In a typical auto supply store, you'll find bottles of aftermarket engine oil additives that claim to improve performance and make your engine run cleaner. But are these additives really worth buying?
Chevy engineers had to bend some of their rules to get as much power out of the Chevy 454-cid V-8. America's "fuel shock" would ultimately sentence big-inch high-performance cars to oblivion. Learn about one of Chevy's milestone performance engines.