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Dodge Hemi

Discussion in 'New to the H.A.M.B.? Introduce yourself here!' started by panama63, Mar 31, 2012.

  1. panama63
    Joined: Mar 31, 2012
    Posts: 2

    panama63
    Member
    from Fargo, ND

    Hi All, I'm new to this board and I am looking for some info. I have a line on a 55 hemi 270 the I'm told was from a truck. What is the difference between the Dodge hemi in the car vs a truck? We currently have a 270 poly in a 55 Dodge 2dr hardtop and would like to go to a hemi. My dad thinks there is a big difference in these engines, but I can't find any info to confirm or deny that they are the same or different. I will appreciate any information you can give me. Thanks, Steve.
     
  2. tommyd
    Joined: Dec 10, 2010
    Posts: 11,946

    tommyd
    Member
    from South Indy

    Welcome from Indy. Post your question on the main board. Lots of Hemi speak over there.
     
  3. 343w
    Joined: Dec 15, 2008
    Posts: 1,486

    343w
    Member

    Welcome aboard, I'm new to the hemi world as well, look into some of the hemi tech posts, it will help you along.
     
  4. visit with KATYFATTRODDER or maybe it is one "t" in fat. He has built 3 270's in the past 2 weeks.
     

  5. moparmonkey
    Joined: Aug 14, 2009
    Posts: 565

    moparmonkey
    Member
    from NorCal

    Welcome!

    You should definitely check out the hemi tech pages here...

    http://www.jalopyjournal.com/forum/showthread.php?t=118764

    But, to give you a short answer- A '55 Dodge 270 hemi is pretty much the same, car or truck makes almost no difference at all.

    Also, a '55 270 poly is the same exact block as a 270 hemi. The only difference is the heads and the pistons. Any of the Dodge hemi heads (241/270/315/325) will bolt right to a 270 poly block. Change the pistons to keep the compression right and have the cam reground and you're off.

    But seriously, check out the hemi tech pages!

    [​IMG]
     
  6. mart3406
    Joined: May 31, 2009
    Posts: 3,055

    mart3406
    Member
    from Canada

    It depends how big of a truck. If it's
    from a half-ton pick-up, it's probably
    exactly the same as the standard
    2bbl car version. The 270's used in
    the bigger trucks had lower
    compression and a cam orientated
    more for low rpm torque rather than
    higher rpm horsepower. But other
    than that, there's no real difference.
    If you're going to rebuild the engine,
    you're probably gonna' replace the
    stock, original pistons and cam
    anyway, so starting with a truck
    engine shouldn't pose any problems.

    Mart3406
    ==========
     
  7. rustednutz
    Joined: Nov 20, 2010
    Posts: 1,580

    rustednutz
    Member
    from tulsa, ok

    Welcome from Tulsa. Good luck on your Hemi conversion. Nothin' like the looks of an old Hemi.
     

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