Roaring engines are standard fare at a stock car race. What’s the history behind the horsepower and what are the rules now?
During the 1960s and early 1970s, most American V8s were heavy and built simply, and the Pontiac SD-455 is no exception.
Despite its 370-horsepower rating from the factory, this old-school muscle car engine was capable of much more than that.
If your car feels down on power, a trip to the garage might be in order, but checking these things before you go could save ...
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