Cadillac STS The newest installation of the performance sedan from Cadillac, having replaced the Seville

engine swap

  #1  
Old 06-03-2010, 11:49 AM
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I have a 99STS with 90,000 miles.Engine blew heads,mech sayed wasnt worth rebuliding.
My question is can i take a engine out of an 2002 sts and put in my car.This engine has less than 35,000 miles.How hard would it be to convert to my 99.
Thanks Tim
 
  #2  
Old 06-03-2010, 06:37 PM
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It's not a straight bolt in, due y2k engine is a re-design or Gen 2 engine. It has different crank sensors which are larger in diameter. (big deal) Along with coil on plug set up. I have heard of being done, but don't know the details. 93-99 long block is pretty much the same. Crossover does change depending on year. Try to find 99 or earlier STS/ETC vin 9 engine and it will be a simpler swap.
 
  #3  
Old 06-04-2010, 09:26 AM
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in the old days before computer integrated systems and emissions, engine or transmission swaps were weekend jobs.

these days, if i wanted a different drive train, i would much rather buy a car that has what i want than spend a year of weekends doing a swap that may or may not work, or worse, be disqualified for Federal emissions. and that is w/o even talking about the cost.


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