Since you're having a hard time, I'll see if I can help a little.
There are probably 3 or more options with 3L. The biggest difference between these depends on what heads and LIM you use. You can use the SVT 2.5L "split-port" heads, or the "oval-port" heads that are used on all 3L Duratec vehicles (escape, tauras, etc). The 3L oval port heads will use the additional drainage holes that the 3L block has, but that the 2.5L block does not have. If you use the oval port 3L heads, you can either use the 3L LIM and connected intake parts, or modify the heads to accept the split-port SVT LIM, and use the SVT intake parts. Here are some example setups:
SVT Hybrid - This setup uses a 3L shortblock, 2.5L SVT heads and cams, everything up from there is all the SVT parts (LIM, fuel rail, UIM, etc). Generally, if your heads are in perfect shape you only have to swap those heads onto a 3L shortblock, plug a couple oil lines, and done.
Full 3L #1 - This setup uses a 3L shortblock with the 3L oval port heads , which can be modified to accept the SVT split port LIM, then use your SVT fuel rail, UIM, etc. I beleive this is the setup DemonSVT is using and probably has the fastest N/A contour.
Full 3L #2- This setup uses a 3L shortblock (actually, this is technically a longblock) with the 3L oval port heads, the 3L LIM, fuel rail, and goes right on up with a 3L UIM, TB, etc.
The thing is you can buy a full used low-mileage 3L longblock with heads, LIM, UIM, all of it for less than $1000. You can also buy a brand new 3L shortblock with warranty for just under $600.
I went Hybrid because I thought it would be cheaper, but for me it didn't end up being any cheaper at all because I had to buy SVT heads and cams and the other SVT goodies that I didn't have. All timing parts from your SVT can be used on the 3L, just don' mix and match 3L and 2.5L timing parts becuase they won't work together (different sprocket sizes).
EDIT: Remember, much of what route you take here will probably depend on what parts you can still use from the blown 2.5L engine. If the heads are fine, you can do a hybrid. If they're not, it will probably be more economical to go with a full 3L option. Bottom line is you probably won't know until you tear down that blown motor.
Last edited by rkneeshaw3.0; 10/12/04 04:13 PM.