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Spark Plug Wires for 428 PI

Started by laforum, December 09, 2021, 06:16:41 PM

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laforum

What are the correct spark plug wires for a Cobra with a 428 PI engine?  Have they been reproduced?

TLea



TLea

I am not 100% sure on this but I would think they would be the fomoco wires  the same as the 7 L Galaxie used.  They are reproduced

Special Ed

Werent the plug wires longer when the taller pentroof valve covers were used on cobras?

shelbydoug

Same wires as on a '67 GT500. Same engine as CSX3200's.
68 GT350 Lives Matter!

430dragpack

#6
Quote from: shelbydoug on December 12, 2021, 08:15:18 AM
Same wires as on a '67 GT500. Same engine as CSX3200's.

Did all the 67 GT 500 wire sets have orange boots and '66 and earlier engines use black boots?  Length might be the same since the Cobra and GT 500 had tall covers like Ed said.  Probably "SX" marked steel core performance wire, for the Cobra.

Bob Gaines

#7
Quote from: 430dragpack on December 12, 2021, 10:41:51 AM
Quote from: shelbydoug on December 12, 2021, 08:15:18 AM
Same wires as on a '67 GT500. Same engine as CSX3200's.

Did all the 67 GT 500 wire sets have orange boots and '66 and earlier engines use black boots?  Length might be the same since the Cobra and GT 500 had tall covers like Ed said.  Probably "SX" marked steel core performance wire.
I have seen some 67's with mixed black and orange. 67 GT500 used radio resistance .
Bob Gaines,Shelby Enthusiast, Shelby Collector , Shelby Concours judge SAAC,MCA,Mid America Shelby

430dragpack

Quote from: Bob Gaines on December 12, 2021, 11:30:35 AM
Quote from: 430dragpack on December 12, 2021, 10:41:51 AM
Quote from: shelbydoug on December 12, 2021, 08:15:18 AM
Same wires as on a '67 GT500. Same engine as CSX3200's.

Did all the 67 GT 500 wire sets have orange boots and '66 and earlier engines use black boots?  Length might be the same since the Cobra and GT 500 had tall covers like Ed said.  Probably "SX" marked steel core performance wire.
I have seen some 67's with mixed black and orange. 67 GT500 used radio resistance .

Bob, when you say "mixed" do you mean one engine could've had some orange and black boots or some engines had all black and the next engine had all orange, until a supply was used up. Did the GT500 wires also have Autolite and date code along with the Radio Resistance?

Bob Gaines

Quote from: 430dragpack on December 12, 2021, 11:41:38 AM
Quote from: Bob Gaines on December 12, 2021, 11:30:35 AM
Quote from: 430dragpack on December 12, 2021, 10:41:51 AM
Quote from: shelbydoug on December 12, 2021, 08:15:18 AM
Same wires as on a '67 GT500. Same engine as CSX3200's.

Did all the 67 GT 500 wire sets have orange boots and '66 and earlier engines use black boots?  Length might be the same since the Cobra and GT 500 had tall covers like Ed said.  Probably "SX" marked steel core performance wire.
I have seen some 67's with mixed black and orange. 67 GT500 used radio resistance .

Bob, when you say "mixed" do you mean one engine could've had some orange and black boots or some engines had all black and the next engine had all orange, until a supply was used up. Did the GT500 wires also have Autolite and date code along with the Radio Resistance?
Early could have all black and later could have all orange . I don't know if the mixed was the change over (probably) or not . The change over to the dated wires happened early in 67 production .
Bob Gaines,Shelby Enthusiast, Shelby Collector , Shelby Concours judge SAAC,MCA,Mid America Shelby

430dragpack

Did Ford service, Autolite replacement wire sets, let's say from 1967-1970, have date codes on them like assembly line wires? 

Bob Gaines

Quote from: 430dragpack on December 12, 2021, 12:07:37 PM
Did Ford service, Autolite replacement wire sets, let's say from 1967-1970, have date codes on them like assembly line wires?
Yes . Some of the service wires that I have seen had different color letters too.
Bob Gaines,Shelby Enthusiast, Shelby Collector , Shelby Concours judge SAAC,MCA,Mid America Shelby

TLea

Quote from: Special Ed on December 11, 2021, 05:28:39 PM
Werent the plug wires longer when the taller pentroof valve covers were used on cobras?
My 65 R code has pentroof covers and have std FoMoCo SX wires

shelbydoug

#13
The reproduction wires that I have for my '67 GT500 are from SEMO Mustang. They clear over the the tops of the COBRA Lemans cast covers with no issues.

I believe that it is Marti that has them made?

They come with orange plug boots. They are radio suppression.

The chrome pent roof covers are less bulky so they are plenty long enough for that application.
68 GT350 Lives Matter!

TLea

67 would be Autolite correct? I'm thinking 66 is Fomoco