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  1. #1

    Join Date
    Jan 2013
    Posts
    12

    Default Shovelhead side or end Oiler?

    So Iíve got an 80Ē motor Iím messing around with, the numbers on the motor say itís a 1979, but the cam cover that came off is a 25218-70 which is 70-73 it appears the cam cover was welded and rechromed. So do I have a side oilier or end Oiler? Anyway to determine by just looking at it?
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  2. #2
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    Lots of motors burnt up cause of those oil port locations not being in the same spot ....

    Aftermarket covers are made with the cover having a slot cut into em to cover both runs ...

  3. #3

    Join Date
    Dec 2018
    Posts
    1,674

    Default

    First, and IMPORTANT: The number cast inside the cam cover (and this goes for a lot of cast HD parts) IS NOT THE FUCKIN' PART NUMBER!!!
    You cannot go by that number to identify any individual part. In this case, for instance, that casting was used to make both side oiling and end oiling cam covers. That finish machining, as well as the cosmetic finish, determines what part number that casting ends up being.

    You can check your cam cover easily: If the oil through the feed hole in the gasket surface comes out through a hole in the pinion bushing, it's a side oiler. If the oil comes out behind the bushing and through it, it's an end oiler. Simple.

    Some side oiling covers have been converted to end oiling by changing the bushing, but be aware that there is a bleed hole that must be plugged when doing this. And the hole in the gasket surface is in a different place on the side oiler compared to the end oiler.

    And lastly, double check your pinion shaft, if it's got a through hole from the outer end, it's an end oiler.

    Dollars to donuts your parts are fine, but there have been a lot of mistakes with these parts over the years, so it's good you are aware of it, and checking.

    Jim

  4. #4
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  5. #5

    Join Date
    Jan 2013
    Posts
    12

    Default

    Thanks guys I really appreciate the input. ����

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