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Offline 87w-150

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Dual pick up coils on a 318...
« on: November 14, 2011, 12:27:47 AM »
Does anyone know any of the pros and or cons to this?  Or does it not make a differance?  Also does the HEI ignition upgrade work with the dual pick ups?  Going to be adding a 4bbl to my 318 in the W-150 in a few weeks, getting rid of the lean burn system, just trying to figure out all the electrical changes needed for this, any info would be greatly appreciated.  Thank you everyone
« Last Edit: November 14, 2011, 09:48:50 PM by 87w-150 »

Offline TNOleBlue85

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Re: Dual pick up coils on a 318...
« Reply #1 on: November 14, 2011, 01:04:09 AM »
I recently did the HEI conversion on my '85 Power Ram but mine just has  the single pickup. I think you need the single pickup distributor but im not 100% positive about that. You will need a distributor with the vacuum advance thing on it for sure. The other guys on this site are great and can/will correct me if I am wrong on this. I really like the upgrade on mine as the truck seems to start and run better than what i had with the stock ignition. I also left the entire stock components on the truck to use as a backup ignition including the coil so if the hei module or coil goes bad I can just plug it all back up and hopefuly be on my way again in a matter of a few minutes. Good luck!!
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Offline KThaxton

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Re: Dual pick up coils on a 318...
« Reply #2 on: November 14, 2011, 11:13:21 AM »
There is no reason to intentionally use a dual pickup, they're kind of a PITA. However, if you already have a dual pickup distributor, you could simple remove the "Run" pickup and use it as a single.
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Offline DODGEBOYS

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Re: Dual pick up coils on a 318...
« Reply #3 on: November 14, 2011, 03:31:46 PM »
There is no reason to intentionally use a dual pickup, they're kind of a PITA. However, if you already have a dual pickup distributor, you could simple remove the "Run" pickup and use it as a single.

the only problem with that is theres no vacuum advance
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Offline KThaxton

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Re: Dual pick up coils on a 318...
« Reply #4 on: November 14, 2011, 04:02:49 PM »
Both of my dual pickup distributos have vacuum advance.
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Offline 87w-150

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Re: Dual pick up coils on a 318...
« Reply #5 on: November 14, 2011, 08:30:03 PM »
Thanks for the info you guys... I'm gonna do the upgrade on my W-150, it currently has the lean burn sytem and was trying to figure out if I should keep the same wiring harness and modify it or change the entire engine harness... I found one at the junk yard this past weekend but it was for the dual pick up.  Also just today on my W-350 while driving to work it cut out and died on me twice along with a loud back fire.  Each time I just pulled over and it started right back up...The rest of the day and on my way home it ran good as it usually does..  Throughout the day when ever I was near the ruch it had a slight odor of burning plastic/electronics... I kinda suspect it might be the ICM, had a problem similar a few yrs ago and that was it, replaced it with no problems since until today.  I am the 2nd owner of this truck, no mods, nothing hacked out on it etc... I would like to possibly do the HEI upgrade on this as well and this truck has dual pick ups on it w/ vaccum advance...  does anyone know which coil is the start and which one is the run? Which plug would you hook up the HEI to since it has 2? 

Still trying to figure out how to get a picture of these on here...haha

Offline 340SHORTY

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Re: Dual pick up coils on a 318...
« Reply #6 on: November 15, 2011, 04:51:49 AM »
IIRC the pu unit that is on the right side in the dist, like a single pu dist has  is the primary one. I believe it fires on the other one that IIRC is retarded in timing so it starts easier.
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Offline wycowboy

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Re: Dual pick up coils on a 318...
« Reply #7 on: November 15, 2011, 08:35:42 AM »
the only problem with that is theres no vacuum advance

The dual pickup I had on my 85 RC had a vacuum advance canister on it.

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Offline 87w-150

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Re: Dual pick up coils on a 318...
« Reply #8 on: November 15, 2011, 08:54:51 AM »
Thanks for the advice... Going to see about eliminating the dual coil set up on my 350, going back to the junk yard for a wiring harness for the 150 next week... Hopefully if it ever stops raining here I'll be able to get some of this stuff done!!  haha

Offline SuperBurban

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Re: Dual pick up coils on a 318...
« Reply #9 on: November 15, 2011, 10:55:04 AM »
The dual pickup I had on my 85 RC had a vacuum advance canister on it.

Chris
They did have the dual pickup dizzys for both the lean burn, and the electronic ignition.
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Offline beer930

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Re: Dual pick up coils on a 318...
« Reply #10 on: November 16, 2011, 10:51:32 AM »
I saved this picture a while back when I was wondering which one was start and which was run
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Offline 87w-150

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Re: Dual pick up coils on a 318...
« Reply #11 on: November 16, 2011, 08:11:26 PM »
Which is the coil thats not needed, the start coil?

Offline SuperBurban

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Re: Dual pick up coils on a 318...
« Reply #12 on: November 16, 2011, 08:37:26 PM »
It really does not matter, The run one has the right plug that will work with the normal ignition setup. But in reality, either one can be used, once you set the timing then that one is in the right position.
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