I have a 57 V8 original stock position front motor mounts and even after resurface , pressure plate, bearing, seal, clutch it still chatters in 1st gear 1 out of 3 times. It seems to get the engine jumping on the front mounts. My mechanic recommended side mounts. He happens to have a 55 tow truck.
When mine chatters like when going up my steep driveway from a dead stop to put it In first, I can stop and try it again or slip it more and it will do better the second time. Most of the time if I start slow with little throttle and get the clutch pedal out without slipping much it avoids the chatter. 2nd and 3rd are fine. In first it seems that I jave to try to keep the engine from rocking. My mounts have all been replaced.
