Ford’s “Y” block engine, debuting in 1954, was named for its distinctive Y-shaped block design. Though it replaced the flathead, it had its quirks—like oil flow hiccups that could make it as temperamental as a teenager. An aftermarket oilier kit, originally for Ford’s racing cars, was a saving grace. Despite its foibles, this engine had its glory days, outmuscling Chevy in the mid-’50s. By the ’60s, it was overshadowed by bigger blocks, but nostalgia keeps the “Y” block revving in hearts.