i have noticed a little mpg with the same swap at 66k miles. plugs weren't badly worn, and the wires were in good condition. msd wires look purty though. the red has got to be worth 10 hp.

 

if i was deciding to change my wires and stuff which ones should i get brand a mm and specifications like that? its been a mod i have been thinkin about

 

I just changed my plugs and wires on my 2000, stock delco wires for $10 bucks on ebay if you look around you can find them they are take offs but brand new.

Went with NGK 55's since I had a spare set sitting around for my camaro. Did not intend to change them but the upper contact point on two of my electrodes were missing so the gap was longer.

TAKE A LOOK AT YOURS to make sure the upper contact point is intact. My truck is a 2000 with only 64K.

Truck does seem to rev a little faster, smoother and respond better. Gapped them at 52 to tighten up the spark a bit. As for mileage to soon to tell I did it yesterday.

Will post back if there is a gain.

 

Hey im runnin NGK 55's... With 8.5 MSD wires.. But then again I have 80k on my truck... Those work great with a 75 or 100 shout of NOS..

 

Where is the best place to get the Oem Delco Wires?

 

autoparts store...

 

I run NGK TR^'s and 8.8mm Taylor thundervolt wires... I like them... mine seemed to idle a little smoother when I changed them. the old ones were worn though.

 

If u have the 100,000 mile plugs....those are platinum plugs stock! Sooo NGKs are worthless....there the same plug...some even have delco on one side and ngk on other....

Wires are always best bet to get full benefit out of any plug.

 

I posted this on another thread about a month ago:

I changed my plugs from the NGK TR-55 (copper) to the AC Delco 41-985. Truck idles and runs noticeably better. Here is what I have learned about spark plugs in our NA motors recently:

1. According to a dealer technician: OEM plugs have been made by NGK (.060 gap, this is the one that says AC and NGK on it), Denso (? gap) and AC Delco branded only (.040 gap). Which plugs your truck originally came with depends upon when it was made.

2. The current correct OEM plug is the AC Delco Iridium 41-985 for all V8s (4.8, 5.3 & 6.0) gapped at .040. I kind of doubt that this one is made by NGK because their iridium plug is supposed to be gapped at .060.

3. A copper plug (and many other brand platinums according to an expert) will not perform properly and should not be substituted for any of our OEM platinum and iridium plugs.

4. Plug construction is also a factor in determining proper gap.

5. Platinum and Iridium plugs should NEVER be regapped because there is only a small deposit of the rare metals on the electrode and it can be easily be damaged or rubbed off.

I learned this through painstaking research over the last few weeks, I hope it helps anyone interested. Obviously people running nitrous or FI have other issues to consider in determining which plug to use, for the rest of us I wouldn't consider using anything other than the AC Delco 41-985 or the NGK PZTR5A-15.

 

I would also agree about the OEM wires. They look like very high quality wires and a fresh set of those would probably be as good as or even better than a lot of aftermarket sets.