I just got a 1985 Bronco II EB 4x4 with the 2.8 for $16.22 and here is what I've replaced:
altenator, selenoid, voltage regulator, battery, brake booster, master cylinder, belts, hoses, plugs, wires, o2 sensor, air cleaner, and various cracked vacuum lines.
Even after all this, I absolutely love this thing, and I never thought I'd say that about a Bronco II (I've been an avid EARLY bronco fan my whole life).

Anyways, after all that I see that the carb needs to go, and the lifters are tapping. The engine and transmission have been rebuilt so not worried too much about those.

THE QUESTION: It gets about 6 mpg's and I want to do the duraspark conversion. I found a good step by step at bronco.org but there is no list of cost. I want to know exactly what to buy for the conversion.

Also, I have $1000 to spend on this beast. I've decided on the conversion and some tires/wheels, any other ideas. Thanks in advance, this forum rocks
Ex

 

I've been wondering about that also. Do you have a better address for the bronco site? When I type it in it goes to the Bronco's football site.

Thanks,
Bob

 

I did the Duraspark conversion on my 84 Bronco II and it cost me about $40 but I used junkyard parts.I used a Duraspark distributor from a late 70's Capri and instead of using a Duraspark module I used a GM HEI module instead.The wiring is very simple and it allows you to keep your stock TFI coil.If you do a search on Yahoo! for "Duraspark HEI" about the 4th hit is a site with the schematics.About the same time I replaced the stock 2 bbl carb with a Holley I picked up off ebay.It was a Ford replacement style carb so it had the linkage for the kickdown lever and the fuel filter location was the same so the swap was easy.I rebuilt it and put some smaller jets in and that was about it.Doing both things made a big difference in the throttle response and seat of the pants power.One thing you might try is if you change carbs and distributor you no longer need your oxygen sensor.You can use it however to help you jet the new carb, the oxygen sensor produces it's own voltage so all you need is a voltmeter that reads below 1v.Just run a wire from the oxygen sensor to the positive side of the voltmeter and ground the negative somewhere in the truck.The oxygen sensor is designed to produce about 0.5 volt when the air/fuel ratio is at 14.7 to 1,leaner gets you a lower voltage and richer gets you a higher voltage.Try and jet the carb so that you get a reading of about .6-.8v when you are driving down the highway.

 

Thanks for the information guys.