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Spark plug wire lengths for 1967 390

Thread starter Likes2Laff
Start date Jun 29, 2021

Likes2Laff

I love the smell of unburnt hydrocarbons!

Bronze Member

Jun 29, 2021

I am having custom spark plug wires made for my 1967 Thunderbird with the 390. The company making them wants to know the length for each wire for each cylinder...I would be happy with whatever the original lengths were...the originals are no longer on the car and the current ones are obviously not correct.

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