Two days ago, I converted my '84 F150, With a 300 I6, 4 Speed Transmission, and Four Wheel Drive over to the Duraspark II ignition system. Here's how I did it:
First things first. Why convert to the older Duraspark II (DSII) ignition system?
Simple. the DSII system is a much more simple and reliable system than the ignition system found on F-Series trucks made from '84-'86. It doesn't require tons of wires, a computer, or that terrible electronic feedback carburetor that never seems to work right. The system also features an automatic spark retard while cranking to reduce the load applied to the starter motor.
What you'll need:
To convert your truck to the DSII system, you'll need a few parts.
So, I've pretty much gotten everything prepped and ready for the Duraspark II conversion. However, I was looking over my wiring harness, and thought that I had it all figured out, until I noticed one wire with a single plug on it. I've looked in previous threads/write ups, and I haven't been able to figure it out. Any ideas?
I'm just trying to make sure I have all of my ducks in a row before I attempt to do this Duraspark conversion. I have an 86 F-150 I-6, 4 speed, 4x4 and someone has installed a manual choke to the current setup and it runs like crap at idle.
I have the control module and the wiring harness off of a 78 F-150 and I was just going to buy a rebuilt distributor for a 78 year truck ($50) and a coil ($22) for the same.
First of all, what else do I need? I have read that I need to get a carb off an older truck as well. The parts guy at O'Reilly's asked if the distributor was a one or two vacuum line setup. I'm not sure if I get a carb off of an older truck if that would make a difference.