super t 10 noise
 

just bougt a 69 chevelle ,haven't driven much,shifts good no noise 1st through 4th dosn't pop out of gear,BUT when in neutral-clutch depressed going for reverse a loud grinding noise,i even feel it in the shifter&floor board,does it cold or hot???? any thought would be greatly appreciated. thanks in advance john. its a b&w super t-10