73 472 Which HEI units fit? Will a BBC HEI fit?
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RWD 19xx-1984 DeVille and Fleetwood,
1985-1996 Fleetwood and Brougham Forum Discussion, 73 472 Which HEI units fit? Will a BBC HEI fit? in Past Cadillac Vehicle Discussion; Will a BBC hei distributor fit our cars? If not is there a way to make them fit? I was ...
  1. #1
    YourMainParadox is offline Cadillac Owners Fanatic
    Automobile(s): 1974 Cadillac Hearse 472
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    73 472 Which HEI units fit? Will a BBC HEI fit?

    Will a BBC hei distributor fit our cars? If not is there a way to make them fit?
    I was looking at this and it is a good deal for what it is and would be great on my hearse.
    http://cgi.ebay.com/ebaymotors/ws/eB...=STRK:MEWAX:IT

    I was told that the HEI distributor for a 500 is part # 1102354 but I have yet to see any listed besides really expensive ones. Are there any different part numbers to search for and what year and model caddies can I swap them from?

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  3. #2
    csbuckn is offline Cadillac Owners Master
    Automobile(s): 84 Coupe w/500
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    Re: 73 472 Which HEI units fit? Will a BBC HEI fit?

    the chevy ones dont fit, they are too short. Caddy put HEI on their motors around 73/74. You can grab one from that time frame. I believe I'm using one from a 77/79 deville with a 425 motor.

  4. #3
    YourMainParadox is offline Cadillac Owners Fanatic
    Automobile(s): 1974 Cadillac Hearse 472
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    Re: 73 472 Which HEI units fit? Will a BBC HEI fit?

    I found on google that: 74-79 Cadillac with a 472/500/425 came with HEI except the Seville.
    Also 368 HEI wont work because it is 3/4 of an inch longer shaft and has a second computer controlled module instead of vacuum advance.

    Mine is a 73 so it was not that year for sure. Can anyone verify this info? Also should this be added to a sticky or FAQ someplace since it comes up a lot but never seems to get a detailed answer?

  5. #4
    deVille33 is offline Cadillac Owners Connoisseur
    Automobile(s): 1977 Coupe (blue), 1977 Coupe (yellow), 1977 Coupe (green)
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    Re: 73 472 Which HEI units fit? Will a BBC HEI fit?

    The early ( 1973 ) HEI's were a different design than the redesigned 1974's. The 1973 units didn't have the coil under the cap and were only used on certain performance vehicles like the Corvettes. Cadillac still used the point distributor.
    The HEI units from 1974 - 1979 for Cadillac will fit the 425 - 472 - 500.

  6. #5
    YourMainParadox is offline Cadillac Owners Fanatic
    Automobile(s): 1974 Cadillac Hearse 472
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    Re: 73 472 Which HEI units fit? Will a BBC HEI fit?

    ACCEL 59120 has an HEI distributor for the 425-472-500 engines 74-79

  7. #6
    blueboy is offline Cadillac Owners Fanatic
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    Re: 73 472 Which HEI units fit? Will a BBC HEI fit?

    Is there any benefit from upgrading an HEI from a stock 76 CDV?

  8. #7
    greencadillacmatt's Avatar
    greencadillacmatt is offline Cadillac Owners Connoisseur
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    Re: 73 472 Which HEI units fit? Will a BBC HEI fit?

    Quote Originally Posted by blueboy View Post
    Is there any benefit from upgrading an HEI from a stock 76 CDV?
    I do believe that the '76s had an HEI dizzy from the factory. (Somebody please correct me if I'm wrong! )

  9. #8
    cadillac_al is offline Cadillac Owners Connoisseur
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    Re: 73 472 Which HEI units fit? Will a BBC HEI fit?

    Is a new HEI dist more expensive than a Pertronix kit or a Mallory Unilite? On a Chevy the answer is yes. I haven't seen many Caddy HEI's and I assume they aren't cheap. It sounds like a used Cady HEI is the cheapest option.

  10. #9
    deVille33 is offline Cadillac Owners Connoisseur
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    Re: 73 472 Which HEI units fit? Will a BBC HEI fit?

    Upgrading? In what manner? A '76 HEI is the same as '74 - '79. The internals will interchange with any other HEI parts, But the bodies have to be engine specific.

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