piston ring tech

I’ve heard that late model engines now run much thinner rings than the older production engines. Are these thinner rings just there to improve fuel mileage or is there a power advantage with these new rings? I’m about to rebuild my small-block Ford and I’d be willing to try something newer if it’s better. Thanks

When you shop for high performance piston ring sets, you’ll no doubt find there are many different sets and styles available (no big secret). And many of these ring sets are designed to be hand-fit to each cylinder bore. Typically, file-fit rings are designed so they measure 0.005-inch oversize (obviously larger than the cylinder bore size). By