Review on 💥 1-Pack Champion Copper Plus 429 Spark Plug by Jun Merritt

The use of these Champion 3X reproduction spark plugs in a 1931 Ford. Used Motorcraft 636 spark plugs (available widely) because they were good value and for the spark plugs required by the Model A with unusual size were suitable. Many Model A owners use these Champion 3X spark plugs for one reason or another, and some swear by them. When I found these forks here at Revain for less than $20 each with free shipping, I decided to give the set a try and see what all the fuss was about. I don't see any difference in how the car drives, which is good. I suppose some of you with high pressure heads, bored cylinders etc can see a difference but my stock engine just isn't picky. It's fine no matter what. Not sure yet if there will be a difference in fuel economy but some say these 3X plugs can improve MPG. I have found that the engine idles a bit slower with these spark plugs. It runs smooth as silk with any kind of spark plug above the very low idle.