351w EFI install

[lonesouth]

here is an explanation on the Grey vs Black TFI modules.

http://www.myo-p.com/Ford-EEC/EEC Help files/Files/TFI_grey_or_black.html

my reading suggests the black TFI is correct for the p3m ecm.

 

[lonesouth]

not sure if this will be helpful to me or not, since mine is a 93 t-bird harness and not a mustang

http://sth2.com/mustang/Mustang-EFI-harness.pdf

 

[lonesouth]

link to a backup from fordfuelinjection

http://oldfuelinjection.packrad.net/

 

[EFI Guy]

The P3M does have some tuning support via Tweecer. I can't say how good it is, and I'm sort of anti-Tweecer anyway. You can probably run it just fine without any tuning if your MAF and injectors are from the t-bird also.

What I don't know is if the P3M is 100% load based spark like the 94-95 Mustangs are. I suspect it is since the hardware is so similar. Load will be calculated incorrectly on a 351 without a tune, but I don't know how bad the effects would be. It will probably run just fine, but I'd keep your ears open for any signs of pinging. This would apply to your Mustang PCM as well.

The 94-95 Mustang PCMs are VERY well supported across multiple tuning platforms and are one of my favorites to work with. They also support dual speed fan control if that is something you'd like to use.

 

[lonesouth]

awesome! I've googled for a while and have not been able to find the pinout for the P3M.

Also, for those not aware and reading this for the first time, the t-bird and 94/95 mustangs did not use a BP sensor, so don't go looking for it.

 

[KyleQ]

I get a bit of pinging on my setup under load in tall gears - I back off timing and it didn't seem to help either.

 

[Timmy390]

awesome! I've googled for a while and have not been able to find the pinout for the P3M.

Also, for those not aware and reading this for the first time, the t-bird and 94/95 mustangs did not use a BP sensor, so don't go looking for it.

Sometimes it's all about what you put in the search bar.
"thunderbird P3M pinout" resulted in this....

http://forums.tccoa.com/showthread.php?t=70457

Appears to be just what you're looking for.

Tim

 

[lonesouth]

thanks, my googlefu is weak of late.

 

[Bluebolt]

Lonesouth, what year are your heads? Watch out for the front water port leaking issue if you have 1976 and earlier heads.

 

[lonesouth]

not sure on the year. I got the engine reman and I belive it was an 86 block

 

[lonesouth]

new question, since my dizzy is broken, what vehicle should i go to for a replacement? 351w remote mount black TFI with a cast gear.

 

[lonesouth]

92 bronco should do it

cardone 84-2891 with cap and rotor for $69 to my door from rock auto

 

[lonesouth]

so when ford made the switch to EFI, they made the shaft on the dizzy 1/2" longer. Not really sure why, but they did. The fix is to hack off a 1/2" of the new dizzy shaft. But then the cardone unit I got was swaged the whole way through, only the lower portion. So the oil pump drive shaft would bottom out inside the dizzy. I had to dremel out the dizzy shaft to get it to seat.

Question: The 92 bronco would have had a cast gear, right?


I have finally gotten around to working on this. I've got the lower intake in, harnesses in, upper intake mocked up. I went ahead and tested wired up the harness power and ground, and connected the hot in start/run wire to the green/red stripe under the hood. Turning the key to run, the fuel pump cycles for two seconds, and another relay turns on. The CEL stays lit till I turn the key off, when I also hear the other relay click off.

I'm also figuring on running the return into the vent barb on my gas tank. Is there likely to be any problem running a ventless fuel system for a day? I was able to remove the vent and open up the end where it is pinched off.

 

[lonesouth]

Progress

 

[dclack]

Yes, a 92 351w Bronco would have a cast gear but still check to make sure. You should see a cast surface on the collar as opposed to a smooth machined surface.

What valve covers are you using with that intake? The short covers that I had wouldn't work because there's no hole for the PCV since the 302 has it in the lower intake.

 

[lonesouth]

I think they are mustang. The oil fill spout has a 5/8" barb, that I have adapted down to 3/8" for the pcv. There is a hole in the drivers side for the vent that connects to the intake, but there is not room to run a valve there, just an elbow. At this time, there will not be a pcv valve in my pcv system.

 

[riggermortis]

I just joined this forum today because I too am in the middle of doing a 1996 351 gt40 EFI swap in my 73. Gt40 heads from a '96 explorer, marine cast iron lower, explorer upper, comp 35-349-8 cam, and I am going to run it with a A9P mustang ecm.

 

[lonesouth]

Got the fuel tank installed, t-stat & housing installed, coolant hoses hooked up, temp sender installed, booster port capped, vac lines identified. Pulled codes, ign on engine off, only got EGR codes. I'm hoping to get the vac lines hooked up tomorrow, oil changed, and attempt to start tomorrow.

 

[lonesouth]

vac lines got run, upper intake installed, battled the distributor/firing order/timing for a few hours. I would get an occasional one cylinder hit, and then nothing. Picked up a fuel pressure gauge at lunch. I suspect my regulator is bad and is allowing the pressure to fall off too quickly.

 

[Timmy390]

You're beating me at every turn.....LOL....good job.

I got my hard lines ran over the weekend. I have everything to make the soft lines just need to get on it. Then exhaust them fire it up....I hope....

Tim