Ive got a 85 camaro with a worked 350 and a T5 5speed. I went to put it into reverse today and it grinded slightly but went in. Then when i let off the clutch the car rolled forward. I couldnt get it out of the reverse postion at first then finally did had it in nuetral let off the clutch and the car rolled forward?? Whats going on here??

 

Sounds like something came loose in the shift linkage.