I would go with the 5.4. You said it comes with the wiring harness and all the coils on the plugs right? Then you would just need to get a pcm, the flywheel, and get the exhaust altered to fit. The motor mounts are the same. You do not need to change them. Just use your mounts. I have done these swaps on friends trucks and my own. Except on mine I swaped in the complete drivetrain out of a Lightning. The 5.4 does not compare to the 4.6 as far as power goes, and I am not comparing with the Lightning engine. I work for Ford and I drive these trucks every day. I know what the difference is in the two. The 5.4 has alot more torque. Belive me you can feel a big difference in the two. As far as the pcm goes, they're only a couple hundred bucks from the dealer, and you could just give them your old one as a core. That's my 2 cents.

 

Ok, so I ordered the 5.4 from Kar Kraft. I can get the flywheel locally. Is there anywhere on-line to get the PCM?

I should have the motor by next Friday. Will begin pulling the 4.6 out this weekend. What's involved in changing the PCM. Any info. on that would be helpful.

Thanks,
Steve

 

Steve,

Try Mike Troyer for the PCM. As far as removing it; Look behind the battery on the firewall. There is a gray 102 pin connector held on with a 10 mm nut. Loosen nut and remove the connector. Then go inside the cab and remove the passenger side kick panel and look up under the dash. There is a black clip holding the PCM im place. Remove the clip and pull towards the rear and down on the PMC to remove it.

JMC

 

Thanks JMC! I just FedExed the check for the motor!!! Also sent an e-mail to Mike Troyer to see about the PCM. Will let you know next week what the motor looks like and keep you posted as to the progress.



Again, thanks to JMC and svt_sc_f150 for all your assistance. Please stay tuned as I may have more questions as I get this project rolling.

Steve

 

I read that you had already purchased an engine, but I'm going to run this by everyone. When the time comes for my 5.4 to go I was thinking about droping a 32v intech out of one of the navs. then maybe a procharger, KB. or posibly a turbo kit. I just want to do something fun with it instead of just trading it back in.

once its paid for and out of warranty the skies the limit.

 

There is no need to remove the kick panel. You will have to get the PATS module reprogrammed when you install the new PCM.

 

I hate jumping in here at the last min but if you change the computer to one that is compatible with the coil on plugs, then you are going to run into a lot more problems then you think. There are several other things that are different on the 99 and later vehicles as apposed to the early 97-98. The entire speedometer cluster will have to be changed for one. Also, the early f-150's did not have a PATS system so there is no way to get a reading to the computer, no reading, no start.
You are probably better off getting a computer from a 98 that had the 5.4 and changing to plug wires and coil packs using your existing wiring harness. You will probably still need a Superchip to adjust for the PI heads but everything else should work fine.
Either way, good luck and keep us informed...

 

All 5.4 engines have COP ignitions. The PCM from a 99 can be found without PATS and it is calibrated for the PI heads.

JMC

 

WLF, Thanks for the updated info. I will look into a used PCM from a 98 with the 5.4. Will then go to Troyer for the cuip. I will let you know how it goes.

Thanks,
Steve

 

I think I already mentioned that he would have to stick with a '97 or '98 pcm with 5.4. And once the pcm is installed, you will have to have your keys programmed into the pcm, I said pats module in my earlier post. What I meant was the pats keys would need to be reprogrammed. Sorry for any confusion.

 

Neal's 99 5.4 has the Pi heads and no PATS system. So if you get the PCM from a 99 you can get the enhanced programming for the PI heads and not need to do anything about the keys.

JMC

 

HI!... I have the PATS system on my truck but just for the keys. I don't have the key fobs.

 

OOPS,

My bad, Thought you didn't have the PATS.

JMC

 

JMC,
He needs to stick with the '97 or '98 pcm. Otherwise he will have to change all the wiring harnesses, the instrument cluster, all the modules, etc. etc.

 

svt,
So its back to the 2 first choices; a 98 5.4 PCM or convert the COP to coil pack ignition. Which would you do?

JMC