Snapper produced its 640B lawn tractor model From 1960 Until 1962 in Georgia this exact model was priced at 500 USD with a Open operator station cabin. Talking dimensions and weight, this model weighs 380 lbs 172 kg while maintaining a wheelbase of 40 inches 101 cm the front tread is about 27 inches while the rear tread is 27 inches . This tractor can fit lawn tires of 4.10x6 front and 4.10x6 back . This Snapper 640B it has 231 cc or 14.1 ci 1 cylinders. This machine has 4x2 2WD wheel drive system,.