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Old 06-04-2007, 07:20 AM   #15
gator2511
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Join Date: Mar 2005
Location: tampa florida
Posts: 776
Re: Checked my MPG today

I went to Vortec heads, a cam kit, a new exhaust system and my mileage dropped from 13 to 11. However I read the plugs and they are black from running rich, so I'm playing with the jets to see what I can do. Just changing the heads probably won't do that to you though.
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