Big-cube performance is very popular with hobbyists, and for Pontiacs that usually includes a 400 or 455ci engine. When attempting to extract maximum performance from such combinations, many owners ...

For Part I, covering the new combustion system, direct injection, and active fuel management: click here. For Part III, covering the block, crankshaft and lubrication systems: click here. Continuing ...

Does your engine need a valve adjustment? It depends on the age, condition and brand of vehicle you’re driving. Due to the popularization of roller-follower valve train designs that reduce friction ...

More than ever, we find our mailbag stuffed with questions regarding performance upgrades for the anemic '96-'98 4.6 Two-Valve engine. Ford helped close the gap between enthusiast expectations and ...

Cars' engines have to resist tremendous pressure and heat up to 3,000 degrees. So what in the world is a soft, explosive ...

Taking care of your vehicle is vital to ensure it stays in great condition. Your brakes could give you trouble someday, or your suspension could require tinkering, inevitably leading you to an auto ...