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    5.3l flex fuel motor swap for a 5.3l gas

    Hello gents, am I able to take a 5.3 flex fuel motor with the eighth digit in the VIN number is 0 which makes mine if I three iron black flex fuel motor am I able to put just a regular 5.3 L to replace the flex fuel but do I have to change out the PCM?
  2. P

    Engine oil pressure issue

    Engine oil pressure gauge fluctuates along with lower rpm and a muffled backfire on passenger side between the speeds of 40-70 I have replaced the oil pressure switch the oil pump along with the oil pick up tube. Rearmain seal. Spark plugs What could be the issue?

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