Experienced tuners know that the stoichiometric air-fuel ratio of a fuel is the exact proportion of complete combustion.

But what does it matter?

A new iron block for big-inch and high-horsepower LS builds.

Summit Racing delivers an all-new performance block to the aftermarket.

This round of Ask The Experts focuses on Canton Racing Products and oiling and cooling system products.

Fire up your keyboards and ask away!

​Smokey Yunick was a legendary figure in motorsports, innovative and often unconventional but also controversial.

Hill Country Performance uncovers some of his old tricks in parts they acquired.

Hot rods and tow rigs need very different timing strategies.

The right advance curve can boost performance or prevent engine failure.