Features Era Of Aluminum: Late-Model OHC Head Rebuilds Advertisement ByBrendan Baker on Dec 1, 2002 Click Here to Read MoreAdvertisement Over the last few years, manufacturers have abandoned cast iron heads in passenger cars and light trucks. Cast iron is heavy and the more radical, lighter, aluminum overhead cam (OHC) designs are the challenges and opportunities facing today Advertisement In this article: Features: One-on-One with Tom Bailey Features: Sick Week 2022: The Hardest Vacation You’ll Ever Take Features: Copper vs. MLS Gaskets for 1,500 HP Features: HCCI Engines Offer a Promising Jump in ICE Technology Advertisement