Stroked 340, you need to let this go and again sloooowww down on your reading,it clearly sates a bsicly stock 71 340 demon,that means a full interior,stock suspension car that only has a few mods,no ported aluminum heads,no fiberglass ect.Its right there in plain sight that the engine was blueprinted and had some mods,headers,deep gears ect.No where did I imply it was a stock engine.