Motor change
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Northstar Engines and System Technical Discussion Discussion, Motor change in Cadillac Engine Technical Discussion; I have a 1995 STS and the motor needs replaced. I can get a good deal on a 2001 with ...
  1. #1
    denscor is offline Cadillac Owners Fanatic
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    Motor change

    I have a 1995 STS and the motor needs replaced. I can get a good deal on a 2001 with 47,000 miles on it what needs to be done to change it over?Or would it be easier to look for a 1995 motor?

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  3. #2
    zonie77 is offline Cadillac Owners Connoisseur
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    Re: Motor change

    Not easy to change. A lot of changes done to the sensors (physical size and location) which makes it difficult but not impossible. There was a thread about a month ago. You may be able to find it. The 95 is much easier to install.

  4. #3
    denscor is offline Cadillac Owners Fanatic
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    Re: Motor change

    Quote Originally Posted by zonie77
    Not easy to change. A lot of changes done to the sensors (physical size and location) which makes it difficult but not impossible. There was a thread about a month ago. You may be able to find it. The 95 is much easier to install.

    Help I can not find the thread!! Now I bought a 1997 instead would it be easier?

  5. #4
    cart69's Avatar
    cart69 is offline Cadillac Owners Fanatic
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    Re: Motor change

    what ya doin with the old motor??? whats wrong with it?

  6. #5
    denscor is offline Cadillac Owners Fanatic
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    Re: Motor change

    It has a blown head gasket and 166000 miles so I'm thinking why fix it with that many miles! Do not know what to do with it yet!

  7. #6
    cart69's Avatar
    cart69 is offline Cadillac Owners Fanatic
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    Re: Motor change

    depending on what you decide to do with the old one i may be interested in it. but depending on price since i would have to drive to virginia to get it from illinois!!! unless you know of a cheap shipper? let me know

  8. #7
    Tomaapilot is offline Cadillac Owners Member
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    Question Re: Motor change

    I've got the same situation and the same question. My '95 Eldorado ETC has a blown head gasket and lots of miles. I can get a low miles 99 at a fair price, but the local junk yard said it would NOT work. I thought that was incorrect, so aside from sensors, is there anything that would preclude a swap? How big a deal are the sensors. Seems that if you use the sensors off of the old motor it should work...if they will physically fit.
    Any guesses?

    Thanks,
    Tom

  9. #8
    denscor is offline Cadillac Owners Fanatic
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    Re: Motor change

    I guessing the intake needs changed, Thottle body, you might not use all the sensor holes so plug them, the sensor holes are different ? Someone know anything different?

  10. #9
    Tommy Deville's Avatar
    Tommy Deville is offline Cadillac Owners Enthusiast
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    Re: Motor change

    lots of diffrent wireing harness issues to deal with

  11. #10
    denscor is offline Cadillac Owners Fanatic
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    Re: Motor change

    so sell old motor and get a 1995 or older one!

  12. #11
    zonie77 is offline Cadillac Owners Connoisseur
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    Re: Motor change

    The original threads of using a 2000 mtr in a 95 (approximately) car was over a year old or so. Then it popped up a few months ago, as some threads often do. The old sensors are different sizes. They can be modified to fit. The key...like all mods...is your skill. I didn't see it in my favorites...darn.

  13. #12
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    Re: Motor change

    Quote Originally Posted by denscor
    I have a 1995 STS and the motor needs replaced. I can get a good deal on a 2001 with 47,000 miles on it what needs to be done to change it over?Or would it be easier to look for a 1995 motor?

    the 2000 up engines will not work in 99 back cars without major work . the engine may physicaly fit but all controls are different for example the 2000 up uses coil on plug system. the 97 engine should fit with the use of the 95 sensors. I know that the 93 and 94 engines have some physical differences from the 95 thru 99 engines and the 95 was a bit different from the 96 thru 99 engines but I think the main difference in internal parts. unless someone on the forum can tell you for sure, go to a dealer or a good on line source. and see if they list the replacement engine as fitting 95 thru 99.

  14. #13
    Zorb750 is offline Cadillac Owners Connoisseur
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    Re: Motor change

    They do. GM's part number for the complete engine is the same from 1995-1999.

    12567313 L37 VIN 9
    12567314 LD8 VIN Y

  15. #14
    cart69's Avatar
    cart69 is offline Cadillac Owners Fanatic
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    Re: Motor change

    denscor i thought you got a 97 motor? quite bidding up the one on ebay i am bidding on!!!! i am cartz96sts LOL too funny!!!

  16. #15
    denscor is offline Cadillac Owners Fanatic
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    Re: Motor change

    Sorry LOL Sold the 2001 motor! Need one LOL !!!

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