If you are already thinking Lq9 with an LS3 head swap, skip a step and pick up a LY6 6.0. As they already come with the square port heads and have valve reliefs from the factory for increased PTV clearance with bigger cams. Best bang for the buck out there IMO. Hit up Pat G over on ls1tech for a custom cam spec for your intended application, One of the best in the business and will get you headed in the right direction.
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71' Nova - LY6, T56
Last edited by NvrDun71; 11-21-2013 at 06:30 AM.
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