[SpEEdyBL]

The only physical difference between the 2200 and the 2650 is the length. What does that do? It makes you have gear higher to get the same top speed, and changes the range of efficient operation. Like for example, the 2200 would handle a lot of stop and go driving due to the bigger area to disapate heat and the fact that it doesn't have to rev and re-rev so much. If you were to stay at more of a constant speed the 2650 would be better because higher rpm up to a certain point is more efficient. At least that's my theory. My 2650 geared for 60 mph on 5s in a HUGE parking lot where I don't have to slow down very often runs about 10 degrees cooler than when i run in front of my house on 4s and have to break to almost a full stop to turn around again every 250 feet.