spark plug and header question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**michael bustamante** · 11-01-2016, 06:57 PM

03 yukon 5.3
im going to run headers and im reading that ill need to run msd wires?
how come i would have to change to the msd? they look the same to me and does anyone have any for sale?

Willie Makeit · 11-01-2016, 07:17 PM

stock GM / AC Delco wires with Doug Thorley Tri-Y's. Works perfectly.

BR3W CITY · 11-01-2016, 08:53 PM

Some header combo's need the extended plug ends, or the angled ends. It depends on the header, and the size of the primary.

I switched to MSD's because a) they are a nice wire and b) the "multi-angle" boots will fit pretty much any combo.

**michael bustamante** · 11-02-2016, 12:49 PM

ohh. i cant afford those nice doug thorleys
i was thinking about the nice ones on e bay. speed....something

knomadd · 11-02-2016, 04:13 PM

I've seen MSD wires recommended because the factory wire boots can sit on the header tubes on some headers. The MSD wires, like BR3W mentioned are adjustable to bend the boot to fit your application.

You could always go another route. I bought the Accel Extreme 9000 Ceramic boot plug wires with 45 degree boots. They're spendy, but after having burned two plug wires on my old SBC, I wasn't going to deal with it again. Had them on the SBC and they worked great.

**michael bustamante** · 11-02-2016, 06:34 PM

cool. thanks guys

BR3W CITY · 11-02-2016, 09:11 PM

Quote:

Originally Posted by knomadd

I've seen MSD wires recommended because the factory wire boots can sit on the header tubes on some headers. The MSD wires, like BR3W mentioned are adjustable to bend the boot to fit your application.

You could always go another route. I bought the Accel Extreme 9000 Ceramic boot plug wires with 45 degree boots. They're spendy, but after having burned two plug wires on my old SBC, I wasn't going to deal with it again. Had them on the SBC and they worked great.

Buy Nomex fire-socks for the plug boots.

**michael bustamante** · 11-03-2016, 04:57 PM

i have never seen those before... ill look into them

knomadd · 11-03-2016, 05:03 PM

Quote:

Originally Posted by BR3W CITY

Buy Nomex fire-socks for the plug boots.

Be careful if you look into these. There are many manufacturers, but most of them (if not all of them) will not fit 90 degree plug boots. I have a set of these that wouldn't fit my wires, so I went the ceramic boot route. If you aren't running 90 degree plug boots, you should be fine with them.

11-01-2016, 06:57 PM	#1
michael bustamante Senior Member Join Date: Sep 2007 Location: Albuquerque NM Posts: 7,862	spark plug and header question 03 yukon 5.3 im going to run headers and im reading that ill need to run msd wires? how come i would have to change to the msd? they look the same to me and does anyone have any for sale? __________________ 1967custom

11-01-2016, 07:17 PM	#2
Willie Makeit Registered User Join Date: Oct 2013 Location: Alabama Posts: 1,234	Re: spark plug and header question stock GM / AC Delco wires with Doug Thorley Tri-Y's. Works perfectly.

11-01-2016, 08:53 PM	#3
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: spark plug and header question Some header combo's need the extended plug ends, or the angled ends. It depends on the header, and the size of the primary. I switched to MSD's because a) they are a nice wire and b) the "multi-angle" boots will fit pretty much any combo. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

11-02-2016, 12:49 PM	#4
michael bustamante Senior Member Join Date: Sep 2007 Location: Albuquerque NM Posts: 7,862	Re: spark plug and header question ohh. i cant afford those nice doug thorleys i was thinking about the nice ones on e bay. speed....something __________________ 1967custom Last edited by michael bustamante; 11-02-2016 at 01:23 PM.

11-02-2016, 04:13 PM	#5
knomadd Registered User Join Date: Jul 2012 Location: Rosenberg, Texas Posts: 3,506	Re: spark plug and header question I've seen MSD wires recommended because the factory wire boots can sit on the header tubes on some headers. The MSD wires, like BR3W mentioned are adjustable to bend the boot to fit your application. You could always go another route. I bought the Accel Extreme 9000 Ceramic boot plug wires with 45 degree boots. They're spendy, but after having burned two plug wires on my old SBC, I wasn't going to deal with it again. Had them on the SBC and they worked great. __________________ -Duane C/10 Club Texas member 1971 Chevy C10 "Brutus" SWB Fleetside 2016 6.0L (L96) 6L90E (driver/project) 1965 Pontiac GTO "Royal Goat" 400/TH400 w/AC (my baby)

11-02-2016, 06:34 PM	#6
michael bustamante Senior Member Join Date: Sep 2007 Location: Albuquerque NM Posts: 7,862	Re: spark plug and header question cool. thanks guys __________________ 1967custom

11-03-2016, 04:57 PM	#8
michael bustamante Senior Member Join Date: Sep 2007 Location: Albuquerque NM Posts: 7,862	Re: spark plug and header question i have never seen those before... ill look into them __________________ 1967custom



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