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Old 09-26-2010, 05:53 PM   #1
turner72
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Join Date: Jun 2010
Location: Huntingtown, MD
Posts: 24
Need Help

Not sure if this is a problem or not. I have a 71 350/350 with the LMC dual exhaust with glasspack style mufflers. When you let off the gas at speed I get kind of a blatty backfire sound from the exhaust. Other than that the engine runs great. Is this normal with the glasspacks?
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