I'm running the plain old delco wires, with the 99 cent delco copper core plugs, with the delco cap and rotor. Its all been on there about 2 years now and it runs as smooth as ever. Unless I had some kind of drag strip supercharged monster that stuck out of my hood, I wouldn't even look at aftermarket ignition.
From experience and in speaking with GM mechanics, I believe their are benefits from a better set of wires and this benefit only increases as the mods pile on. I do however recommend sticking with the stock plugs. They are designed for our engines (vortec) and do a fine job. As mentioned before, unless you have a blown application, I would not go through the trouble of changing plugs. and anybody who has changed plugs before on our trucks know how much of a bitch those 2 up against the firewall can be.... :crazy:
replaced the plugs with stock, wires with accel, cleaned the K+N
she is running much better now, it was extremely ruff yesterday, and i felt a loss of power, after that changing that stuff it is running better than ever
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