Running a 99+ 4v in a 97 Cobra - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 10 Old 04-30-2002, 05:18 PM Thread Starter
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Running a 99+ 4v in a 97 Cobra

Anyone done it? What issues did you run into? How much of the wiring harness needed to be pulled out and replaced? What about fuel and spark?
Thanks,
Tom


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Best ET w/this combo: 13.44 @ 105.25 w/ 1.983 60' on street rubber.
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post #2 of 10 Old 04-30-2002, 07:51 PM Thread Starter
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hasn't anyone done this? I hate the idea of putting even a "new" old motor in my cobra. The new ones are dynoing so much better than the 96 - 98's stock.
-Tom


97 cobra, with 2001 4v crate motor - stock from throttle body to cats
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Best ET w/this combo: 13.44 @ 105.25 w/ 1.983 60' on street rubber.
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post #3 of 10 Old 04-30-2002, 08:56 PM
 
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Doing such a swap is really cost prohibitive.

They only make 15 more fwhp. You can pick that up with almost ANY decent bolton.
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post #4 of 10 Old 05-01-2002, 12:46 AM
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Tom, it would probably be cheaper to find a boneyard Navigator 5.4L 32V motor than do the 99 swap into your pig. Thought about it before, even bought a motor, but it turned out to be a major pita.

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post #5 of 10 Old 05-01-2002, 01:07 AM
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why such a PITA to stick the 5.4 in? Oh and does the 5.4 have a forged crank?

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post #6 of 10 Old 05-01-2002, 01:20 AM
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intero, hope you don't mind me adding to the question. I have a block and a 99 intake. Wasn't there a design change in the heads after 99? I am trying to see if I can run spark plug wires instead of the COPs. I figured if I could use 96-98 cam covers on the 99 heads, then my troubles should be fixed there. Then I have to figure out how to run a RETURNABLE fuel system on it. I don't have a computer yet, but I was thinking of using a 98 + tuner. Any ideas as to what I should be doing? What I'm doing wrong? It would be much appreciated.

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post #7 of 10 Old 05-01-2002, 01:23 AM
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Quote:
Originally posted by 2WIZE4GM
why such a PITA to stick the 5.4 in? Oh and does the 5.4 have a forged crank?
There's a guy with a Fox that he stuffed with a 5.4. He can't remove the valve/cam covers with out taking the motor up out of the bay. And yes, the 5.4's have forged cranks.

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post #8 of 10 Old 05-01-2002, 07:04 AM Thread Starter
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i was jus figuring that i'd rather repace my engine with a "newer" engine than a rebuild older one. the newer engines respond better to headers and basic mods as they seem to breath better (more efficiently) out of the box. now i'm thinking that if the block survived, and i can do a rebuild, maybe a stroker will be in order, especially now that there are going to be a few more options out there (ModMax, HP, etc.).
-tom

97 cobra, with 2001 4v crate motor - stock from throttle body to cats
SOLD
Best ET w/this combo: 13.44 @ 105.25 w/ 1.983 60' on street rubber.
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post #9 of 10 Old 05-03-2002, 01:01 AM
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Tom, what does it matter, you will still find a way to make it slow!!!!
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post #10 of 10 Old 05-03-2002, 01:36 AM Thread Starter
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man, that's harsh! hazing a guy who just lost his motor. what next, kicking my cats? wow.

-tom


97 cobra, with 2001 4v crate motor - stock from throttle body to cats
SOLD
Best ET w/this combo: 13.44 @ 105.25 w/ 1.983 60' on street rubber.
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