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Machined from a solid billet of aluminum, this LT4 supercharger lid replaces the restrictive factory piece and opens up airflow through the blower for a cleaner, cooler charge. The improved design is worth around 25 horsepower on its own, and 1/8" NPT ports are machined right into the lid so you can plumb in direct nitrous injection. Sold as the lid only for a quick, clean bolt-on upgrade to GM's supercharged LT4.
Details: Billet aluminum construction; Direct replacement for the factory LT4 supercharger lid; Integrated 1/8" NPT nitrous port(s); ~25 hp gain from improved airflow alone; Lid only - solenoids, lines and jetting not included
Fitment: GM 6.2L LT4 supercharged (Corvette Z06, Camaro ZL1, Cadillac CTS-V) — Lid only. The '-N' suffix denotes the nitrous-port configuration (vs the '-WN' nitrous + water/methanol version); confirm exact application and port tapping with the supplier.
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