Someone with more knowledge can give a better answer but, on my 1100 @ 70 it's cranking some pretty good rpm's. With no tach I don't know what it may be. What you are hearing could very well be normal. Just a little input here.Is there a definite way to tell if my v-star is a 1100. The guy I bought it from said it was a 1100 but, I feel like it should cruise at 70 at a lower rpm. I can't find anywhere on the bike that says the engine size. I just want to make sure the guy did not con me.