As Chevrolet celebrates the 70th anniversary of its small-block V8 engine, let's take a look at the engine's history.

In a gas engine, a small device called a spark plug ignites the compressed ... as possible – one reason why most buses, trains and large trucks run on diesel. Diesel engines tend to be more expensive ...

In a gas engine, a small device called a spark plug ... trains and large trucks run on diesel. Diesel engines tend to be more expensive than gas engines, since they need sturdier parts to ...