3DTIM

iTrader: (5)

So what's the best plug wires for the these trucks? 2002 5.3 Headers

GMCtrk

iTrader: (27)

Stock or MSD wires work equally well. MSD's are nice if you're running headers since you can bend the boot away from the primaries.

03chevyroyce

iTrader: (2)

stock IMO

dirt track racer 81

iTrader: (45)

im still rockin the stockers..actually i have 06 gto wires that are red and 90 degree boots..25 bucks on ebay

03chevyroyce

iTrader: (2)

i put a set of delcs on when i did the headers

EVILGMC

iTrader: (47)

stock. hated the msd wired. broken clip after just a few removals.

i am running taylor 10.4s becuase i got them for free...haha

Black'Rado

iTrader: (8)

runnin msds....noticed a better idle after putting them on and when i get headers i can keep em off the primarys

oldred95

I would only go with Super Conductors. Summit has their house brand version of MSD Super Conductors and of course MSD has theirs for a little more and red wires with gray boots. I will only go with super conductors from this point out because they are 40-50 ohms a foot vs 1000+ ohms a foot stock style wires are. In the big scheme of things it probably doesn't make all that much difference but I have this undeniable hate for resistance.

Coban

iTrader: (14)

Stock. You won't feel any difference with aftermarket. Even the idle will be the same.

Only use aftermarket if you need to get them off headers like previously stated.

BuyAmericanIron

GMCtrk and Coban said it best. I used MSD with bendable ends to get them away from the headers. Have had no problems. Had I not installed headers, I would be running OE wires.