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Thread: Change in Exhaust Manifold for 1950 Commander

  1. #1
    President Member TWChamp's Avatar
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    Change in Exhaust Manifold for 1950 Commander

    Does anyone know what changed in the Commander exhaust manifold during 1950?

    The parts book lists 515932 for engines before H391,863. 14A-17A
    The parts book lists 525769 for later engines.

  2. #2
    President Member Dwain G.'s Avatar
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    The early one has a two-stud exhaust flange. Apparently flange gaskets were being blown out often enough that they changed to a three-stud flange. However, a bulletin also says that by removing one stud and moving another to the provided hole , the new manifold can be used as a two-stud manifold.

  3. #3
    President Member TWChamp's Avatar
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    OK, thanks. I thought I was going to have to buy a manifold, but I'll try to free up my heat riser.
    The engine runs great the way it is, so maybe I should leave it stuck.

  4. #4
    President Member thunderations's Avatar
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    As long as it's stuck open, not part way closed.
    Quote Originally Posted by TWChamp View Post
    OK, thanks. I thought I was going to have to buy a manifold, but I'll try to free up my heat riser.
    The engine runs great the way it is, so maybe I should leave it stuck.
    1966 Daytona (The First One)
    1950 Champion Convertible
    1950 Champion 4Dr
    1955 President 2 Dr Hardtop
    1957 Thunderbird

  5. #5
    President Member Dwain G.'s Avatar
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    I think the early/late parts for the heat riser are different also.

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