Boost-Ready 427 LS Makes 700+ HP NA — Dart Block Dyno Test
Watch this 427 cubic inch LS come to life on the engine dyno.
This build starts with a Dart Machinery Iron block as the foundation — engineered for serious power and durability. Inside, we’re running MAHLE Motorsport forged pistons built to handle high cylinder pressure and sustained RPM abuse. Up top, it’s equipped with Mast Motorsports LS7 heads, delivering exceptional airflow and top-end performance.
This combination makes for a nasty 427 that’s built to handle serious horsepower — whether it’s staying naturally aspirated or seeing boost later on.
In this video, you’ll hear the cam, see the pulls, and watch the power numbers climb on the dyno. No fluff — just real engine building and real results.
If you're planning your next LS build and want something engineered to handle big power reliably, we’ve got you covered.
Visit us at:
👉 https://boostlineperformance.com
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