Page 62 of 62 FirstFirst ... 1252606162
Results 611 to 614 of 614

Thread: Anything new from the straight 8 hot rodders?

  1. #611
    Join Date
    May 2010
    Posts
    16
    Rides
    0
    My Feedback

    (0% Positive Feedback)
    Rep Power
    0

    Double vs Single cam

    Quote Originally Posted by bob k. mando View Post
    any particular reason why the OHC design is single cam rather than double?

    i should think the DOHC would actually be more straight forward, if you got rid of the rockers and just used cam followers.
    Went with the single cam design as these old long stroke/long rod engines are not going to turn 7000 rpm or so.
    No need to spend the money on a high rpm engine if the lower end blows at maybe 6,000 or so. The old 320 inch Buick doesn't have 9 main bearings like the old Packard straight 8 flathead did.

    Cam followers instead of rockers would be another approach that I should explore down the road. I am trying to keep the modifications and costs down.

    There is a bit of a problem with the rocker design and it involves how to make them. If you were to make forgings you need forging dies ($$$$). If you cast then you'll want to make them of cast steel not gray iron.

    Thanks for your response.


    › See More: Anything new from the straight 8 hot rodders?


  2. #612
    Join Date
    Nov 2008
    Posts
    322
    Rides
    0
    My Feedback

    (0% Positive Feedback)
    Rep Power
    0
    Maybe Blake Machine in Phoenix can help with the rockers. We went with T&D Machine products and their site has all of the specs listed. We were able to find off the shelf arms with roller shaft and tips. Have never hurt one. Doug

  3. #613
    Join Date
    Apr 2004
    Posts
    4,317
    Rides
    0
    My Feedback

    (0% Positive Feedback)
    Rep Power
    0
    i wasn't suggesting that for rpm purposes, i was just thinking more for parts reduction.

    wouldn't you also design for lighter spring pressures for the valves with a cam directly actuating the valve tip?
    The way to crush the bourgeoisie is to grind them between the millstones of taxation and inflation.
    Vladimir Lenin

    Government schooling is about "the perfect organization of the hive."
    H.H. Goddard, Human Efficiency (1920)

  4. #614
    Join Date
    May 2010
    Posts
    16
    Rides
    0
    My Feedback

    (0% Positive Feedback)
    Rep Power
    0

    Attached Buick 320 Head Gasket File

    Attached is a Buick 320 drawing of the head gasket. This is a .STP CAD file that can be opened by virtually any CAD software. Oops, looks like this file type isn't allowed to be sent. Dang, I was going to give this away. OK I'll just send a .jpg (pictorial) file. Bummer!! If anyone would like the real CAD file, just e-mail me at: dlomshek@pittstate.edu.

    No, I am not trying to invent gaskets, but for anyone contemplating radically modifying a 320 cylinder head or playing with the idea of building/designing a new one this CAD file allows you to easily obtain all of the hole sizes and spaceings etc. This is not just a picture; it's a real drawing accurately created.

    It would be so fantastic to have access to the old cylinder block drawings. Better yet, would be if someone had created a modern CAD file of it. You would either have to have original design drawings or an old block to cut up and measure to get dimensions to create the 3D CAD file. The amount of time/effort required would be staggering.

    dlomshek
    Attached Images Attached Images

Similar Threads

  1. Not sure what this is on my Straight 8
    By PFJN in forum Straight Eights!
    Replies: 4
    Last Post: 08-16-2013, 09:42 PM
  2. Straight Eight 248 or 263 ?
    By drcook in forum Straight Eights!
    Replies: 3
    Last Post: 06-26-2012, 12:32 PM
  3. Straight 8, 4 bbl, What do I need?
    By Faust in forum Straight Eights!
    Replies: 10
    Last Post: 09-04-2010, 04:44 AM
  4. 263 straight eight
    By mcubie in forum Nailhead: 264, 322, 364, 401, 425
    Replies: 1
    Last Post: 09-22-2009, 01:15 AM
  5. looking for 248 straight 8
    By harrybar in forum Straight Eights!
    Replies: 13
    Last Post: 07-24-2006, 01:39 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Featured Items