1987 Deville 4.1 to 4.9 Conversion - Page 3

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HT4100 4.1, 4.5, 4.9 Discussion, 1987 Deville 4.1 to 4.9 Conversion in Cadillac Engine Discussion; hi I hope someone can answer some the questions I have. I have a 88 Fleetwood fwd, a few years ...
  1. #31
    cady lover is offline Cadillac Owners Member
    Automobile(s): 88 fleetwood fwd, 98 concours
    Join Date
    Nov 2011

    Re: 1987 Deville 4.1 to 4.9 Conversion

    hi I hope someone can answer some the questions I have. I have a 88 Fleetwood fwd, a few years ago I put on a 4.9 in it. the smog pump is on the engine because I thought I need it. can you anyone please tell me what do I do with all the parts that connect to the smog pump if I remove the pump. the cables, the hoses.

  2. #32
    dennis93coupe's Avatar
    dennis93coupe is offline Cadillac Owners Connoisseur
    Automobile(s): 1993 Coupe Deville, 2009 XLR-V 1 of 6 Crystal Red
    Join Date
    Feb 2010
    Orange County, CA

    Re: 1987 Deville 4.1 to 4.9 Conversion

    What cables are you asking about?

  3. #33
    drewsdeville is offline Cadillac Owners Master
    Automobile(s): 2011 Crown Vic LX, 2009 Chevy Malibu 2LT
    Join Date
    Oct 2004
    Oak Creek, WI

    Re: 1987 Deville 4.1 to 4.9 Conversion

    Remove the hoses from the cat, manifold, and air duct and cap the holes. Remove the diverter valve. Remove the pump and install the substitute brace (from a 4.9) that bolts from the AC compressor to the bracket behind the timing cover. Install 4.9 length belt.

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