I dunno... I felt bad for the guy when he was posing with the mower 3/4 thru the vid.
He would be getting a lot more that 20hp out of that motor. 20 hp is stock but he put an aluminum fly wheel, billet rods, header exaust, removed the governor and likely stronger valve springs. With all of that he may be getting another 8~10 hp. If he put bigger rear tires he may do it. And about those tires, they couldn't be actual lawn mower tires could they? :eek4dance: I don't think they would be rated over 40 mph. :laugh:I had the same feeling. Too bad so many limits/restrictions kept him from reaching his goal of 100 MPH. 20 HP isn't going to cut the mustard, but at least he tried and was happy with his results.