
08-01-2009, 05:05 AM
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CC Member
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Join Date: Nov 2006
Cobra Make, Engine: Superformance MIII, Roush 427
Posts: 320
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Not Ranked
From what I understand about the light in the car is they set a light attached to the tach to a specific RPM to get their speed. Nascar allows a 5mph window, some set the light close to that limit, which with 750++HP, set the light at say...58mph, twitch your right big toe and now you're over by 5.11 
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