Ford Mustang Forum - View Single Post - 96 to 99 engine swap
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post #4 of (permalink) Old 12-06-2005
kscoyote
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Quote:
Originally Posted by gn86
I was planning on sticking with a stock 3.8 from a 99 up mustang. I guess my main questions are. what mods to wiring harness if any. Is the fuel syatem and plumbing the same and motormounts and driveshafts all line up? I am just wanting to replace the motor and ecu but if its not too many other mods i would like to swap to the newer motor.
you shouldn't have to change your ecu, just have it reflashed. everything else is the same.

the fuel system IS different, but not in a way that'll change anything but a CEL, but nothing the computer should recognize with the reflash. The block is unchanged.

The fuel rails etc are different, and if you have all of that stuff from a complete engine, then all you need to do is hook everything up, reflash the ECU and go.

You might pm v6sprout, but I'm pretty sure that's all you've got to do with a complete engine.

Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
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