hit clutch... RPM\'s drop...what the?? Alright, 87 V30, 454 TBI, swapped in a 5 speed about four months ago everything was peachy keen. This morning and all day today whenever I hit the clutch (2000 RPM) the Rpm's drop to 500, rebound back to idle, and that's it fine after that. what's going on here?? I didn't see any loose vacuum lines. Any ideas? Should I check closer for a vacuum leak?