78 deville engine in 68 deville
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RWD 19xx-1984 DeVille and Fleetwood,
1985-1996 Fleetwood and Brougham Forum Discussion, 78 deville engine in 68 deville in Past Cadillac Vehicle Discussion; I found a running driving 78 deville can I put the engine in my 68...
  1. #1
    Junior solis is offline Cadillac Owners Member
    Automobile(s): 64&68 deville
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    78 deville engine in 68 deville

    I found a running driving 78 deville can I put the engine in my 68

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  3. #2
    deVille33 is offline Cadillac Owners Connoisseur
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    Re: 78 deville engine in 68 deville

    I don't see why not. The two engines are configuered about the same. The topic has never come up on the forum, because most enthusiasts would perfer the bigger engine in the larger bodied car. If you plan on doing this, ( you don't say how many miles on the 425 ) I would suggest checking your bearing clearances and replacing the timing gear set. You may also concider changing out the power steering pump, as the 472 pump has a double pulley.

  4. #3
    77CDV's Avatar
    77CDV is offline Cadillac Owners Master
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    Re: 78 deville engine in 68 deville

    What happend to the 500?

  5. #4
    Junior solis is offline Cadillac Owners Member
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    Re: 78 deville engine in 68 deville

    The 500 sold

  6. #5
    lacville78 is offline Cadillac Owners Fanatic
    Automobile(s): 77 Cadillac CDV
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    Re: 78 deville engine in 68 deville

    If your gonna use the 425 it should be pretty much a bolt in.
    Also you could hit up the classified section to sell some of the parts off the old 78 it should help finance the swap
    I have a 78 and am in need of parts and i hate to hear when they hit the crusher with good parts.

    When you pull the 425 consider putting an RV cam in it, that and good exhaust would wake it up

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