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OK sounds good. I should be done soaking and cleaning the parts by tomorrow morning. Several were coated with thick dirt, grime and carbon so I've had to soak them for a very long time. I took the other carb off the truck last night in preparation for the switch. I noticed the looseness wasn't coming from the carb, but from the piece of equipment that the carb sat on. There is something sitting on top of the intake and the carb sits on top of it. Hopefully it'll tighten up, but the bolts from the carb were on pretty tight to begin with.
that's the egr plate/ adapter. there is a gasket between it and the intake that needs to be replaced as well. did the j yard truck's wireing harness look whole? you may want to go back and get it, might make life easier to put it all back together
Unfortunately, I didn't pay much attention to the wiring. I popped the hood and almost the entire engine was gone. The block with Valve cover, distributor and plug wires were still there. The carburetor was actually sitting in the truck cab. Easiest pick-n-pull I've ever done. I'll go back there next week and look for the wiring harness, but I' doubt its there.
Ok, before I decide which direction I want to go, here are some more pictures of the nonfeedback carb. Can you look at it and tell me if it is missing anything?? I can get the butterfly valve from the feedback carb, but not sure if it is missing anything else.
If its not missing too much, it'll probably be cheaper to switch over to duraspark. My fear with the junkyard carb is if those sensors don't work it'll get real expensive replacing them.
looks pretty whole, you should be able to use the same kit to rebuild it. do a search for the duraspark conversion, it's been covered a bunch of times.go to carbdford.com/tech/HEI/hei.html for a hei conversion with a duraspark distributer, that's what I have on the 82 now.
for the duraspark conversion, wireing harness is different, get the one that comes with the distributer, and the box. it's plug and play though, you don't have to change connections. if you go with the hei, you use the harness that comes out of the distributer you get from the junk yard, make sure to mount the hei modual on a piece of aluminum , so it cools, you need to put dielectric grease between it and the modual.
Am I reading that correctly that you don't need to change your coil?? Also do you use the same wiring harness that you need for duraspark??
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Ignition Lesson of the Month: Hystereses, the difference between the timing as the rpm and vacuum increases to the timing as rpm and vacuum decrease, needs to be kept to a minimum. A precise advance curve accomplishes this.