Have changed air filters(and crank case), gas filter, plug wires, plugs, rotor and cap, coil, have run gas treatment through both tanks, even had the transmission fluid changed.
truck has 57,000 miles 351 engine auto trans with overdrive
problem is a miss you can be driving 35 to 45 mph and somtimes its almost like someone has turn the key off. Can kick it into passing not a miss one.
Thinking next step is in the computer.