Some here know I put my 70’s in storage. I did it because after I improved The range into triple digits I was going on roads I probably shouldn’t have been on. I upgraded to a 500cc Honda. It can handle the roads I ride and lets me uncomfortably steal an exit or 2 on the interstates (70 mph here). What I am coming around to thinking is my 70 has as much or more grunt at 0 to 40mph as my 500 then falls flat. I know I’m geared just right so changing gears isn’t what I’m thinking. I’m wondering if it’s possible to retune it to give me better top speed torque. Not sure I asked that correctly. Can I give up some first gear grunt and get it back in 4th? Would a properly selected cam do that? I ask because my Grom was anemic in 1st but recovered once in 2nd and pulled nicely to redline in 4th and was a 125. It could handle the roads around here. I learned that the same motor is in the CBR500 and CMX500 but different tunes and they perform differently. My 70 (108 cc’s) doesn’t have maps to try so just wondering about cams.