Plug wire color

[runner74]

Hello

Could anyone confirm factory spark plug wires color for 74 Roadrunner 400?

I like the Mopar orange but was wondering what 74 came with originally?

 

[RJS]

Starting in 1972 the 400 engine got Electronic Ignition and Orange wires, your 74 will have the same.
Ron

 

[runner74]

Thanks Ron

 

[Nacho-RT74]

PN 3744973 I think superseded to 3838000 shows orange wires ( there is a set on ebay right now ).
I got a NOS set of these just with one purpouse, get them measured to request same lenght to custom wires set ( firecore250 ). Because these wires are longer on 73 and lates big blocks than earliers. Once these were made, installed on my car ( also 400 ) and fit perfect on stock locations and brackets ( just enlarging a bit the brackets for 8 mm, stock are 7 mm ).

I'm pretty sure have these lenghts saved somewhere, on an email to custom wire sets. If you want though

 

[runner74]

Thank you so much Nacho-RT74 (Your mailbox is full so posted here)

This will save me a headache.

When I first bought this car I had ordered some big block mopar orange wires and they were definitely to short #7 and 8 especially. I can see why from your 55-3/4 and 56-1/2" measurements.

Again I thank you. I'll definitely order per your above.

Thanks Runner 74

 

[Nacho-RT74]

Note, firecore250 wires are black, not orange.

 

[ODZKing]

74 wires are Orange. The original # Nacho posted is correct, supersedes to 4339405. What is listed in the older catalog if you have seen an older one is incorrect. The wires are too short, I know I tried them on my 73 - 400.
I contacted Mopar Performance and they said that for a 1972 or later, use OEM Mopar 4339405. Available at your dealer and the price is quite reasonable.
Or MoparPartsAmerica.com for $59.59 if your dealer won't order them.
http://www.moparpartsamerica.com/pa...&make=Dodge&action=oePartSearch&siteid=214583
or Roseville ... but be SURE you get the correct ones, not the ones listed on their website.
http://www.rosevillemoparts.com