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History Another 327 ID question

Discussion in 'The Hokey Ass Message Board' started by unclmx, Jun 11, 2012.

  1. unclmx
    Joined: Feb 12, 2012
    Posts: 58

    unclmx
    Member
    from Atlanta Ga

    My father in law has a chevy small block in his basement and he called me to say he's never gonna use it and would I sell it? I said sure, but I gotta know what it is. He thought it was a 327 but wasn't sure. I told him to get the numbers for me and I'd see if y'all would tell me what it is. Heads are 3917290, The block has these numbers on it, as he sees 'em:
    TO830HJ
    18D1108620 (stamped)
    688H6660 (cast)
    Thanks!
     
  2. 37_chevy
    Joined: Aug 8, 2010
    Posts: 168

    37_chevy
    Member
    from Nebraska

  3. henry29
    Joined: Sep 5, 2007
    Posts: 2,880

    henry29
    Member

    I don't recognize that casting number and can't find anything on it.

    If the heads are original to the engine then the HJ suffix would make it a 1968-69 250 horse 327 from a full size car.

    Can you get the casting number off the left rear of the block, right behind the head?
     
  4. Russco
    Joined: Nov 27, 2005
    Posts: 4,397

    Russco
    Member
    from Central IL

    The 18D1108620 Denotes it as a 68 well actually the 8 does, the D would be the assembly plant and the 1108620 is the sequential build number.
     
  5. biscaynes
    Joined: Mar 16, 2008
    Posts: 1,647

    biscaynes
    Member

    if you have the correct last three digits, it's probably a 3814660 cast number. '68-'69 327 4" bore block
     
  6. unclmx
    Joined: Feb 12, 2012
    Posts: 58

    unclmx
    Member
    from Atlanta Ga

    Thanks y'all. We appreciate the numbers crunch. Whadda think it's worth? $250 - $300? It's a used long block
     
  7. mike in tucson
    Joined: Aug 11, 2005
    Posts: 536

    mike in tucson
    Member
    from Tucson

    An HJ stamp means it could be:
    65 Corvette 327 300hp manual trans L-75 4bbl
    68 Impala 327 250hp PG L-73 4bbl
    there are also two 350ci engines with an HJ stamp
    69 Impala 350 250hp turbo 400 L-65 2bbl
    78 Pontiac 350 170hp 350turbo LM-1 4bbl (Firebird or Phoenix)

    There is a block casting code.....if the heads and block are the original pair, there is a head casting code under the valve cover of each head.

    mike
     

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