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Old 12-21-2010, 09:25 PM   #2
Rob Petrie E395
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Join Date: Dec 2007
Location: Woodlawn IL
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Default Re: Staging light beam height

the car has to be 3 inches. According to Porta Tree website the beam should be 2 inches. If you goto thier site and look under instructions and click on the one that reads "instructions for setting up a accurate drag race starting line" is where I found the 2 inch deal.
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