I am wanting to replace the engine in my car due to high mileage and usage of oil, which seems to be common on the 4.6 SOHC, back since it's inception in 91. When these engine seem to hit around 80-90k miles, they use some oil. I have since replaced valve seals a while back, and helped it for a while, but now I am passing oil thru the rings, and it is affecting performance. I'd overhaul the engine, but I'd much rather just update it with a newer engine, 99 or newer with the PI heads. My first question is, are the engines out of Crown Vics, Grand Marquis, and Towncar, as well as F & E Series, the same block and heads out of a Mustang, or are they differnent and how? Second question is, I am looking to see if anyone is selling or knows anyone selling this engine in question, so I may be able to purchase?
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