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Thread: hz engine number

  1. #1

    hz engine number

    Howdy ,was wondering bout engine number for my hz .... van is 9-77 build motor 31 K 8 engine number NR122xx ....my guess was an early engine change in its life what do you guys think?

  2. #2
    Cruiser
    Join Date
    Sep 2013
    Location
    Eastwood, NSW
    Posts
    366
    NR prefix is a 253 V8 Nasco/GM P&A block.

    Dr Terry

  3. #3
    Sandman Guru
    Join Date
    Jul 2010
    Posts
    6,451
    If you are missing your original 253 keep the NR block. It is better than any other 253 other than your original. Cast dates mean nothing with replacement engines, any will do.

  4. #4
    Ok thanks ..... this is the motor in the van ...dont have the original.

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