Help changing points to HEI - Team Camaro Tech
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post #1 of 5 (permalink) Old Mar 16th, 10, 06:06 PM Thread Starter
John
 
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Location: Harrison, AR
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Help changing points to HEI

Wanting to change the original point set up on a 1970 350 that is currently running in a 1972 Camaro. I'm going to replace the cast iron 2 barrel manifold for an aluminum intake and holley 600. It has the ceramic resister, I believe that I take the wire before the resister and route it to the pos. side of the HEI coil. Is there something else I'm missing. I heard some talk about power going to the alternater????
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post #2 of 5 (permalink) Old Mar 16th, 10, 06:15 PM
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Al
 
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Re: Help changing points to HEI

You have it correct.
(I didn't know second gens used a ceramic resistor) Measure the voltage before the resistor and make sure it's 12v. Your new 12v wire will need to have the correct plug end on it to plug into the "BATT" terminal on the HEI. Don't do anything to the alt - you heard wrong.


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post #3 of 5 (permalink) Old Mar 16th, 10, 07:44 PM Thread Starter
John
 
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Location: Harrison, AR
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Re: Help changing points to HEI

Thank you. I also heard that on older models that ran points, a 12v wire also ran to the starter for ignition and the resister to the coil dropped voltage to around 9.5. So for my info. I have nothing to do with this 12v starter wire from ignition. Yes, I do know of the pos battery wire running to the starter.
Also, this car has a tach. Where in the old set up is it located and do I run that wire to the HEI as well.
Thanks for your time!
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post #4 of 5 (permalink) Old Mar 17th, 10, 03:07 AM
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Re: Help changing points to HEI

Yes, green wire from OE harness is tach.
Connect it to TACH terminal of HEI, next to BAT terminal of HEI.
Ceramic resistor is not OE design. If supply wire is cloth sheathed, has a cloth coat, this is the OE resistive wire from ignition switch. You should run a new 12 AWG wire from IGN spade on fuse panel to HEI and tie back and insulate the cloth wire.

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post #5 of 5 (permalink) Old Mar 17th, 10, 06:08 AM Thread Starter
John
 
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Re: Help changing points to HEI

Great advise. Thank you! You saved me a lot of what to do thinking and preventing possible wrong wire splice. Have good day, John
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