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08-01-2012, 07:40 AM
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#1 |
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Registered User
Join Date: Jun 2011
Location: Rio Rancho NM
Posts: 503
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HEI distributor 12volt ignition source?
I am in the process of starting up an engine that had points but recently installed a HEI distributor. Is the 12v a constant 12v while the key is on or only while cranking of the engine? I hope this makes sense.
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08-01-2012, 08:04 AM
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#2 |
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Registered User
Join Date: Feb 2012
Location: Ruskin Florida
Posts: 4,595
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Re: HEI distributor 12volt ignition source?
Should be constant while engine is running. I ran mine to a switch and then to a battery block I installed inside the cab. Oops..now you all know! Dang it. Still gotta find the switch though.
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70 swb 4x4 406sbc 700r4 203/205 d60/14blt locker yadda yadda http://67-72chevytrucks.com/vboard/s...88#post6935688 Yeller 72 Blazer 2wd conversion project "No Daggum Money" http://67-72chevytrucks.com/vboard/s...d.php?t=550804 LS1-T56 3.73 LSD super budget build Blanco-2014 Sierra SWB https://67-72chevytrucks.com/vboard/...d.php?t=810350 |
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08-01-2012, 08:16 AM
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#3 | |
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Registered User
Join Date: Jun 2011
Location: Rio Rancho NM
Posts: 503
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Re: HEI distributor 12volt ignition source?
Quote:
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08-01-2012, 10:04 AM
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#4 |
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Registered User
Join Date: Jul 2011
Location: El Campo, Tx
Posts: 1,246
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Re: HEI distributor 12volt ignition source?
It is constant. If I recall correctly it is a pink wire. If in doubt just throw voltmeter on it and will figure out really fast. One thing to keep in mind with HEI (and the reason I got away from it) is that you MUST have at least 12 volts to it or will start getting misfires. Really annoying if you do not drive truck continuously or have weak batteries or charging system.
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72 Chevy blue LWB, 99% original Oklahoma truck, 28,000 miles 72 Chevy SWB: http://67-72chevytrucks.com/vboard/s...d.php?t=486626 (Attempt/Mistake #2) 2003 Harley Davidson Dyna Superglide with 2007 Street Bob front end 2000 Ford F350 Powerstroke 4WD CCLB, 310,000 miles running great (STOLEN St. Patricks Day 2014 AND NEVER RECOVERED) 2002 Ford F250 Powerstroke 4WD CCLB (To replace stolen one) Hook em Horns!!! |
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08-01-2012, 10:51 AM
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#5 |
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Senior Member
 
Join Date: Sep 2005
Location: Lewisville, Nc
Posts: 10,238
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Re: HEI distributor 12volt ignition source?
Run a 10 gauge wire from your ignition unfused plug in your fuse panel to the Dizzy
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David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
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08-01-2012, 10:53 AM
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#6 |
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Senior Member
Join Date: Sep 2005
Location: Lewisville, Nc
Posts: 10,238
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Re: HEI distributor 12volt ignition source?
use the ign unfused
__________________
David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
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08-01-2012, 12:12 PM
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#7 |
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*** That's interesting ***
Join Date: Oct 2008
Location: Pittsburgh, PA
Posts: 2,772
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Re: HEI distributor 12volt ignition source?
+1 on the IGN. UNFUSED terminal.
__________________
Tom  Chevy by day... 1969 Chevy C30 Rollback Tow Truck -- 383 stroker, 4L80E 2011 Chevy Caprice PPV 9C3 6.0L 1995 Chevy Caprice 9C1 1994 Chevy Caprice 9C1 #3 1995 Chevy Caprice Wagon #2 1995 Chevy Impala SS Mopar by night... 1969 Dodge Charger 1972 Chrysler Newport 2dr Hardtop (27K miles) Plus others... |
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08-01-2012, 12:23 PM
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#8 |
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Registered User
Join Date: Jun 2011
Location: Rio Rancho NM
Posts: 503
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Re: HEI distributor 12volt ignition source?
Thanks for the input.
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08-01-2012, 08:32 PM
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#9 | |
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Active Member
 
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: HEI distributor 12volt ignition source?
Quote:
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68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive... |
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08-01-2012, 09:47 PM
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#10 |
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Registered User
Join Date: Jul 2011
Location: El Campo, Tx
Posts: 1,246
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Re: HEI distributor 12volt ignition source?
Good point 68gmsee. I had problems always trying to start the 535 BBC because the starter stole so much juice to turn it over that the HEI wouldn't have enough to fire the engine off the way I wanted. MSD fixed it all though
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72 Chevy blue LWB, 99% original Oklahoma truck, 28,000 miles 72 Chevy SWB: http://67-72chevytrucks.com/vboard/s...d.php?t=486626 (Attempt/Mistake #2) 2003 Harley Davidson Dyna Superglide with 2007 Street Bob front end 2000 Ford F350 Powerstroke 4WD CCLB, 310,000 miles running great (STOLEN St. Patricks Day 2014 AND NEVER RECOVERED) 2002 Ford F250 Powerstroke 4WD CCLB (To replace stolen one) Hook em Horns!!! |
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