my 67 with 289 engine shakes when revving. it shakes the whole car when it does this. (see attached video) i didnt notice it before. is this normal? it also started stalling while driving. i'm not sure if it's related. also the gas pedal would get stuck in down position i used to have to pull it back up slightly with my foot but i have recently applied a temp fix until i wait for my new throttle rod to come. i haven't tested it to see if its that yet. im afraid of getting stuck. could all this be related to the shaking? or is this two different issues?