LS1Maniac

I've got 33k miles on my '01 and I'm still on my stock plugs and wires. I installed my headers last summer so I don't know if that matters as far how much heat damage there might be with the stock plug wires. Anyways, the reason I ask this is because one of my friends told me that you need to replace your plugs and wires at least once a year. How much truth is there to this and should I go ahead and replace my plugs and wires?

RumbleLS1

I would say it definitly needs to be done. If you still have your car manual it would tell you when it needs to be done. I know that plug wires need to be changed every 30,000 miles. Plugs might be sooner.

35thls1ss19

iTrader: (1)

i am doing my headers tonite and i am putting in new plugs while i am in there, my car only has 13k on it. It sure cant hurt thats for sure

P Mack

iTrader: (6)

I'm still on my original plug wires after 96k miles. Wonder if i will see a difference from changing them?

Viper

iTrader: (6)

P Mack

I predict you'll like notice and like the change.

I change my plugs ( headers with H/C ) every 5-7K.

3rd set of wires on the car after 50K.

2001CamaroGuy

iTrader: (6)

stock plugs/wires = as soon as you drive it off the lot

platinum plugs suck! get some good coppers and replace them every 10-15K

The stock wires are not very good either. I replaced my stockers with MSDs and with only 10K miles on them, the stockers Ohmed out to 8 times the resistance. Get some MSDs, Ohm them new (write this down somewhere), and then whenever you change plugs (again....every 10-15K) just recheck them to make sure they are not going out. If you start to notice a real change in resistance it's time to swap.

MSD wires and NGK Copper plugs

MARKSZ71

iTrader: (3)

i got a buddy that has 50,000 on his ss and races it every weekend car has slowed down none with stock wires and plugs

john shea

53 k on my 99 formula race every weekend. avg 13.30 on original plugs and
wires.

LS1LT1

iTrader: (16)

I would change factory platinum plugs after 20k-25k miles just to get some decent use out of them before throwing them away...once you switch to NGK TR55s (which are better performing but generally will not last even as long stock platinums) I would switch those every 10k-20k max depending on how your car is running (rich lean).
Talking mostly NA cars here, nitrous/FI cars may differ.
Wire can stay in a little longer still but even when switching them out I would still stay with factory OEM wires, I've just heard too many 'hit or miss' stories involving Taylor or MSD aftermarket ones.