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Discussion in 'The Hokey Ass Message Board' started by Dar100e, Mar 16, 2011.

  1. Dar100e
    Joined: Jan 24, 2009
    Posts: 38

    Dar100e
    Member
    from england

    Can you use sbc 327 pistons, conrods and crankshaft out 1967 into 1974-75 block?
     
  2. 53sled
    Joined: Jul 5, 2005
    Posts: 5,817

    53sled
    Member
    from KCMO

    yes, you might have to run main spacers, if it is a real 67 or earlier crank
    but the deck height and bore are the same, 327 or 350.

    mortec is available in archive format.
     
  3. 53sled
    Joined: Jul 5, 2005
    Posts: 5,817

    53sled
    Member
    from KCMO

    I don't know if this will work.

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    smallblock V-8, "W" 348-409 and big block V-8 engines.">
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    <TITLE>MorTec Chevy V-8 Crankshaft Journal Sizes</TITLE>
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    <CENTER><IMG SRC="image021.gif" ALT="MorTec Chevy V-8 Crankshaft Journal Sizes" HEIGHT=50 WIDTH=283>
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    <BR>
    <CENTER><h1>CHEVY V-8 Crankshaft Journal Sizes</h1></CENTER>
    <br>
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    <P><B>Here's a list of Chevy V-8 crankshaft journal sizes. All journal sizes are given in "STANDARD"
    sizes. Your crankshaft may have been cut down in size previously by a machine shop. Make
    sure your crank will work in the block you have. Blocks were made for each crank main journal
    size. If you are putting a "small" or "medium" journal smallblock crank into a "medium" or "large" journal smallblock
    block you will need crank bearing "spacers" or use special "thick" bearings available from
    aftermarket suppliers.</B>



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    <strong><FONT SIZE=+2>CHEVY SMALLBLOCK V-8 Crankshaft Journal Sizes</FONT></strong>




    <PRE><B>
    <U>Gen.I, "Small Journal"</U>
    <P>265...Mains-2.30"-Rods-2.00"
    283...Mains-2.30"-Rods-2.00"
    302...Mains-2.30"-Rods-2.00"
    327...Mains-2.30"-Rods-2.00"
    <P>
    <U>Gen.I, "Medium Journal", includes "Vortec" 305 and 350 thru '98</U>
    262...Mains-2.45"-Rods-2.10"
    267...Mains-2.45"-Rods-2.10"
    302...Mains-2.45"-Rods-2.10"
    305...Mains-2.45"-Rods-2.10"
    307...Mains-2.45"-Rods-2.10"
    327...Mains-2.45"-Rods-2.10"
    350...Mains-2.45"-Rods-2.10"
    <P>
    <U>Gen.I, "Large Journal"</U>
    400...Mains-2.65"-rods-2.10"
    <P>
    <U>Non-production Gen.I combination, using Gen.I 400 crank in Gen.I 350 block</U>
    383...400 crank, Mains cut to 2.45"-Rods-2.10"
    <P>
    <U>Non-production Gen.I combination, using Gen.I 350 crank in Gen.I 400 block</U>
    377..."Spacer" or "thick" main bearings with 350 crank-Rods-2.10"
    <P>
    <U>Gen.II, "Medium Journal", includes "L-99" 265, "LT-1" 350, "LT-4" 350</U>
    265...Mains-2.45"-rods-2.10"
    305...Mains-2.45"-Rods-2.10"
    350...Mains-2.45"-Rods-2.10"
    <P>
    <U>Non-production Gen.II combination, using Gen.II 265 "L-99" crank in Gen.II 350 block</U>
    302...Mains-2.45"-Rods-2.10"
    <P>
    <U>Gen.III, includes '97-2005 "LS-1" Corvette, Firebird, Camaro</U>
    345...Mains-2.558"-Rods-2.10"
    <P>
    <U>Corvette "ZR-1", DOHC, "LT-5"</U>
    350...Mains-2.76"-Rods-2.10"
    </PRE></B>

    <BR>

    <B><FONT SIZE=+2>CHEVY BIG BLOCK V-8 Crankshaft Journal Sizes</FONT></B>



    <PRE><B>
    366T
    396
    402
    427
    427T
    454
    502
    <P>ALL Chevy big blocks used...Mains-2.7488"-2.7495"---Rods-2.20"
    </PRE>

    <strong><FONT SIZE=+2>CHEVY 348-409 "W" MOTOR V-8 Crankshaft Journal Sizes</FONT></strong>


    <PRE><B>
    348
    409
    427 "Z-11"
    <P>ALL "W" family motors used...Mains-2.50"-Rods-2.20"

    </PRE>

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    Last edited by a moderator: Jun 1, 2014
  4. gwarren007
    Joined: Apr 3, 2010
    Posts: 379

    gwarren007
    Member

    You might want to sell the small journal 327 C/R if you can't find a SJ block, and build a 350 instead.
     
  5. Dar100e
    Joined: Jan 24, 2009
    Posts: 38

    Dar100e
    Member
    from england

    Thank for the advice
     

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