My GPW had a wonderful habit of stalling at the worse possible time. Like hill climbs for example. It also liked to keep my friends busy with the tow strap when it wasn't cooperating. After a stress-filled pull up Winch Hill #1, I finally decided that enough was enough and my carburetor had to go.

http://img413.imageshack.us/img413/6161/p6290134dn1.jpg

As I got across Comittee Crossing, the carb acted up again, and the Fawker missed and popped all the way back down to Cisco. I was not pleased to say the least.

First I got it off the trailer, and the thing was running like utter dog shit. I built a pretty torquey motor so this was a little weird for me. Suffice it to say I was pretty excited I was going to dump a whole assload more money in my money pit Flatty.

I went on Craigslist and found a complete 5.0L computer (A9L), wiring harness and upper and lower intake and MAF for $250. It was kind of far away, but my dad was headed up that way anyway so I had him pick it all up.

Other Ford gurus will know that a 351 and 302 take different lower intake manifolds, so the lower was of no real use to me. Since I work in a cubicle, I have the luxury of cruising the PBB and Craigslist all day when it's slow around here. I found a 351W truck lower and TFI distributor for $75. I had the guy meet me and now I was up more parts.

So I got to tearing it down, and it hadn't really been cleaned since I built the thing a few years back:

http://img402.imageshack.us/img402/430/p7190160lq8.jpg


Cleaned and painted 1992 351W truck lower installed:

http://img384.imageshack.us/img384/6422/p7190161ke7.jpg

http://img185.imageshack.us/img185/1038/p7190162nn5.jpg


The next order of business was cleaning up the wiring. Mine came out of a 1991 Mustang GT, so I had to clean out the fog light harness from the engine harness along with the airbag accelerometers. I used these links to do all the wiring, and since there are a metric shitton of threads on how to wire one of these, I won't go into it.

http://www.fordfuelinjection.com/?p=6
http://www.therangerstation.com/tech_library/EFI_Wiring.htm
http://home.san.rr.com/slick/SEFI.htm
http://classicbroncos.com/forums/showthread.php?t=122987
http://77cj.littlekeylime.com/5_0l_wiring.html

I definitely did not have to buy a new harness. My GPW had electrical problems in November, so I had already rewired it to someday possibly accept fuel injection. With all the relay-based electrical functions in my Flatty all it took was identifying the wires and hooking them to their proper sources above.

The first step was figuring out where to mount the damned computer. It's tight in this thing as many of you can imagine. I finally settled on building an enclosure under the glove box that would be tough. So I bent up some 14 gauge Al diamond plate into a box and then had my neighbor TIG weld the corners shut. It turned out pretty well I think.

http://img258.imageshack.us/img258/5789/p7210173pj0.jpg

http://img258.imageshack.us/img258/2029/p7210177ef5.jpg

I chose to eliminate the Air Management System, EGR valve, Canister Purge, and one other one I can't think of right now using 75 ohm resistors. Well actually RadioShack didn't have 75 Ohm resistors, so I called Engineer Matt and asked him how to get by. I used a 100, 1000, and 475 Ohm (IIRC) to make ~ 75 ohms. You don't have to add resistors in their place, but if you're like me and don't want the check engine light on for stuff that isn't wrong you should do this. It cost me $5 to eliminate all the functions with the exception of the EGR position sensor. I bought that part from BCBroncos for $20.

http://img201.imageshack.us/img201/5874/p7210170yy9.jpg

My wiring mess:

http://img384.imageshack.us/img384/9857/p7210179sr4.jpg

My next stop was the fuel pump. I researched the hell out of this and determined that the best pump was in fact the E2000 ('88 F-250 external). I weighed my options on placement. I figured since my backseat was now home to a 30 gallon fuel cell, I should just man up and keep the pump in the tub so it's not subjected to heat. I decided it would be a nice thing to have under the passenger's seat, so that's where I put it.

http://img169.imageshack.us/img169/8670/p7210166pp7.jpg

http://img201.imageshack.us/img201/9251/p7210167bw9.jpg

I plumbed my return hose through the tank sender and ran the lines. I decided to let the ECU control the fuel pump, although I'm told you don't have to. That means there would be a total of 7 wires to hook to the body rather than the standard 5 wires. I figured that would be worth it so my computer wouldn't act up. I did not use a roll over switch like other have, so my fuel pump monitor wire was wired straight to the relay output for the fuel pump. I hooked up the battery and it primed.

After receiving my manifold adapter from BC Broncos it was time to get this sucker operational.

http://img402.imageshack.us/img402/4080/p7280187zv2.jpg

http://img169.imageshack.us/img169/5812/p7310191gz0.jpg


I bought a Toyota gas pedal off E-bay because my pedal I had in there was a booty fabbed piece of crap. I made a little plate adapter to move my pedal inboard a little so it didn't hit the transmission tunnel. The only problem I have now is that I need to build a longer arm on the throttle body because there isn't much pedal travel. It's like trying to wheel with a toggle switch.

http://img258.imageshack.us/img258/8448/p8030236yw4.jpg


I took it out yesterday and tried it at HH, without a hood because I'm working on glassing in a new hood scoop to fit my EFI plenum. I should have that done by the end of the week.

http://img201.imageshack.us/img201/4830/p8030215mt4.jpg

Overly sensitive gas pedal and rocks =

http://img384.imageshack.us/img384/9058/p8030219ao8.jpg

I decided it was time to test my EFI, so after fixing my hub, we went up the Jungle Trail (aka Bonanza Gulch) to test if it did in fact keep the engine running on its side. I'm pretty impressed with the results.

http://img258.imageshack.us/img258/3432/p8030220sh1.jpg


Here's the final breakdown in costs:

http://img216.imageshack.us/img216/1742/efipricinggp2.jpg

Dammit, you took away my reasoning for buying a new shackle bracket.

KEWL F*rd, man! That thing looks kinda shoehorned in there, but it's in there. :D

Just out of curiosity, what headlamps are you running for your 12 volt system?

They are out of a Duece and a Half I believe. I'm trying to remember the part no. though. I believe it was a 3144? It's made for a 13 volt electrical system as I recall. It's an obsolete part for sure. I would check some of the MB and GPW sites for 12 volt conversion lights to make sure.

nice tech! did you have any issues running the stock cam in the motor (ie, not an EFI type cam)?

No, it's an '89 351W out of an E-250. I ported the exhaust of the stock heads after rebuilding them. I put in a Comp Cams 4x4 grind cam for the 351W so the firing order is correct.

The only issue I had was adjusting the base idle. It's a pretty easy thing to do since the 5.0 MAF system doesn't set the TPS voltage at an absolute value like a Toyota EFI does. With a bigger cam it needs the throttle blade opened a bit more at idle to make it run, you also need more base timing. Both of which are easy to do on the 5.0 MAF.

No, it's an '89 351W out of an E-250. I ported the exhaust of the stock heads after rebuilding them. I put in a Comp Cams 4x4 grind cam for the 351W so the firing order is correct.

The only issue I had was adjusting the base idle. It's a pretty easy thing to do since the 5.0 MAF system doesn't set the TPS voltage at an absolute value like a Toyota EFI does. With a bigger cam it needs the throttle blade opened a bit more at idle to make it run, you also need more base timing. Both of which are easy to do on the 5.0 MAF.

cool. i run a crane 2020 roller cam in my 5.0l and had similar issues with getting the idle dialed in. It was pretty easy though with the MAF. I have a 351w roller motor ('96 model) I plan on using someday and wil use the existing harness/ecu and my PMS to run it.

Dang man that is lookin good. Can't wait to see it running in person. I am totally ready for fordyce. Lets get some wheelin done! :smokin:

Dammit, you took away my reasoning for buying a new shackle bracket.

:laughing::laughing::laughing: