Gas Engine Tune Up Specs
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500, 472, 425, 368 Discussion, Gas Engine Tune Up Specs in Cadillac Engine Technical Discussion; ...
  1. #1
    Dead Sled's Avatar
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    Gas Engine Tune Up Specs

    Year
    1967
    Engine No. Cyl. Disp. CI (L)
    8-429 (7.0)
    Fuel Delivery
    4V Carb.
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    44 0.035
    Distributor Point Dwell (Deg.), Point Gap (in.)
    30° 0.016"
    Ignition Timing Deg. BTDC (Auto. Trans)
    5B
    Intake Valve Opens BTDC
    39°
    Fuel Pump Pressure
    5.75 PSI
    Idle Speed (Auto Trans)
    500 RPM
    __________

    Year
    1968-1969
    Engine No. Cyl. Disp. CI (L)
    8-472 (7.7)
    Fuel Delivery
    4V Carb.
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    44N 0.035
    Distributor Point Dwell (Deg.), Point Gap (in.)
    30° 0.016"
    Ignition Timing Deg. BTDC (Auto. Trans)
    5B
    Intake Valve Opens BTDC
    18°
    Fuel Pump Pressure
    5.75 PSI
    Idle Speed (Auto Trans)
    550 RPM

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  3. #2
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    Thread Starter
    Year
    1970-1971
    Engine No. Cyl. Disp. CI (L)
    8-472 (7.7)
    Fuel Delivery
    4V Carb.
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    R46N 0.035
    Distributor Point Dwell (Deg.), Point Gap (in.)
    30° 0.016"
    Ignition Timing Deg. BTDC (Auto. Trans)
    8B
    Intake Valve Opens BTDC
    18°
    Fuel Pump Pressure
    6 PSI
    Idle Speed (Auto Trans)
    600 RPM

    __________


    Year
    1970-1971
    Engine No. Cyl. Disp. CI (L)
    8-500 (8.2)
    Fuel Delivery
    4V Carb.
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    R46N 0.035
    Distributor Point Dwell (Deg.), Point Gap (in.)
    30° 0.016"
    Ignition Timing Deg. BTDC (Auto. Trans)
    7.5B
    Intake Valve Opens BTDC
    18°
    Fuel Pump Pressure
    6 PSI
    Idle Speed (Auto Trans)
    600 RPM

  4. #3
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    Thread Starter
    Year
    1972-1973
    Engine No. Cyl. Disp. CI (L)
    8-472 (7.7)
    Fuel Delivery
    4V Carb.
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    R46N 0.035
    Distributor Point Dwell (Deg.), Point Gap (in.)
    30° 0.016"
    Ignition Timing Deg. BTDC (Auto. Trans)
    8B
    Intake Valve Opens BTDC
    34°
    Fuel Pump Pressure
    5.25-6.25 PSI
    Idle Speed (Auto Trans)
    600/400 RPM

    __________


    Year
    1972-1973
    Engine No. Cyl. Disp. CI (L)
    8-500 (8.2)
    Fuel Delivery
    4V Carb.
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    R46N 0.035
    Distributor Point Dwell (Deg.), Point Gap (in.)
    30° 0.016"
    Ignition Timing Deg. BTDC (Auto. Trans)
    8B
    Intake Valve Opens BTDC
    34°
    Fuel Pump Pressure
    5.25-6.5 PSI
    Idle Speed (Auto Trans)
    600/400 RPM

  5. #4
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    Thread Starter
    Year
    1974
    Engine No. Cyl. Disp. CI (L)
    8-472 (7.7)
    Fuel Delivery
    4V Carb.
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    R45NS 0.035
    Distributor Point Dwell (Deg.), Point Gap (in.)
    30° 0.016"
    Ignition Timing Deg. BTDC (Auto. Trans)
    10B
    Intake Valve Opens BTDC
    21°
    Fuel Pump Pressure
    5.25-6.25 PSI
    Idle Speed (Auto Trans)
    600/400 RPM

    __________


    Year
    1974
    Engine No. Cyl. Disp. CI (L)
    8-500 (8.2)
    Fuel Delivery
    4V Carb.
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    R45NS 0.035
    Distributor Point Dwell (Deg.), Point Gap (in.)
    30° 0.016"
    Ignition Timing Deg. BTDC (Auto. Trans)
    10B
    Intake Valve Opens BTDC
    21°
    Fuel Pump Pressure
    5.25-6.5 PSI
    Idle Speed (Auto Trans)
    600/400 RPM

    __________

    Year
    1974
    Engine No. Cyl. Disp. CI (L)
    8-500 (8.2)
    Fuel Delivery
    4V Carb.
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    R45NS 0.060
    Distributor Point Dwell (Deg.), Point Gap (in.)
    Electronic (HEI)
    Ignition Timing Deg. BTDC (Auto. Trans)
    10B
    Intake Valve Opens BTDC
    21°
    Fuel Pump Pressure
    5.25-6.5 PSI
    Idle Speed (Auto Trans)
    600/400 RPM

  6. #5
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    Thread Starter
    Year
    1975
    Engine No. Cyl. Disp. CI (L)
    8-500 (8.2)
    Fuel Delivery
    4V Carb.
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    R45NSX 0.060
    Distributor Point Dwell (Deg.), Point Gap (in.)
    Electronic (HEI)
    Ignition Timing Deg. BTDC (Auto. Trans)
    6B
    Intake Valve Opens BTDC
    21°
    Fuel Pump Pressure
    5.25-6.5 PSI
    Idle Speed (Auto Trans)
    600/400 RPM

    __________

    Year
    1975
    Engine No. Cyl. Disp. CI (L)
    8-500 (8.2)
    Fuel Delivery
    EFI
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    R45NSX 0.060
    Distributor Point Dwell (Deg.), Point Gap (in.)
    Electronic (HEI)
    Ignition Timing Deg. BTDC (Auto. Trans)
    12B
    Intake Valve Opens BTDC
    21°
    Fuel Pump Pressure
    39 PSI MIN.
    Idle Speed (Auto Trans)
    600 RPM

  7. #6
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    Thread Starter
    Year
    1976
    Engine No. Cyl. Disp. CI (L)
    8-350 (5.7)
    Fuel Delivery
    4V Carb.
    Engine Manufacturer
    Oldsmobile
    Spark Plugs - Origional Type, Gap (in.)
    R46SX 0.080
    Distributor Point Dwell (Deg.), Point Gap (in.)
    Electronic (HEI)
    Ignition Timing Deg. BTDC (Auto. Trans)
    10B (6B)
    Intake Valve Opens BTDC
    22°
    Fuel Pump Pressure
    5.25-6.5 PSI
    Idle Speed (Auto Trans)
    600 RPM

    __________

    Year
    1976
    Engine No. Cyl. Disp. CI (L)
    8-500 (8.2)
    Fuel Delivery
    4V Carb.
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    R45NSX 0.060
    Distributor Point Dwell (Deg.), Point Gap (in.)
    Electronic (HEI)
    Ignition Timing Deg. BTDC (Auto. Trans)
    6B
    Intake Valve Opens BTDC
    21°
    Fuel Pump Pressure
    5.25-6.5 PSI
    Idle Speed (Auto Trans)
    600 RPM

    __________

    Year
    1976
    Engine No. Cyl. Disp. CI (L)
    8-500 (8.2)
    Fuel Delivery
    EFI
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    R45NSX 0.060
    Distributor Point Dwell (Deg.), Point Gap (in.)
    Electronic (HEI)
    Ignition Timing Deg. BTDC (Auto. Trans)
    12B
    Intake Valve Opens BTDC
    21°
    Fuel Pump Pressure
    39 PSI MIN.
    Idle Speed (Auto Trans)
    600 RPM

  8. #7
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    Thread Starter
    Year
    1977
    Engine No. Cyl. Disp. CI (L)
    8-350 (5.7)
    Fuel Delivery
    4V Carb.
    Engine Manufacturer
    Oldsmobile
    Spark Plugs - Origional Type, Gap (in.)
    R47SX 0.060
    Distributor Point Dwell (Deg.), Point Gap (in.)
    Electronic (HEI)
    Ignition Timing Deg. BTDC (Auto. Trans)
    10B (6B)
    Intake Valve Opens BTDC
    22°
    Fuel Pump Pressure
    5.25-6.5 PSI
    Idle Speed (Auto Trans)
    650 RPM

    __________

    Year
    1977
    Engine No. Cyl. Disp. CI (L)
    8-425 (7.0)
    Fuel Delivery
    4V Carb.
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    R45NSX 0.060
    Distributor Point Dwell (Deg.), Point Gap (in.)
    Electronic (HEI)
    Ignition Timing Deg. BTDC (Auto. Trans)
    10B @ 1400 RPM
    Intake Valve Opens BTDC
    21°
    Fuel Pump Pressure
    5.25-6.5 PSI
    Idle Speed (Auto Trans)
    675 RPM

    __________

    Year
    1977
    Engine No. Cyl. Disp. CI (L)
    8-425 (7.0)
    Fuel Delivery
    EFI
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    R45NSX 0.060
    Distributor Point Dwell (Deg.), Point Gap (in.)
    Electronic (HEI)
    Ignition Timing Deg. BTDC (Auto. Trans)
    18 @ 1400 RPM
    Intake Valve Opens BTDC
    21°
    Fuel Pump Pressure
    39 PSI MIN.
    Idle Speed (Auto Trans)
    675 RPM

  9. #8
    Dead Sled's Avatar
    Dead Sled is offline Cadillac Owners Connoisseur
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    Thread Starter
    Year
    1978
    Engine No. Cyl. Disp. CI (L)
    8-350 (5.7)
    Fuel Delivery
    EFI
    Engine Manufacturer
    Oldsmobile
    Spark Plugs - Origional Type, Gap (in.)
    R47SX 0.060
    Distributor Point Dwell (Deg.), Point Gap (in.)
    Electronic (HEI)
    Ignition Timing Deg. BTDC (Auto. Trans)
    10B (8B)
    Intake Valve Opens BTDC
    22°
    Fuel Pump Pressure
    5.25-6.5 PSI
    Idle Speed (Auto Trans)
    650 RPM

    __________

    Year
    1978
    Engine No. Cyl. Disp. CI (L)
    8-425 (7.0)
    Fuel Delivery
    4V Carb.
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    R45NSX 0.060
    Distributor Point Dwell (Deg.), Point Gap (in.)
    Electronic (HEI)
    Ignition Timing Deg. BTDC (Auto. Trans)
    18B @ 1400 RPM
    Intake Valve Opens BTDC
    21°
    Fuel Pump Pressure
    5.25-6.5 PSI
    Idle Speed (Auto Trans)
    650 RPM

    __________

    Year
    1978
    Engine No. Cyl. Disp. CI (L)
    8-425 (7.0)
    Fuel Delivery
    EFI
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    R45NSX 0.060
    Distributor Point Dwell (Deg.), Point Gap (in.)
    Electronic (HEI)
    Ignition Timing Deg. BTDC (Auto. Trans)
    18 @ 1400 RPM
    Intake Valve Opens BTDC
    21°
    Fuel Pump Pressure
    39 PSI MIN.
    Idle Speed (Auto Trans)
    675 RPM

  10. #9
    lux hauler is offline Cadillac Owners Connoisseur
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    Dead Sled,
    Lots of info there. Thanks for posting it.

  11. #10
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    Thread Starter
    Year
    1980
    Engine No. Cyl. Disp. CI (L)
    6-252 (4.1)
    Fuel Delivery
    4V Carb.
    Engine Manufacturer
    Buick
    Spark Plugs - Origional Type, Gap (in.)
    R45TSX 0.060
    Distributor Point Dwell (Deg.), Point Gap (in.)
    Electronic (HEI)
    Ignition Timing Deg. BTDC (Auto. Trans)
    15B
    Intake Valve Opens BTDC
    16°
    Fuel Pump Pressure
    4.25-5.5 PSI
    Idle Speed (Auto Trans)
    550 RPM

    __________

    Year
    1980
    Engine No. Cyl. Disp. CI (L)
    8-368 (6.0)
    Fuel Delivery
    4V Carb.
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    R45NSX 0.060
    Distributor Point Dwell (Deg.), Point Gap (in.)
    Electronic (HEI)
    Ignition Timing Deg. BTDC (Auto. Trans)
    18B
    Intake Valve Opens BTDC
    11°
    Fuel Pump Pressure
    5.5-6.5 PSI
    Idle Speed (Auto Trans)
    575 RPM

    __________

    Year
    1980
    Engine No. Cyl. Disp. CI (L)
    8-368 (6.0)
    Fuel Delivery
    DFI
    Engine Manufacturer
    Cadillac
    Spark Plugs - Origional Type, Gap (in.)
    R45NSX 0.060
    Distributor Point Dwell (Deg.), Point Gap (in.)
    Electronic (HEI)
    Ignition Timing Deg. BTDC (Auto. Trans)
    10B
    Intake Valve Opens BTDC
    11°
    Fuel Pump Pressure
    12-14 PSI
    Idle Speed (Auto Trans)
    575 RPM

  12. #11
    Dead Sled's Avatar
    Dead Sled is offline Cadillac Owners Connoisseur
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    some where I have the 80-present specs I'll keep looking

  13. #12
    stupeds is offline Cadillac Owners Member
    Automobile(s): '74 Sedan Deville
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    Re: Gas Engine Tune Up Specs

    shouldnt the sparkplug gap on the 74 500 and 472 be .060 with the hei dist?

  14. #13
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    Re: Gas Engine Tune Up Specs

    Quote Originally Posted by stupeds
    shouldnt the sparkplug gap on the 74 500 and 472 be .060 with the hei dist?
    if it has HEI yes if not those specs above are for piont type

  15. #14
    stupeds is offline Cadillac Owners Member
    Automobile(s): '74 Sedan Deville
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    Re: Gas Engine Tune Up Specs

    Quote Originally Posted by Dead Sled
    if it has HEI yes if not those specs above are for piont type
    yeah thats what im trying to say. the 4th post and the 3 engine described is a 74 500 with hei, but you have the gap at .035 when it should be .060 just wanted to give you the heads up so people done set the gap wrong.

  16. #15
    Dead Sled's Avatar
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    Re: Gas Engine Tune Up Specs

    Quote Originally Posted by stupeds
    yeah thats what im trying to say. the 4th post and the 3 engine described is a 74 500 with hei, but you have the gap at .035 when it should be .060 just wanted to give you the heads up so people done set the gap wrong.

    ahh fixed it

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