Anyone know why, Things that ive done, new plug, new carb, fixed holes in tail pipe, new head gasket, checked valve clearances. Im lost, it makes no diference what gear im in i can not get over 60 mph, this is a 1996 ls 650 with 13600 miles on it, bike runs great up to 60! Not sure where to go from here. Any help would be great im at my wits end with this.

do you have a tach?
Is it reving high enough to go fast?
I'm wondering about your new carb, what jets?
Could it be a cable issue?  Just not getting enough twist to go?

where can i find a faily cheap tach that will work with this bike?

search tach, there are a few listed here.

ok Im not familar with jetting and stuff whats involved and how much does it cost or should i try to send carb back and try another carb, when i bought this carb i had a hard time finding the right one because the oem for this year was discontinued, they gave my a updated or revised version could this be the problem? How can i know what jets are in this carb?

Maybe the float in the carb's bowl is set wrong and causing a fuel starvation problem at higher RPM's. Are you getting any loud backfiring between shifts or black smoke out the pipe? Check the air filter and try a short ride without it just to see if there is any difference. If you are looking for a inexpensive tach and don't care what you use then look for a small engine or lawnmower tach. They are self contained, all you need to do is wrap the pickup wire around the bike's plug wire and hook up a ground.

Mine did that with one custom exhaust baffle I tried out and two different intake filter materials that I tried out.  They caused too much airflow resistance on one side of the engine or the other to where the bike wouldn't get past 65.  The problem was apparent momentarily at higher rpms when shifting through the gears and then persistently obvious at highway speeds.  I'm not saying that either is your cause but pointing out that air flow on both sides as well as fuel problems can cause these issues.  What kind of holes did you have to fix on the muffler?  Was there a previous owner?  Did they do anything to the muffler?

I think we may have something like that going on, Like i said i fixed the holes in exuast though this made no difference in performance just made the bike quieter. the air filter is i think it is stardard, its square black plastic with white filter and is clean. If its in this carb i am going to be so mad it took forever to get the thing and now it might not even be working right!