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Thread: Gas Engine Tune Up Specs

  1. #16
    Join Date
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    Vernon, CT
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    Re: Gas Engine Tune Up Specs

    Any chance of getting specs for a 79 deville?


    thanks


  2. #17
    davesdeville's Avatar
    davesdeville is offline Banned
    Automobile(s): 1995 ETC, 75 Deville, Cad500 powered 73 Apollo, 94 Mark VIII
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    Re: Gas Engine Tune Up Specs

    79 specs should be the same as 78 as far as I know.

  3. #18
    The Ape Man's Avatar
    The Ape Man is offline Cadillac Owners Connoisseur
    Automobile(s): '80 Fleetwood Coupe, 1994 and 1995 Mercedes 140 Coupe
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    Re: Gas Engine Tune Up Specs

    According to Chilton 1984 Parts and Labor Guide:

    '79 425 W carb = 23 btdc checked at 1400 RPM. (not the same as 1978)
    Fuel injected = 18 btdc which IS the same as 1978.

    Some of these books AND the specs posted here are incorrect. They show figures of how many degrees before top dead center the intake valve opens on engines of different years. When you look up the internal engine items such as camshafts, timing gears, etc. they are all the same exact part numbers. Something is wrong.

  4. #19
    davesdeville's Avatar
    davesdeville is offline Banned
    Automobile(s): 1995 ETC, 75 Deville, Cad500 powered 73 Apollo, 94 Mark VIII
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    Re: Gas Engine Tune Up Specs

    I said what I said because there were no physical changes between 78 and 79 engines. Who has got a factory service manual, anyone?

  5. #20
    deville_in's Avatar
    deville_in is offline Cadillac Owners Member
    Automobile(s): 1970 Coup Deville Convertible
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    Apr 2005
    Location
    North Carolina based Buffalonian (NY)
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    Re: Gas Engine Tune Up Specs

    Since there is some interest and knowledge regarding "Old School" Caddy's - Can anyone direct me to any info on buying the right radial tires for a 1970 Coup Deville Convertible.

    the ones one Bebe are (I think) the wrong size - my speedo is off by about 8 miles an hour and the exhaust (on a rare occasion) bottoms out.

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