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Gonna lose bottom and probably a portion of the mid range. On near stock LS3s this has been the norm and really needs a healthy cam and cubic inches to make this intake work, and even then they lose torque vs the stock intake. You'll be happier with the mid if you're set on doing this.
In your signature I don't see a cam, head work or even headers to help get to 505.
3500-8000+ RPM Power Band listed by Holley
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