i just put new plugs and wires cap on and no the motor smokes and shakes alot more than it used towhen you even put a little gas in to it it feels like its gonna shake its self a part i need help bad the ruck is a beast but its never scared me before now i wont even drive it down the drive way beacuse its shakes volently at least to me it dose the motor is a 327 in a 66 k20 lwb fleet