Im new to the forum but I have 84 hurst/olds . I have a rebuilt olds 350 with elgin rv torque cam . The problem that im having is not be able to spin left tire. the timing is set on 20 bdtc and the only way the left tire spins is in gravel rocks . so is there anyone out here can give a little insight what might be wrong. im starting to think that clutches in the rearend are going bad. i been having the car since i was senior in high school.