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Old 05-11-2010, 06:56 PM
mpanten mpanten is offline
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Join Date: Feb 2005
Location: Perrysburg, OH
Cobra Make, Engine: SPF #298 427 FI
Posts: 497
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No Im not sure, I have new header gaskets too and they may need tightened. Im just frustrated that I cant find anyone with a dyno to tweak this thing. When I had it rebuilt they dynoed it with a carb and it made 600 hp with no adjustments. The backfires are pretty loud and concering. I should change them first before I go the carb route but im just looking at options.
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