Description
If your Big Block Chevy needs serious airflow without stepping up to max-effort 380cc ports, Dart’s 355cc CNC Pro 1 heads are the sweet spot. These bare aluminum castings give you the freedom to build your own valve train while delivering proven CNC-ported performance.
Features:
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355cc CNC-ported intake runners for high airflow and strong velocity
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Bare aluminum design – spec your own valves, springs, retainers & hardware
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121cc combustion chambers for flexible compression ratios
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Designed for Mark IV Big Block Chevy (396–502+ ci) applications
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CNC porting = consistent, repeatable flow across all runners
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Lightweight aluminum construction cuts front-end weight for quicker launches
Why It Wins:
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Runner size that balances torque and top-end horsepower for big-inch builds
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Bare heads = full control over your valvetrain setup
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CNC precision ensures reliable, race-proven performance
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Weight savings vs. iron = better 60-foot times
Dart’s Pro 1 heads are a racer’s foundation for reliable horsepower. Build your BBC the right way with CNC airflow you can trust. Shop now at Virtual Speed Performance and join the VSP Crew. 🏁
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