But the frame is still made of high-strength steel for strength and durability. Engines include a 3.5-liter V-6, a 2.7-liter EcoBoost V-6 or 3.5-liter EcoBoost V-6, and a 5.0-liter V-8. Ford is taking a gamble on aluminum, but if it succeeds, it could alter the way trucks are designed and built.