Did I buy the wrong thing for my 72? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

YellowMenace · 07-24-2004, 11:59 PM

I bought a HEI ignition on e-bay:

click here to see it

and I had read about the one wire hookup and seen the vacuum advance stuff. This think has a bunch of wires coming out of it and no vacuum connection. Did I screw up?

fast71 · 07-25-2004, 12:19 AM

yes you did !!! you need 1975 thru 1981

YellowMenace · 07-25-2004, 12:34 AM

I had a sinking feeling when I looked closely at it. I'm new to this chevy stuff. I guess it isn't salvagable with something like a MSD 6A or such is it? Better to just find another one?

toddtheodd · 07-25-2004, 01:06 AM

Ok, so maybe I'm stupid, but it looks just like all the other HEI's I've ever seen.
Don't those wires just plug into each other? (see the circles connected by the line) I seem to remember some wires plugging into each other that were part of the HEI setup.
And the "one wire" just plugs into where the arrow points.
Todd

YellowMenace · 07-25-2004, 01:14 AM

Quote:

Originally Posted by toddtheodd

Ok, so maybe I'm stupid, but it looks just like all the other HEI's I've ever seen.
Don't those wires just plug into each other? (see the circles connected by the line) I seem to remember some wires plugging into each other that were part of the HEI setup.
And the "one wire" just plugs into where the arrow points.
Todd

That's what I thought until I got my hands on it. The plugs are completely different. I then jumped to the conclusion that this must be a newer version that's computer controlled ( I think I jumped correctly now). There are a few lugs where the arrow points and it appears that's at least the tach connection.

I may have access to a MSD 6A and that's why I wondered if this thing could serve as the distributor and coil for it.

chevymad · 07-25-2004, 02:21 AM

One of the plugs goes into the cap, along with the one wire for power supply. The 4 wire plug is the computers timing control. Without a computer theres no advance on that distributor. MSD6a does not create advance either.

krue · 07-25-2004, 03:18 AM

Are the distibutor bodies the same? I gotta vacuum advance off an HEI laying around here someplace if he could use it he can have it for the postage. That's assuming my kids haven't destoyed or lost it by now.

YellowMenace · 07-25-2004, 08:51 AM

Quote:

Originally Posted by krue

Are the distibutor bodies the same? I gotta vacuum advance off an HEI laying around here someplace if he could use it he can have it for the postage. That's assuming my kids haven't destoyed or lost it by now.

That would be great if it would work.

Anyone know the answer? Anyone?....Beuller?

boraxman · 07-25-2004, 11:26 AM

If it doesnt work just slam it back on the Bay.

**smitty62** · 07-25-2004, 12:54 PM

You could change module and add advance, but I think it would be simpler just to put it back on Ebay and buy the correct one--they are not hard to find.

**smitty62** · 07-25-2004, 01:45 PM

Sent you a PM

cableguy0 · 07-25-2004, 03:32 PM

im sure you could trade that one off or sell it and get the older version hei that you need

chevymad · 07-25-2004, 04:01 PM

That one doesnt have mechanical advance either. So you'd have to change the distributor shaft as well. Best bet is to resell and get the right one.

07-24-2004, 11:59 PM	#1
YellowMenace Registered User Join Date: Jul 2004 Location: Katy, TX (Houston) Posts: 73	Did I buy the wrong thing for my 72? I bought a HEI ignition on e-bay: click here to see it and I had read about the one wire hookup and seen the vacuum advance stuff. This think has a bunch of wires coming out of it and no vacuum connection. Did I screw up?

07-25-2004, 12:19 AM	#2
fast71 Drive it like U stole it Join Date: Mar 2000 Location: tunnel hill ,GA /Chatt,TN Posts: 956	yes you did !!! you need 1975 thru 1981 __________________ 71 custom 10 swb 72 nova ss 72 nova custom 87 s10 96 burb 94 camry 53 5 window 3100

07-25-2004, 01:06 AM	#4
toddtheodd The oddest Todd around Join Date: May 2004 Location: Miami, Florida Posts: 1,418	Ok, so maybe I'm stupid, but it looks just like all the other HEI's I've ever seen. Don't those wires just plug into each other? (see the circles connected by the line) I seem to remember some wires plugging into each other that were part of the HEI setup. And the "one wire" just plugs into where the arrow points. Todd Attached Images

07-25-2004, 03:18 AM	#7
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	Are the distibutor bodies the same? I gotta vacuum advance off an HEI laying around here someplace if he could use it he can have it for the postage. That's assuming my kids haven't destoyed or lost it by now. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

07-25-2004, 11:26 AM	#9
boraxman Keepin an eye out Join Date: Feb 2003 Location: So.Cal Posts: 3,920	If it doesnt work just slam it back on the Bay. __________________ 1970 Chevy C10 SWB 5.3 1996 Toyota Tacoma SR5 4x4 2007 Vespa GTS 250 Scooter ZIP 91351

07-25-2004, 12:34 AM	#3
YellowMenace Registered User Join Date: Jul 2004 Location: Katy, TX (Houston) Posts: 73	I had a sinking feeling when I looked closely at it. I'm new to this chevy stuff. I guess it isn't salvagable with something like a MSD 6A or such is it? Better to just find another one?

07-25-2004, 02:21 AM	#6
chevymad Registered User Join Date: Jan 2001 Location: skamokawa, WA, USA Posts: 527	One of the plugs goes into the cap, along with the one wire for power supply. The 4 wire plug is the computers timing control. Without a computer theres no advance on that distributor. MSD6a does not create advance either.

07-25-2004, 12:54 PM	#10
smitty62 Registered User Join Date: May 2002 Location: North Carolina Posts: 1,234	You could change module and add advance, but I think it would be simpler just to put it back on Ebay and buy the correct one--they are not hard to find. __________________ Stepsides look like real trucks! Smitty

07-25-2004, 01:45 PM	#11
smitty62 Registered User Join Date: May 2002 Location: North Carolina Posts: 1,234	Sent you a PM __________________ Stepsides look like real trucks! Smitty

07-25-2004, 03:32 PM	#12
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	im sure you could trade that one off or sell it and get the older version hei that you need __________________ 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.

07-25-2004, 04:01 PM	#13
chevymad Registered User Join Date: Jan 2001 Location: skamokawa, WA, USA Posts: 527	That one doesnt have mechanical advance either. So you'd have to change the distributor shaft as well. Best bet is to resell and get the right one.



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