I was just basing that from all the 95-97 mph speeds posted with 225x/XB2003 owners that a 225x/XB2002 would touch trips basing on the 3-4 mph speed advantage the XB2002 has at those speeds (I realize the XB2002 speeds keep going after the 03 hits the "wall" so therfore the spped advantage gets bigger). So perhaps 99-101 with a well set-up XB2002/225x?
I am sure one would run over 100mph, but it would have to be setup very well. The main thing that would hold you back is the stock rev limiter of the 225x. If you habe a stock limiter, you need to turn at least a 32 pitch to the limiter. To do it, you should have a raised limiter, which his motor does have. His is 7300, and mine is 7500.
I do not know how much of a performance gain you would have with different heads. I wouldn't expect anything on the high end. I had thought about thay before... but by the time you pull them off, get them cut the same as oem, shipping, and all new gaskets you are looking at some money. The only way I would get them done is if it was cut like the oem heads.... no way I would run silicone on the heads.
I have lightened the flywheel on mine and raised the limiter. I have a motor that will last for hundreds and hundreds of hours, run 100+mph, and get 5 to 6mpg. Its not worth messing with it anymore!
