Slant six identification experts: How about this?

Slant 6 Engines

  1. cruiser

    cruiser Well-Known Member

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    Hi All: Are you an expert on what the numbers molded into a slant six engine block mean? Here's what I've got on the left side of my engine block:

    2806830 6

    132 4 BH

    AAWJ

    4G251846 (stamped on a pad on upper right rear of block)

    Any and all ideas are welcome. Thanks!
     
  2. Alaskan_TA

    Alaskan_TA Well-Known Member

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    4G so it is from a car built for the 1974 model year at the St. Louis plant.

    They were making A and B bodies that year.
     
  3. bcschief

    bcschief Well-Known Member

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    The 4G251846 is a partial VIN number see if it matches your car if it does it's the original engine. Look under the alternator bracket and read the numbers on the edge of the deck and post them.
     
  4. J Glenn

    J Glenn FABO Gold Member FABO Gold Member

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    FYI: It's junk. You should sell that engine to me!
     
  5. cruiser

    cruiser Well-Known Member

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    bschief: I checked and couldn't find any numbers under the alternator bracket. I did find some markings molded into the block under the fuel pump. The first was an arrow pointing to the numbers 1 - 2 - 3 , and the arrow was pointed at the number 2. To the rear of this was what looked like a clock symbol, with an arrow in it pointing to the four o'clock position. Any ideas?
     
  6. cruiser

    cruiser Well-Known Member

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    To J Glenn:
    Huh?
     
  7. J Glenn

    J Glenn FABO Gold Member FABO Gold Member

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    I've been looking for a /6 for two years and I never find them locally. So... you "upgrade" to a 318 and sell me your /6 ;-)
     
  8. bcschief

    bcschief Well-Known Member

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    2nd shift and 4pm was when it was cast. Look straight down at the top of the ignition coil the pad is behind the coil you may have to clean it off with brake clean to read it.
     
  9. cruiser

    cruiser Well-Known Member

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    bschief: What exactly is it that I'm looking for on this pad behind the coil?
     
  10. bcschief

    bcschief Well-Known Member

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  11. cruiser

    cruiser Well-Known Member

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    Okay, just found it. The pad below the right front top corner of the block, right under the cylinder head, says:

    W 225 681


    So what does this mean?
     
  12. bcschief

    bcschief Well-Known Member

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    W= Windsor engine plant 225= displacement 681 should be a date code but it makes no sense look again and see if you missed a digit most likely before the 6
     
  13. cruiser

    cruiser Well-Known Member

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    You're right. The number is actually 4681. Whaddya think?
     
  14. bcschief

    bcschief Well-Known Member

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    4681=Wednesday May 22 1974 on Chryslers 10,000 day calendar
     
  15. cruiser

    cruiser Well-Known Member

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    Got it, thanks. Any ideas as to what the "BH" and "AAWJ" mean?
     
  16. bcschief

    bcschief Well-Known Member

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    The BH blocks are the best forged crank blocks per Doug Dutra. He is a slant six guru and has even written a book on them. Here is a link to his book Amazon.com : slant six book
     
  17. bcschief

    bcschief Well-Known Member

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    Does that partial vin match you cars vin ? The aawj I am not sure.
     
  18. cruiser

    cruiser Well-Known Member

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    It does not match my car. The tranny is numbers matching, but the engine isn't. The engine is a parts store replacement engine installed in 1988. It is a 1974 block, but had an incorrect 1976 head on it, which I changed out for the correct head. It runs really well, though.
     
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