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flex fuel injectors?

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Old 03-23-2009, 09:04 PM
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Default flex fuel injectors?

just wondering how many pounds per hour that they can be maxed out at in an 06 silverado with a 5.3 have been looking at doing a cam and head swap and just trying to get things in order .thank you
Old 03-23-2009, 09:10 PM
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I don't know, but if you are going to change them, you may as well get 42# injectors. You can get a used set in the classifieds for $200-250
Old 03-23-2009, 09:21 PM
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are they the same as the return style injectors?
Old 03-23-2009, 10:02 PM
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I was told my Magnacharger that my 03 Flexfuel injectors were 38# and could have ran them with supercharger, bc that is actually how they sell the flexfuel kit w/o injectors. Bought a used Radix that already came with 42# so I never tested it.
Old 03-23-2009, 10:08 PM
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Efi live says mine are 35#. I never seen more than 50% duty cycle on mine
Old 03-23-2009, 10:09 PM
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What I want to know is what kind of injector are they? Regular truck injectror? Ls2? What are they?
Old 03-24-2009, 12:06 AM
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i think there rated at 32lbs . they have 4 holes/
Old 03-24-2009, 11:14 AM
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Hey guys. He is actually asking about my truck. I bought a set of injectors just in case I needed them, and If I don't I'm going to sell to "teamblackandred". How many pounds are my stock injectors good for? I have a 2006 RCSB Regency 5.3 2wd. It started its life off as a w/t from the factory. Thanks.

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Old 03-25-2009, 08:41 AM
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Somebody must know the answer.. Are all 05+ 5.3 trucks flex fuel?
Old 03-25-2009, 10:07 AM
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No they are not. The easiest way to tell is to have the computer read. If the injectors are like 33lb or whatever. Or if the gas cap is yellow. And my truck has alumin fuel rails as well


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