HEI Plug Wire Resistance - The 1947 - Present Chevrolet & GMC Truck Message Board Network

stllookn · 05-08-2003, 11:51 AM

What should the resistance be on the HEI plug wires? I have three that are from a different manufacturer but if the resistance is ok, I guess I will just use them until I find a nice, reasonably priced set of new ones. Mine vary from 1500 ohms to 15,000 ohms...one measures 42,000 ohms! My son's HP MSD wires read about 186 ohms!

68speedalert · 05-08-2003, 01:30 PM

I would throw out the 46 kohm it if was me. If memory serves, about 5,000 per foot is the spec.

Steve

Blazer1970 · 05-08-2003, 01:43 PM

It depends on what kind of wires they are. The spiral core wires (like the MSDs) will have very low resistance.

stllookn · 05-08-2003, 08:25 PM

My son's new MSDs are about 186 ohms! I just won't pay $80 for wires! I am guessing I only need to buy one then...replace that 46,000 ohm wire. Hey if it works really well...I might just spring for some new wires but I don't want to replace what ain't broken!

jimfulco · 05-09-2003, 12:33 AM

Pep Boys has spiral-core plug wire sets for around $35.

05-08-2003, 11:51 AM	#1
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	HEI Plug Wire Resistance What should the resistance be on the HEI plug wires? I have three that are from a different manufacturer but if the resistance is ok, I guess I will just use them until I find a nice, reasonably priced set of new ones. Mine vary from 1500 ohms to 15,000 ohms...one measures 42,000 ohms! My son's HP MSD wires read about 186 ohms! __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary) Last edited by stllookn; 05-08-2003 at 08:26 PM.

05-08-2003, 01:30 PM	#2
68speedalert Semi-Senior Member Join Date: Feb 2003 Location: Washington, MO Posts: 390	I would throw out the 46 kohm it if was me. If memory serves, about 5,000 per foot is the spec. Steve __________________ '68 50th Anniversery LWB Custom Fleetside, '77 305 v-8, turbo 350, factory speed alert (still works), '71 drivetrain w/front discs. Some call it ugly yellow, others call it Ochre '83 Jeep CJ-7, <80,000 miles, original owner '04 Chevy Suburban, 4x4, 2500, 6.0 ltr, Predator Diablo programmer '95 GMC K1500 Extended cab

05-08-2003, 01:43 PM	#3
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,507	It depends on what kind of wires they are. The spiral core wires (like the MSDs) will have very low resistance. __________________ Tim

05-08-2003, 08:25 PM	#4
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	My son's new MSDs are about 186 ohms! I just won't pay $80 for wires! I am guessing I only need to buy one then...replace that 46,000 ohm wire. Hey if it works really well...I might just spring for some new wires but I don't want to replace what ain't broken! __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary)

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05-09-2003, 12:33 AM	#5
jimfulco Registered User Join Date: May 2003 Location: Shreveport LA Posts: 3,170	Pep Boys has spiral-core plug wire sets for around $35.



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