Register now to get rid of these ads!

Hot Rods Need Help Identifying a 426 Hemi Block

Discussion in 'The Hokey Ass Message Board' started by BigDutchBag, Sep 21, 2015.

  1. BigDutchBag
    Joined: Sep 21, 2015
    Posts: 2

    BigDutchBag
    Member
    from California

    My motor is currently being rebuilt do to some major issues cause by the last person who built it for my grandfather before i inherited the car. During this time im trying to find out a little more about this motor and learn its history.

    Serial number is MN426293851869

    So far i have its Marysville Plant, 426 cu.in, August 13,1969.

    Here is where im lost. # 51869 after the date code is that the serial number? Any what the 2 and F stampings above?

    [​IMG]
     
  2. dusterdave173
    Joined: Dec 30, 2010
    Posts: 226

    dusterdave173
    Member

    whats on top pad show a pix
     
  3. 56sedandelivery
    Joined: Nov 21, 2006
    Posts: 6,293

    56sedandelivery
    ALLIANCE MEMBER

    5-13-69 would be MAY 13, 1969; as far as any of the other numbers...........................................................I am Butch/56sedandelivery.
     
  4. Jalopy Joker
    Joined: Sep 3, 2006
    Posts: 25,149

    Jalopy Joker
    Member

    search online for (link does not seem to work): www.moparts.org/Tech/Archieve/motor/36.html - 1968 & later had the numbers stamped on the lower rail of the engine's right side match the last 8 digits of the car's VIN. MN= Marysville Plant
     
    Last edited: Sep 21, 2015

  5. Big_John
    Joined: Mar 28, 2006
    Posts: 326

    Big_John
    Member
    from Upstate NY

    In the lower number.
    MN= Marysville plant
    426 = CID
    2938= date code based on 10,000 day Julian calendar. Aug 13, 1969
    51869 = serial number
     
  6. Big_John
    Joined: Mar 28, 2006
    Posts: 326

    Big_John
    Member
    from Upstate NY

    The F should be for the 1970 model year. That aligns with the August 1969 date. 2 might be second shift, but I can't verify that. the May date ???? It doesn't quite make sense, especially since they used "1" for the dashes. That may be the handiwork of someone else.
     
  7. kinda with John...but I just think that's a part #....for 1969....part #'s started with "29"....and the rest of the #'s are the same # for a part #....could it be a replacement block # ?
     
  8. BigDutchBag
    Joined: Sep 21, 2015
    Posts: 2

    BigDutchBag
    Member
    from California

    There was nothing that i could tell, but again i dont have the block right now and is being machined.

    I have no clue. I was able to find the original guy who got the motor 15 years ago in PA but he didn't have much information on it. I've gotten word that the block was pretty beat up and could have been baked over the years. They had to machine the cam tunnel, bear cap area, and a few others things so its been through a lot.
     
  9. 73RR
    Joined: Jan 29, 2007
    Posts: 6,368

    73RR
    Member

    ...basic questions here...but does the block have cross-bolt mains? and are there head bolt bosses inside the valley ?
    Like I said, basic questions, and like Big_John I am also curious about the '1' being used as a 'dash'.
    Yes, over-the-counter blocks did not have any ID codes stamped so it could be a replacement. Is that important to your project?

    .
     
  10. The may date would have been when the engine was assembled. The second date would have been when the serial number was assigned that doesn't happen until the car is built.
     

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2020 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.