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506hp ls1 383 Edelbrock RPM Xtreme heads

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Old 06-08-2010, 07:34 PM
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Default 506hp ls1 383 Edelbrock RPM Xtreme heads

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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Old 06-08-2010, 07:44 PM
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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?
Old 06-08-2010, 07:59 PM
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nice numbers, makes me wana do a 383
Old 06-08-2010, 08:07 PM
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They do, If you look at the graph again you will see that torque is scaled different on the left side to hp on the right side.
Old 06-08-2010, 08:46 PM
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a very similar setup and results as my 383.

my hawk has a 234/238 cam, AFR 205 heads, 90 fast/tb, putting down 490rwhp and 455 torque. But I'm jealous - you hit the 500 mark!



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