The 632 cubic-inch big-block, the most powerful engine Chevy has ever built, is available among the automaker's ZZ crate engine lineup ... refresh your LS3-powered GM car without the hassle ...
Measuring in at a whopping 632 cubic inches ... Russ O’Blenes, GM director of the Performance and Racing Propulsion Team, said: “This is the biggest, baddest crate engine we’ve ever built.