speed or high production mowing big pastures if you have let them go for long periods of time,it will do it but slowly. One previous post stated a 1/2" belt was the drive ,and this is incorrect,it's a 5/8" belt drive which is much stronger than a 1/2" ,with the 75hp rated PTO clutch the setup is definitely adequate but is no comparison to. 540 Pto and gearbox brushhog......another comment was how the diesel was more powerful,and that too is not the case,it may be more efficient but the most powerful ventrac engine is the 31 Kawi DFI,the kubota 3 cylinder 32.5 is rated higher but the Kawi is stronger and more fuel efficient,but the kubota should have an engine life advantage,as they are a very well built engine.the kubota diesel is a great engine too just a little less power .Do not under any circumstances buy a used 31 turbodiesel,it's an unreliable headache engine,I've yet to see 1 make it to 2000 hrs without major issues,it's also a known an overheater,especially
mowing pastures,and they aren't made anymore,parts are no longer available.
Thanks for the info, especially about the 31 turbodiesel, i have read about the overheating problem and am glad it was one particular model and not the entire line. Our pasture is rock free, some flat, some slope, some wet low lying areas. It does not get overly overgrown. I know that the ventrac equipment will save time on the slopes and around the creeks, springs, ponds etc but am still not sure how much slower it will be over flat ground. Most of it is just pasture grass a couple of feet tall.