How to hook up HEI - The 1947 - Present Chevrolet & GMC Truck Message Board Network

3r!c84 · 11-25-2010, 10:39 AM

Hey I put in a msd box and the fried. So how do I hook it back up the stock way? Little help here
Posted via Mobile Device

*nbpro* · 11-25-2010, 11:12 AM

http://www.msdignition.com/forum/index.php

3r!c84 · 11-25-2010, 11:14 AM

yea i want to get rid of the msd box. we already know its bad.

*nbpro* · 11-25-2010, 11:29 AM

yeah i read where you said it was fried. i just thought that would be a good place to start since they made the thing. could be some additional timing settings, and so forth that need to be considered. here's something else i found off that same website.

http://www.msdignition.com/uploadedF...structions.pdf

3r!c84 · 11-25-2010, 11:46 AM

Yea we where doing the tests yesterday. Came up with nothing. I just need to know how to wire up the stock hei. What do I plug into the B- and c+ plugs and all of that
Posted via Mobile Device

*nbpro* · 11-25-2010, 12:02 PM

just reverse process

**PRattenbury** · 11-25-2010, 12:44 PM

All it needs is the BATT wire hooked up, no?

S10Fan · 11-25-2010, 01:07 PM

One is for ignition and the other goes to the tach if equipped.

3r!c84 · 11-25-2010, 01:11 PM

thats it? just a 12volt hook up ? where it says batt? what about the c/ground/b hook ups in the back?

and the 2 wire pig tail coming from the bottom of the dist

S10Fan · 11-25-2010, 01:19 PM

Quote:

Originally Posted by 3r!c84

thats it? just a 12volt hook up ? where it says batt? what about the c/ground/b hook ups in the back?

and the 2 wire pig tail coming from the bottom of the dist

There should be 3 wires (some have 4) coming from the base of the HEI that plugs into the cap. The most outward connectors on the cap are for ignition and the tach.

3r!c84 · 11-25-2010, 01:25 PM

Quote:

Originally Posted by S10Fan

There should be 3 wires (some have 4) coming from the base of the HEI that plugs into the cap. The most outward connectors on the cap are for ignition and the tach.

the top

bottom has 2 coming out

cableguy0 · 11-25-2010, 01:29 PM

That distributor was converted. I bet theres no module at all. Those wires coming out are for the magnetic pickup to trigger the msd box. I doubt theres a module inside that distributor. Thats not the normal way to hook up an msd box. Someone went way too far for no reason and it probably has something to do with you cooking the box.

63chevyll · 11-25-2010, 01:34 PM

2 common problems i see with HEI's

the groud under the coil and make sure the engine has a good ground

S10Fan · 11-25-2010, 01:41 PM

Quote:

Originally Posted by cableguy0

That distributor was converted. I bet theres no module at all. Those wires coming out are for the magnetic pickup to trigger the msd box. I doubt theres a module inside that distributor. Thats not the normal way to hook up an msd box. Someone went way too far for no reason and it probably has something to do with you cooking the box.

I tend to agree.

3r!c84..............Do you have access to an honest to goodness STOCK HEI?

3r!c84 · 11-25-2010, 01:44 PM

Quote:

Originally Posted by S10Fan

I tend to agree.

3r!c84..............Do you have access to an honest to goodness STOCK HEI?

no i dont. i bet i can hit the junkyard and pull one. or pull parts from one. what do i need to convert this back? or whatever

S10Fan · 11-25-2010, 01:52 PM

Quote:

Originally Posted by 3r!c84

no i dont. i bet i can hit the junkyard and pull one. or pull parts from one. what do i need to convert this back? or whatever

I don't remember if you can just drop in a module with those. I can't remember what the inside looks like.

burger · 11-25-2010, 02:14 PM

Quote:

Originally Posted by S10Fan

I don't remember if you can just drop in a module with those. I can't remember what the inside looks like.

A replacement module from a parts store wouldn't contain the factory harness (the one that plugs between the module and the cap).

Check out this harness/module package from Speedway: clicky.

I would replace the coil & cap as well.

S10Fan · 11-25-2010, 02:22 PM

Quote:

Originally Posted by burger

A replacement module from a parts store wouldn't contain the factory harness (the one that plugs between the module and the cap)..

Thanks for the link, that's what I couldn't remember, the "pickup" and plug configuration.

.....and BTW, stock modules are cheap, buy an extra one and throw it in the glove box. While on the side of the road on wet rainy night you'll be glad you have a spare. Plus, having a spare keeps the one in the HEI from retiring early. LOL.

3r!c84 · 11-25-2010, 02:27 PM

sweet thankyou i will get one of them this weekend. and the coil is new i just got it 2 days ago cus i thought it a bad coil. when it was only the box i fucd up

*nbpro* · 11-26-2010, 05:41 PM

Quote:

Originally Posted by cableguy0

That distributor was converted. I bet theres no module at all. Those wires coming out are for the magnetic pickup to trigger the msd box. I doubt theres a module inside that distributor. Thats not the normal way to hook up an msd box. Someone went way too far for no reason and it probably has something to do with you cooking the box.

I agree. also
this link shows how to set it up and may be reverse the process

http://www.msdignition.com/uploadedF...structions.pdf

ont_guy_38 · 11-26-2010, 07:45 PM

Quote:

Originally Posted by cableguy0

That distributor was converted. I bet theres no module at all. Those wires coming out are for the magnetic pickup to trigger the msd box. I doubt theres a module inside that distributor. Thats not the normal way to hook up an msd box. Someone went way too far for no reason and it probably has something to do with you cooking the box.

Do you not take the module out with an msd box? I don't know anything about them but am picking one up this weekend

cableguy0 · 11-26-2010, 08:35 PM

you can just leave it there unhooked. use the existing mag pickup to trigger the box its simple.msd also sells an adapter harness

3r!c84 · 11-26-2010, 09:28 PM

Quote:

Originally Posted by cableguy0

you can just leave it there unhooked. use the existing mag pickup to trigger the box its simple.msd also sells an adapter harness

Got a link to this adaptor ?
Posted via Mobile Device

cableguy0 · 11-26-2010, 09:46 PM

You have it already. Thats the two wires hanging out of the distributor. It plugs into the plug for the magnetic pickup under the cap that used to plug into the hei module then plugs into the two wire trigger plug on the msd box. If you cooked the msd box theres a good chance you have another issue in the truck. They are very stable when the rest of the wiring is correct. The box should always be unplugged when charging the battery or every hooking up battery cable. They need a good ground as well.

ont_guy_38 · 11-26-2010, 10:21 PM

whats a better box msd 6al or crane 6000-6440 ?

11-25-2010, 10:39 AM	#1
3r!c84 Badass Join Date: Jan 2009 Location: lox. fl Posts: 4,586	How to hook up HEI Hey I put in a msd box and the fried. So how do I hook it back up the stock way? Little help here Posted via Mobile Device __________________ Think outside the box? -84c10 (1stcar)→My Build← -00 Saturn 5spd drop a gear and disappear! 1/4:13:90

11-25-2010, 11:12 AM	#2
nbpro Account Suspended Join Date: Dec 2008 Location: Huntsville,AL Posts: 2,119	Re: How to hook up HEI http://www.msdignition.com/forum/index.php

11-25-2010, 11:14 AM	#3
3r!c84 Badass Join Date: Jan 2009 Location: lox. fl Posts: 4,586	Re: How to hook up HEI yea i want to get rid of the msd box. we already know its bad. __________________ Think outside the box? -84c10 (1stcar)→My Build← -00 Saturn 5spd drop a gear and disappear! 1/4:13:90

11-25-2010, 11:29 AM	#4
nbpro Account Suspended Join Date: Dec 2008 Location: Huntsville,AL Posts: 2,119	Re: How to hook up HEI yeah i read where you said it was fried. i just thought that would be a good place to start since they made the thing. could be some additional timing settings, and so forth that need to be considered. here's something else i found off that same website. http://www.msdignition.com/uploadedF...structions.pdf Last edited by nbpro; 11-25-2010 at 11:31 AM.

11-25-2010, 11:46 AM	#5
3r!c84 Badass Join Date: Jan 2009 Location: lox. fl Posts: 4,586	Re: How to hook up HEI Yea we where doing the tests yesterday. Came up with nothing. I just need to know how to wire up the stock hei. What do I plug into the B- and c+ plugs and all of that Posted via Mobile Device __________________ Think outside the box? -84c10 (1stcar)→My Build← -00 Saturn 5spd drop a gear and disappear! 1/4:13:90

11-25-2010, 12:02 PM	#6
nbpro Account Suspended Join Date: Dec 2008 Location: Huntsville,AL Posts: 2,119	Re: How to hook up HEI just reverse process

11-25-2010, 12:44 PM	#7
PRattenbury Senior Member Join Date: Feb 2010 Location: Maumelle, AR Posts: 478	Re: How to hook up HEI All it needs is the BATT wire hooked up, no?

11-25-2010, 01:07 PM	#8
S10Fan Old Heap Driver Join Date: Mar 2008 Location: Newport News, Va Posts: 2,642	Re: How to hook up HEI One is for ignition and the other goes to the tach if equipped. __________________ _____________________________ Bryan '99 Silverado 1500, 4.3, 5-speed, reg cab, short bed '50 Chevy 2DR Hard Top, 350/350, M2 Front End, 3:08 gear, cruiser. '40 F**d Sedan, all Chevy power, Heidt's front end, TCI rear, nice driver.

11-25-2010, 01:11 PM	#9
3r!c84 Badass Join Date: Jan 2009 Location: lox. fl Posts: 4,586	Re: How to hook up HEI thats it? just a 12volt hook up ? where it says batt? what about the c/ground/b hook ups in the back? and the 2 wire pig tail coming from the bottom of the dist __________________ Think outside the box? -84c10 (1stcar)→My Build← -00 Saturn 5spd drop a gear and disappear! 1/4:13:90

11-25-2010, 01:29 PM	#12
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	Re: How to hook up HEI That distributor was converted. I bet theres no module at all. Those wires coming out are for the magnetic pickup to trigger the msd box. I doubt theres a module inside that distributor. Thats not the normal way to hook up an msd box. Someone went way too far for no reason and it probably has something to do with you cooking the box. __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member. Last edited by cableguy0; 11-25-2010 at 01:34 PM.

11-25-2010, 01:34 PM	#13
63chevyll gets board easy....... Join Date: Mar 2009 Location: Colorado Springs Posts: 717	Re: How to hook up HEI 2 common problems i see with HEI's the groud under the coil and make sure the engine has a good ground

11-25-2010, 02:27 PM	#19
3r!c84 Badass Join Date: Jan 2009 Location: lox. fl Posts: 4,586	Re: How to hook up HEI sweet thankyou i will get one of them this weekend. and the coil is new i just got it 2 days ago cus i thought it a bad coil. when it was only the box i fucd up __________________ Think outside the box? -84c10 (1stcar)→My Build← -00 Saturn 5spd drop a gear and disappear! 1/4:13:90

11-26-2010, 08:35 PM	#22
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	Re: How to hook up HEI you can just leave it there unhooked. use the existing mag pickup to trigger the box its simple.msd also sells an adapter harness __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

11-26-2010, 09:46 PM	#24
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	Re: How to hook up HEI You have it already. Thats the two wires hanging out of the distributor. It plugs into the plug for the magnetic pickup under the cap that used to plug into the hei module then plugs into the two wire trigger plug on the msd box. If you cooked the msd box theres a good chance you have another issue in the truck. They are very stable when the rest of the wiring is correct. The box should always be unplugged when charging the battery or every hooking up battery cable. They need a good ground as well. __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

11-26-2010, 10:21 PM	#25
ont_guy_38 Registered User Join Date: Jul 2007 Location: Ontario Canada Posts: 1,006	Re: How to hook up HEI whats a better box msd 6al or crane 6000-6440 ?



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