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V-8 Block Deck Thickness

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  • V-8 Block Deck Thickness

    Anyone know the block deck thickness on the 259/289 V-8 and the cylinder bore centerline dimensions?

    Start and Stage Your Studebakers

  • #2
    The bore centerline is 4.5 inches. I will need to look to see what the nominal deck thickness is. You should measure it if you need to know for sure on a particular engine. By the way the deck height is 10.065 /10.060 as it left the factory.

    David L
    David L

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    • #3
      Ok thanks, the new GM Rocket SBC racing blocks have a .625" thick deck with .275 cylinder walls and I was curious as to how an old Stude block compared.

      Start and Stage Your Studebakers
      Start and Stage Your Studebakers

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      • #4
        I went out in the garage and measured 2 V8 blocks I happen to have sitting there. Tough to get an exact measurement given the figure with the tool I had at hand but it looks like they're a shade over .4" in thinckness. I measured anywhere from .4" to .425"

        Miscreant at large.
        No deceptive flags to prove I'm patriotic - no biblical BS to impress - just ME and Studebakers - as it should be.

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        • #5
          Mr. Biggs, for those of us who are uninformed as to what term "deck thickness" means, can you enlighten us?
          Thanks,
          Dan

          1960 Lark Convertible
          1962 GT Hawk
          Dan Peterson
          Montpelier, VT
          1960 Lark V-8 Convertible
          1960 Lark V-8 Convertible (parts car)

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          • #6
            Deck thickness = the distance between the top machined surface of the block (head gasket sealing surface) and the very uppermost part of the water jacket. Thicker = better for strength, although not necessarily for weight or heat transfer.

            nate

            --
            55 Commander Starlight
            62 Daytona hardtop
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            55 Commander Starlight
            http://members.cox.net/njnagel

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            • #7
              The area next to the cylinder walls is 11/32 or about .344 per the drawings. There is of course some tolerance on this so they can be thinner or thicker. When I get a chance I will measure a few blocks to see how they check out.

              David L
              David L

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              • #8
                Thanks for the interest on this. Has anyone cut up a scrap block into segments for close study? I have cut a head up and the "autopsy" was quite revealing as to where the meat and bones are in the structure. The more I study these blocks the more impressed I am with the standard 232 block size especially for superboosting.

                Start and Stage Your Studebakers
                Start and Stage Your Studebakers

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                • #9
                  Unless you have a useless block I wouldn't like to see on cut to check for thickness. If someone wants to know some dimmensions I can supply them. I have never seen a block that had less thickness than specified. You can also use ultrasonic testing to find out how thick an actual block is in various locations.

                  David L
                  David L

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