ORIGINAL: cheech4
lets put it this way, my friend has the same motor in a B4 buggy using 6 cell IB 4200 and he was getting speeds of about 43 mph... now take the xray, its a touring car, its lighter and more aero i say about 45-47 mph maybe a little more.
43? Was that on a race gearing? It should hit at least 50 with a MM 7700 motor.