How to change from points to HEI ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BigBlock67 · 05-09-2002, 11:16 PM

Finally got the 402 in the '67. I need to change the wiring from the original points distributer to the HEI out of the '72 chevelle. I also have a kill switch that grounded the negative side of the coil. I think that would go to the tach terminal on the HEI but not sure. Any info would be a help.

Project1970 · 05-10-2002, 01:40 AM

As for wiring the distributor, all you need to do is give it a full 12V, hot on start and run. Use a fresh 12ga or bigger wire. I don't think grounding the tach port would ground out the coil, though. Maybe it would, but it is just a tach connection, after all.

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Project 1970 - soon to be seen at http://milhouse.treylis.org:81/

bobs409 · 05-10-2002, 06:32 AM

Where's the best place to hook that wire to? I just noticed that on my truck, whoever added the HEI, spliced the power wire into the old resistor wire. That's a no-no but I've been driving it this way for almost 5 years now with no problems.

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63 Impala*66 Chevelle SS*69 Chevelle*69 C10 Stepside*71 Cheyenne 20*72 Chevelle

Parts for sale:
http://www.angelfire.com/trek/mr409/items4sale.html

69 longhorn · 05-10-2002, 08:28 AM

The best/easiest place to hook the HEI power wire ,is to Ign unfused in the fuse box. Then just clip out the yellow wire to the soleniod,& the white resistor wire. As already posted ,use a 10 or 12 guage wire,you can cut a lenght of HEI feed wire from a boneyard special,& use a rubber grommet through the firewall. Some of the guys have also opted to use an inline fuse(I cant say on the size,mine is not fused). good luck......69longhorn.

BigBlock67 · 05-10-2002, 08:53 AM

Longhorn, I see the yellow wire. Where does the white resistor wire come from and what does it do? Thanks for the replies.

Longhorn Man · 05-10-2002, 08:57 AM

The white was the old coil positive wire.
The grounding cut off switch is something you are unable to do on an HEI. No point in it anyways. But, if you need a kill switch, just wire the hot lead from the IGN UNFUSED, to your cut off swith, then out to your HEI.

------------------
'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
If you need a pic posted, E-mail me at longhornmail@yahoo.com
My name is Andy...not Randy...I'm in Ohio...Not Illinois...close enough?
Columbus Ohio

BigBlock67 · 05-10-2002, 09:24 AM

Thanks Longhorn, That sounds like the perfect way to do it.

05-09-2002, 11:16 PM	#1
BigBlock67 Registered User Join Date: Jan 2001 Location: McKeesport, PA Posts: 123	How to change from points to HEI ? Finally got the 402 in the '67. I need to change the wiring from the original points distributer to the HEI out of the '72 chevelle. I also have a kill switch that grounded the negative side of the coil. I think that would go to the tach terminal on the HEI but not sure. Any info would be a help.

05-10-2002, 01:40 AM	#2
Project1970 14.1 @ 96MPH Join Date: Jul 2001 Location: Mesa, AZ Posts: 2,811	As for wiring the distributor, all you need to do is give it a full 12V, hot on start and run. Use a fresh 12ga or bigger wire. I don't think grounding the tach port would ground out the coil, though. Maybe it would, but it is just a tach connection, after all. ------------------ Project 1970 - soon to be seen at http://milhouse.treylis.org:81/ __________________ Project1970 - LS1 Swap Complete!

05-10-2002, 06:32 AM	#3
bobs409 1969 Custom 30 wrecker Join Date: Sep 2001 Location: Pottsville, Pa Posts: 2,611	Where's the best place to hook that wire to? I just noticed that on my truck, whoever added the HEI, spliced the power wire into the old resistor wire. That's a no-no but I've been driving it this way for almost 5 years now with no problems. ------------------ 63 Impala66 Chevelle SS69 Chevelle69 C10 Stepside71 Cheyenne 20*72 Chevelle Parts for sale: http://www.angelfire.com/trek/mr409/items4sale.html __________________ Bob 63 Impala 283/PG/3.36 (under restoration) 66 Impala 327/PG/3.36 66 Chevelle SS 409/M22/3.55 69 Chevelle 307/PG/3.08 (future restoration) 69 C10 short stepside 454/TH350/3.73 69 Custom 30 tow truck 350/4 spd/4.10 (resto done, CRUISIN TIME!) 71 Cheyenne 20 fleetside 350/4 spd/4.10 71 Chevelle 6/PG/3.08 72 Chevelle 454/M21/4.10

05-10-2002, 08:28 AM	#4
69 longhorn Registered User Join Date: Aug 2001 Location: rock island,il,usa Posts: 5,382	The best/easiest place to hook the HEI power wire ,is to Ign unfused in the fuse box. Then just clip out the yellow wire to the soleniod,& the white resistor wire. As already posted ,use a 10 or 12 guage wire,you can cut a lenght of HEI feed wire from a boneyard special,& use a rubber grommet through the firewall. Some of the guys have also opted to use an inline fuse(I cant say on the size,mine is not fused). good luck......69longhorn. __________________ http://community.webshots.com/user/hotrodhorn

05-10-2002, 08:53 AM	#5
BigBlock67 Registered User Join Date: Jan 2001 Location: McKeesport, PA Posts: 123	Longhorn, I see the yellow wire. Where does the white resistor wire come from and what does it do? Thanks for the replies.

05-10-2002, 08:57 AM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	The white was the old coil positive wire. The grounding cut off switch is something you are unable to do on an HEI. No point in it anyways. But, if you need a kill switch, just wire the hot lead from the IGN UNFUSED, to your cut off swith, then out to your HEI. ------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. If you need a pic posted, E-mail me at longhornmail@yahoo.com My name is Andy...not Randy...I'm in Ohio...Not Illinois...close enough? Columbus Ohio

05-10-2002, 09:24 AM	#7
BigBlock67 Registered User Join Date: Jan 2001 Location: McKeesport, PA Posts: 123	Thanks Longhorn, That sounds like the perfect way to do it.



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