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When it comes to LSX crate engine performance, Chevrolet Performance starts with our strongest foundation: The LSX Cast Iron Block. Designed to support higher power outputs than our production based aluminum LS cylinder blocks, including with supercharging, turbocharging and nitrous, our LSX-based crate engines are tested and proven on the drag strip. The strong, forged crankshafts and pistons provide the power you need with the strength you can rely on, race after race!
Build your boost on a budget. Chevrolet Performance takes the economical LSX Bowtie standard-deck block, adds blower-friendly 9.0:1 forged pistons and combines them with the LS3’s highflow, rectangular-port heads to create an affordable foundation for supercharged and turbocharged combinations.
The LXS376-B15 is the foundation you need. Its durable, all-forged rotating assembly supports up to 15 pounds of boost and our ratings of 473HP and 444 lb.-ft. of torque are only baseline numbers of what this engine can offer.
With the LSX Bowtie block, we’ve built a 21st century 454 with our latest technology. It’s lighter and more compact than an original Big-Block 454—and it delivers the stunning, big-torque output you expect: 586 lb.-ft., along with 627 horsepower. Best of all, it requires no more space under the hood than a production LS engine.
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