not very hard to do.... most generally they run 3600-3800 to begin with so your close as it is
hes talking about going bigger on the rear end pulley.... which will make things complicated..... touch smaller on the engine pulley you'll be set i think.... couple boys up here with their vtwin kohlers and p220 onans run high range 3rd gear.... but their in wheel horses also.... the guy running the p220 also had to go to a smaller engine pulley..... as far as the adjustable engine pulley i have noooo clue where to find them.... probably your best bet is find the next size smaller engine pulleyNo i did not understand all that. you are right on the OD of the tires as i recall about 72+ and about 75.5. What i don't understand is if there was a 6" pulley on the engine and you have already made the tractor faster by tire size ,then you would have to use smaller pulley on engine to slow it back down. If you make the engine bigger like a 6.5 then you are increasing speed??? Paul
its all good i wasnt either... your theory is right and works great probablyI'm not arguing here, like I mentioned, I know nothing about these machines, just trying to give some insight.