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Octane rating for the 5.7

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Old 10-27-2008, 09:41 AM
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Default Octane rating for the 5.7
I have searched with no luck.

Does anyone have the recommended octane rating for the 5.7 hemi? Just wondering what kind of fuel my truck will use.

thanks.
 
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Old 10-27-2008, 12:33 PM
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Recomended 89, but will work with 87.
 
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Old 10-27-2008, 01:34 PM
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Thank you.
 
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Old 10-27-2008, 01:56 PM
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it gets slightly less mpg with low grade then 89, did the same thing when i programmed mine with the superchips low grade vs supreme.
 
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Old 10-27-2008, 01:59 PM
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I'll need to do a little research on that superchips programmer.
 
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Old 10-27-2008, 07:29 PM
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We haft to wait till almost 2010 for it to come out for the 09, I havent even seen a K&N air intake for the 09 yet and their usually way ahead.
 
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Old 10-27-2008, 11:35 PM
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I waited 2 years for the K&N's on my motorcycle...
 
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