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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

HEI Distributor

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Old Jun 19, 2017 | 05:12 PM
  #1  
neelyjosh's Avatar
neelyjosh
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HEI Distributor

I have a 1984 f150 with a 300 and I am putting a 1990 302 HO. I know I need the wiring harness to make the distributor vacuum advance work. Do I need a HEI distributor. Does a HEI distributor still need a coil or is it on top of the distributor.
Thanks
 
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Old Jun 19, 2017 | 05:17 PM
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CountryBumkin
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Why don't you just a get a Dura-spark distributor? It's an excellent distributor and your truck has the wiring harness in place.

The key is, whatever brand you buy, to set up the advance curve properly for your engine/truck.


Scotty at Re-incarnation sells them with a custom advance curve (setup for your application) for $155 shipped. Rein"Car"nation High Performance / products or see

Duraspark_distributor_product_information1


But to answer your question; the HEI distributor has the coil built into the cap. Are you going to run a carb - or go fuel injection?
 
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Old Jun 19, 2017 | 05:33 PM
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HEI Distributor

Originally Posted by CountryBumkin
Why don't you just a get a Dura-spark distributor? It's an excellent distributor and your truck has the wiring harness in place.

The key is, whatever brand you buy, to set up the advance curve properly for your engine/truck.


Scotty at Re-incarnation sells them with a custom advance curve (setup for your application) for $155 shipped. Rein"Car"nation High Performance / products or see

Duraspark_distributor_product_information1


But to answer your question; the HEI distributor has the coil built into the cap. Are you going to run a carb - or go fuel injection?
I am going with a carburetor. I was told that I have to buy a wiring harness since my 300 does not have a vacuum advance and the distributors have a vacuum advance.
 
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Old Jun 19, 2017 | 05:53 PM
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CountryBumkin
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A vacuum advance is a "mechanical device" that is built into the distributor. It has nothing to do with wiring. It uses a vacuum hose from the carb or manifold to work.


Do you have the "Ignition module box" that is mounted on the fender now - or the module that is mounted on the distributor? See here 1984 FORD F-150 4.9L 300cid L6 Ignition Control Module (ICM) | RockAuto that will tell us what you have for a wiring harness.


If you have the fender mounted module, you can use the wiring harness on the truck to plug the new DuraSpark distributor into, then you would use the ignition coil you already have.
 
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Old Jun 19, 2017 | 05:55 PM
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HEI Distributor

My truck does not have the fender mounted ignition module. It has the smaller one that you see on the rock auto page.
 
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Old Jun 19, 2017 | 08:16 PM
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If you go with the Ford duraspark II, you need the harness. If you go with the HEI, you do not need the harness, you just need to run a new heavy wire from the HEI to the keyswitch.
 
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Old Jun 19, 2017 | 08:19 PM
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Originally Posted by Franklin2
If you go with the Ford duraspark II, you need the harness. If you go with the HEI, you do not need the harness, you just need to run a new heavy wire from the HEI to the keyswitch.
What gauge wire would I need.
 
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Old Jun 19, 2017 | 08:27 PM
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12 gauge. The HEI takes a lot of power to run it. It's not a bad ignition system.

I have heard of some problems now and again with the very cheap units on ebay. But that's about it.
 
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Old Jun 20, 2017 | 04:45 AM
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I am not a big fan of the HEI dist. but in your case needing a dist. wiring & box the HEI is the best way to go.
The wiring needed for the HEI is really easy to make and using the relay.
My .02
Dave ----
 
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