This something I have been wondering about for quite a while. Is engine HP related to the weight of a tractor? Hypothetically speaking could an engine from a B3030 be put in larger tractor like the L3130 and move the tractor around the same? Could a new B2930 engine be put in a L2800 and still maintain the same power as the original L2800 engine? The difference being about 1,000lbs in the two machines. The 2920 engine is normally moving around a 1500lb tractor where the 2800 engine moves around a 2600lb tractor.