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  1. #1
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    300x block question?

    Are 300x reman blocks the same as 300x original factory blocks?
    Last edited by malexie; 01-27-2024 at 10:48 PM.
    XR2001 & XB2002

  2. #2
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    Anyone know about this?
    XR2001 & XB2002

  3. #3
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    One would assume that if you are buying a reman 300x from Mercury .. that you are actually getting a correct block back.
    Before laying out you money, I would go to the source to get conformation ..

  4. Likes NICE PAIR liked this post
  5. #4
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    Any update about that?

  6. #5
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    I have both a black painted and gold plated 300x powerheads from Mercury Racing same part number on the invoices 61-840756A04. Mercury Racing told me the painted block is 100% new not remanufactured?

  7. #6
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    Back to square # 1`. If it's a real 300x it will have an 1.715 x 2.330 ex. port.
    And the ex. log's won't have "speed rail's" in the floors.
    No matter what color it's painted.

  8. Likes JOSEPH SHULMAN liked this post

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