I saw a chart last night for a motor that was ran on the crank dyno last year. It was a 68mm cub with 2mm hacked off the base of the cylinder. Run with a stock head re-domed, and 4 mill crank. On the crank dyno it put down 85.5hp and 50ft lbs of torque with pro circuits and 30mm mikuni flat slides. The chart lines were a nice gradual rise like the one I posted for that 7mm motor. It had around 1,600 rpm of torque backup on it. The torque came on really early, and Dave said it was super easy to setup the dyno on it. It needed almost no adjustment, and it put down the same numbers run after run consistently. Turns out I also rode the bike that motor was in last year as well. I remember it being a wheelie monster and pulling pretty damn hard.
To give you guys an idea of hp readings on this dyno: My stock ported 350 beats quite a few mx and torque ported 350's we ride with on the drag hill. I put down about 66.75hp and 42 ft/lbs of torque on this dyno.
We have a really good running 4mm stock cylinder that runs almost a dune port duration (about 189-190 exhaust) That bike beats most 4mm stock cylinders bikes on the hill. It put down 72hp and 47ft ft lbs of torque.
I really think pro circuits and smaller carbs should be tested on this serval setup.