A case in point - a friend of mine bought a rebuilt/restored GT380 last year. When the rest of us were hammering around on L plates on what we thought were blisteringly fast 250 stokers - the 400 class bikes were deemed as a kind of Holy grail. Faster than any 250, capable of cracking the ton with ease, teenage biking nirvana. After handing over (far too much) cash, riding the thing home, he took it sedately for the first 20 miles, and then wound it on properly. According to him, he crawled to about 85mph - gathering speed slowly rather than accelerating - and then wound it back, suspecting a poor engine rebuild, or something else majorly wrong. After arriving home, he parked the bike in the garage disgusted, then went in and pulled out the old road-tests to see just how bad his example was. A 1973 issue of Cycle World threw up a figure of 38bhp & a blistering 28ftlb of torque.