I just had a guy come in a sing a rough accapela version of a doo wop song he wrote and wants music for. He did not use a click but is fairly consistant. I figured I could figure out the tempo from his vocal, set up a click, slide it in time to line up, fix any issues with melodyne... This is just a rough anyway, and then write the music... But when I change the tempo his vocal stretches or shrinks with it. How do I keep it as is? I tried locking the clip but it still changes. Thanks.

NEVERMIND!!!   I got it.  DOH!

How did you do it?

Well Apparently it wasn't really changing the timing though the zoom on the wave form would change when I would alter the tempo so that was throwing me off.  Also, the vocal I had already recorded was in 2 takes, it kept moving them apart so I had to bounce to tracks 1st to keep it together as one piece.

If an audio track doesn't start at time zero and you want it to retain is absolute timing relative to other tracks when changing tempo, you can set its Timebase to Absolute in clip properties. By default audio clip start times follow the M:B:T grid when tempo is changed.
 
Also, you might want to look into using Set Measure/Beat At Now to sync the timeline to freely performed audio or MIDI. Basically, you just tell SONAR which hits need to fall on which measures and beats, and it sets the necessary tempos to align the timeline for you without altering the playback. And then you don't have to worry about the timebase of clips; SM/BAN automatically maintains absolute timing of everything as it fits the timeline around it. You can set as many or as few points as necessary, depending on how wild the timing is.