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300 Distributor swap

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Old Apr 21, 2023 | 01:15 PM
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300 Distributor swap

Have an unknown year 300 (used to be injected) in an old beater 85 4x4 with electronic ignition and a wiring system from heck. This is a fence row truck that has came back out of the row.
Tired of ignition issues. Burning up control boxes etc.
Won't an older 300 point distributor fit right in if I remember correctly? Been a long time since I've wrenched 240 and 300's.
Want to ask before I search out a point distributor.
Steve
 
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Old Apr 22, 2023 | 03:04 PM
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All 240/300 distributors are interchangeable.
What do you have for an intake manifold and carburetor?
 
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Old Apr 22, 2023 | 03:13 PM
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Yes, figured that out yesterday as no answers to the question and I plowed ahead getting it done, after spending 4 hours getting the point distributor freed up from the 6cyl in an old 64.
Calipers confirmed the fit so then I wire brushed the corrosion from the 0-ring groove and installed it.
Hit the switch and 1-2 seconds it fired and idled.
 
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Old Apr 22, 2023 | 03:18 PM
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what are you using for an intake manifold and carburetor?
 
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Old Apr 22, 2023 | 03:24 PM
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Offenhauser with a 4bbl Carter
 
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Old Apr 22, 2023 | 06:55 PM
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You running a resister to cut back the volts to the points?
If not you could burn them up in no time.
Dave ----
 
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Old Apr 22, 2023 | 08:25 PM
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Originally Posted by FuzzFace2
You running a resister to cut back the volts to the points?
If not you could burn them up in no time.
Dave ----
Yes. That was the first thing I installed after taking all the electronic stuff and wiring off.
 
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Old Apr 24, 2023 | 06:35 PM
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I wonder if not running a resister with the electronic setup was why you were burning them up?
Dave ----
 
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Old Apr 24, 2023 | 07:13 PM
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Originally Posted by FuzzFace2
I wonder if not running a resister with the electronic setup was why you were burning them up?
Dave ----
I put in a resistor after the first box smoked.

They had a toggle switch for ignition, and a push button for the starter. Wires running all over h3ll so I pulled all that crap and put in a universal key switch and ran new wires to the box.....thus realizing I had no resistor wire in the shop and not wanting to run to town, so I had an extra resistor for my 860 tractor and used it.
Then the factory coil smoked later on, taking out the box yet again.
Then I believe the distributor pickup shorted, taking out the box a third time. Not sure on that, so I just pulled it all off and went with a old style point system.
This all over a couple of years. Sometime during all that it smoked the resistor also.
 
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