Is it possible to swap the top end of my 97 4.6 with a 3v top end, headers, intake and camshafts?
what kind of power gain would i see if this is at all possible, i am planning on an evo edge programmer to help adjust the engine

 

Hello & welcome.

Sorry - not happening.

And the 'Edge Evo' is incapable of adjusting yer engine - it only loads canned tuning for yer model year PCM calibration.

 

can you please clarify a little what is not happening?
converting the topend?
Using a Programmer to tune the computer?
or getting an evo edge programmer at all, the website lists it for my engine

ill understand if i cant used the evo programmer to adjust the tuning

 

You would not be able to use the edge evo for that.
It would be a much better idea to go to a 4v setup from a navi. That is actually doable.

 

what year engine of the navigator should i look for will it all just bolt where my stuff was?,

after performing the mod, will i be able to use an evo after getting the computer tuned?

 

Not in it's 'canned' state - you will need to have it converted to a Gryphon so it can accommodate the required custom calibrations.

You will likely need the complete harness, and PCM - this is not a casual project - consider the expense/benefit ratio carefully.

Anything is possible if you throw enough resources into it ( read: $$$)

I advise you to consult with a respected tuner first to see what is suportable.


Here - I'll page the Exalted One - Resident Guru of All Things Engine... ... The ShiskiBrew hisself ...



EDIT - if'n He does not respond in a timely manner, it's likely he's chasing after a sword-swallower again ... y'all may need to PM him, lol...

MGD

 

ok what about the 3 valve conversion or should i just let it be?

the trucks gonna wind up with a k&N, full exhaust, looking at the BBK exhaust headers and the programmer

while im beating around the bush of ignorance, the the rear end limited slip or does it have posi, can i make it posi, i have to replace the seal some how reagardless

 

You can no longer get a Gryphon conversion for a 97-03 Evo - you will have to get a CS or CTS. Also, only PHP does custom tunes for an Edge/Gryphon, if you want to use a local tuner you will need a different device such as a SCT.

 

dang with over 250k miles i guess ill just got with the 3 i want and if i have to swap the engine later i might look more into this

 

All of it's not happening.

 

To add a little more to your question; Have you investigated the piston config in relation to the 3 valve head for clearence and compression ratio?
The piston crowns were changes when the new heads were upgraded to.
You do know the valve control action is quite different and under PCM control that your OEM 97 is not.
You will end up getting into a bundle of problems you did not bargin for by trying to do a redesign with parts and control system.
Ford did not just put parts on a block from one year to the next without a major redesign of the total working system.
For example, from 03 to 04, the PCM and contol system changed from the OBDII to the next generation 'CAN' control as required by federal law.
So not only would you change PCMs but program versions as well plus the wiring.
This becomes a major undertaking only done by a shop that has worked it all out before, assuming it has some kind of benifit for the cost involved.
Good luck.

 

Funniest thing ever! So true!

 

I cant imagine why someone would want to ruin a perfectly good 2v motor like that..

 

swap in a 2v 5.4 and be done with it. I see an impending jbrew slap in ur future

 

look i aint a mechanic, but i am willing to listen and learn