BoostLine Performance

Big power starts with airflow, and Boostline Performance CNC Ported 821/823 heads are designed to deliver. Built from genuine GM rectangle port castings, these heads receive a precision CNC port program and are assembled with quality components to support everything from aggressive street builds to serious race applications. Every set is pressure tested, machined, surfaced for MLS gaskets, and carefully assembled before leaving our shop.
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284cc intake ports
99cc exhaust ports
72cc chambers
2.165/1.60 stainless valves660 dual springs with titanium retainers
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If your goal is more horsepower without sacrificing reliability, these CNC ported 821/823 heads are a proven upgrade capable of supporting serious performance while retaining the durability of OEM GM castings.
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Introducing Boostline Performance LS Swap Packages!
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Take the guesswork out of your next project with a complete, ready-to-run LS package built to make your swap easier than ever. Every package is professionally assembled, dyno tested, broken in, and thoroughly inspected before it leaves our shop. Plus, each package comes equipped with Holley EFI and a base tune loaded, so it’s ready to fire up and get your project moving. Whether you’re swapping an LS into a classic muscle car, truck, hot rod, or race car, we’ve done the hard work so you can spend more time driving and less time chasing parts and tuning issues.
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Check out the available packages here:
https://www.boostlineperformance.com/collections/turn-key-engine-packages
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Questions? Give us a call and let’s get your project powered by Boostline.
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