506hp ls1 383 Edelbrock RPM Xtreme heads
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I thought I would post this dyno since you do not see much info on these heads. Engine set up is tsp 233/239 cam, 78mm fast intake and throttle body, welded and ported flowtech headers, ported factory maf, 3" to 4" y pipe with 4" cutout. Edelbrock heads were also taken apart and cleaned up with sanding roll as the heads are quite rough in areas where cnc meats the cast areas.
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I've seen a lot of these graphs lately and could be wrong but I thought that the HP and Torqe should always cross at 5250rpm. No matter what. On this graph they cross past 5700rpm. Whats with that?