52 Hydro w/ 56 308 questions

GrimGreaser
GrimGreaser Senior Contributor
edited February 2013 in HUDSON
I just got a 56 motor (thanks Don!) to replace the buggered up one in my 52. So, looking at things... the bolt patterns are different between the 56 crank flange and 52 hydro flywheel. Now, in addition to the spacer from 21st Century - I take it I'll need a different flywheel (can I just modify mine?) and/or torus cover (I did a quick search...but want to make sure)? I'm not adverse to switching cranks either, just want to know where I stand.

Comments

  • GrimGreaser
    GrimGreaser Senior Contributor
    Can I just modify my flywheel to accept the new bolt pattern ect... Still using the spacer of course.
  • russmaas
    russmaas Senior Contributor
    Just use a 55/56 flywheel with the spacer if you got one. There are plenty out there if you dont. I have some extra's
  • maasfhcenturylinknet
    maasfhcenturylinknet Senior Contributor
    May have extra 55/56 flywheels--will check if you want.
    Randy
    309-267-6158
  • GrimGreaser
    GrimGreaser Senior Contributor
    edited February 2013
    Thanks, I sent Russ a PM earlier.

    Could I modify my flywheel though? I have a cnc at work and access to a lathe. Or are there other differences between the two.
  • maasfhcenturylinknet
    maasfhcenturylinknet Senior Contributor
    Yes, that would work just fine.
    Randy
  • GrimGreaser
    GrimGreaser Senior Contributor
    Nice reminder. I was planning a timing mark up front on the dampener, my custom mini starter is a bit in the way of the flywheel window. It's nice to keep things lined up properly though.
  • TwinH
    TwinH Senior Contributor
    Here's a couple pics of a timing tab that the previous owner fabbed for the 308 in my 49.

    image

    image
  • Neat little addition
    Roger :D
  • maasfhcenturylinknet
    maasfhcenturylinknet Senior Contributor
    Good Job
    Randy
  • the 308 that I just took apart has been modified and seems to be a 54. What are the differences
    in length of the flange on the crank and what is the starting point of the measurement?
    Thanks Dan
  • Thanks for the reply. Dan
  • hudsontech
    hudsontech Senior Contributor
    If you can find the engine number 1954 serial numbers (engine number the same) run 269060 thu 319720

    Hudsonly,
    Alex Burr
    Memphis, TN
  • The engine number is 5321039 found on the engine deck surface on the extention of the deck on the distributor side. The casting number is 5325000. The other numbers are L125. CWC is under the casting number These numbers are under the distributer. Thanks Dan
  • I would say it is a replacement as i took it out of a late 52 hornet sedan.
  • 53jetman
    53jetman Senior Contributor
    It's not likely that a replacement engine would have a vin number stamped into the block
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