Me and my father are restoring a 1976 Vette. There is a pretty wide gap at the top of the fenders between the fender and the doors. The gap is wider at the top than it is at the bottom(both sides). Is there any way to raise up the front end to close the gap.  

Sounds like you missed putting the shims in when remounting the fenders.

You need to get a pack of fender mounting shims and use those to get the fenders properly aligned. The shims are cheap and can be found in the help section at most autoparts stores.