Question about putting on long tubes on my 2014 Silverado

[That.Chevy.Guy]

I'm getting speed engineering long tube headers for my truck and was thinking, do I need to get some new spark plug wires or should my factory ones be fine? And if I do should I get 10" or 12" wires. 

[scrapen]

I left factory wires on, but my truck only had 9k on it last year when I installed the headers.

Depending on miles on your truck it may be worth doing them while you’re in there. I bought 12” wires to get free shipping but just decided I’ll wait until I do plugs.


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[That.Chevy.Guy]

3 minutes ago, scrapen said:

I left factory wires on, but my truck only had 9k on it last year when I installed the headers.

Depending on miles on your truck it may be worth doing them while you’re in there. I bought 12” wires to get free shipping but just decided I’ll wait until I do plugs.


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How did the 12" fit Good? I got over 150km on my truck so I'm probably going to need it

[SlowGMC]

You will need new spark plug wire from what I've read. Atleast on my 2018  I needed new ones because stock wires would touch my speed engineering headers. I got Taylor wires with 90 degree boot and they clear perfectly. Link here

https://www.summitracing.com/parts/tay-79613

[14 gmcl83]

I did the same header still have stock wires no issues either.

[JONBLARC7]

Just did this last weekend on my 2014 L86 and I left the stock wires.  They don't hit anywhere.