We ran my cousins bike on the dyno today. When we drag race his bike pulls about dead even with mine. When I have ridden it, it has alot more low end grunt than my bike. Its also a 4 mill stroker with the exhaust ports dropped down lower than stock, and a 2 into 1 intake with a 36mm lectron carb. He also has pro circuits pipes on it. It made about 6 less hp than mine on the dyno, the torque was about 3-4 ft lbs better than my motor, and he runs about 190 psi compression in it.
Just goes to show ya, torque and that low end grunt can take you a long ways. He stops making power at around 8,000rpm, my bike stops at around 8,700-8,800 rpm.