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-   -   HEI D'oh (http://www.ifsja.org/forums/vb/showthread.php?t=184719)

jeepman1 02-23-2018 12:39 PM

HEI D'oh
 
I looked through the archived stuff, I really did.. So, what's the right wire to hook up from a stock 83 harness w/360 to an HEI (Summitt) dizzy? I have a two wire plug on my alt. TIA :D

J20 project 02-24-2018 02:30 PM

Maybe looking in the wrong place for starters...

I set mine up by finding the approx. 10 ga switched power wire coming from the bulkhead connector area to the old electronic ignition brain on the driver side fenderwell.
Cut that wire away from the brain box, grafted it to 10ga all the way to the hot wire of the new distributer. Having a 3 wire connector on the HEI, one is hot, the other is ground, the other is tach...

I didn't use a summit hei though.. Bought a generic gm style off of amazon. I did however switch over my distributer gear to the new distributer.

J20

charlie500 02-25-2018 08:19 AM

I bought a Skip White for 50bucks it was awesome, but i didn't switch the new dizzy gear for the old gear and eventually the new dizzy gear tore up my old cam gear. Expensive lesson.

charlie500 02-25-2018 08:22 AM

Cool comparison between MSD Street Fire and Skip White TSP here.

http://www.hotrodders.com/forum/skip...ed-179906.html

amcdv 02-26-2018 04:58 AM

hei
 
ive always hooked up my power wires for hei and msd boxes to the "I" terminal on the solenoid mounted on the fenderwell.... not the "S" terminal....my 2 cents...amcdv

Alys4x4 02-26-2018 07:59 PM

Assuming you are coming from a coil setup...the positive wire on your coil should be hot all times when key is on/cranking. Use that wire for your battery wire on HEI. you can also do a nifty relay setup with 10ga wire.

jeepman1 02-28-2018 03:35 PM

yep had a coil on it previously.
 
Quote:

Originally Posted by Alys4x4
Assuming you are coming from a coil setup...the positive wire on your coil should be hot all times when key is on/cranking. Use that wire for your battery wire on HEI. you can also do a nifty relay setup with 10ga wire.

I will take the wire from the old horseshoe positive and hook it to the "batt" on the new dizzy..Thanks

J20 project 02-28-2018 07:22 PM

[quote]will take the wire from the old horseshoe positive and hook it to the "batt" on the new dizzy..Thanks/QUOTE]
Interesting, the gm style HEI I installed instructions said that it needed to be 10 ga all the way through. Th normal horseshoe type is what, 16 ga?

J20 project 02-28-2018 07:26 PM

One thing to remember is that the coil hot wire is 12 volts at start and 6 volts at run.


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