The numbers I've seen vary with time of day, temp, altitude, humidity, gas, tuning, gears, etc. and especially by dyno. Numbers should be SAE corrected, i.e. conservative, and not all are. 430 to 440 are more normal for hp (mine did 450 rwhp and 490 rwtq with 3.55's). I was told by WCV that these were a bit higher than normal.
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