Bat66

I was told by an AC Delco retailer that the ac delco spark plugs (41-985) which is what the manual call for has been discontinued, so what replacement sparks are you all using now.
Bat

cclive

They show in stock on WalMart's website...check that out. $6.97 each. Amazon shows out but also says they don't fit my '07 Vert. They show 41-110 for mine.

simplegto

I think they found that .040 gap works better than .060. I like
NGK (7397) (7397) Iridium IX Spark Plugs but the AC purest will flame that so buy what you want. Amazon has a good parts checker just put your info in they will tell you if it fits.
Another thing is now the plugs last longer than the wires so have a plan if you start and the wires give up.

irok

just purchase the GM Irridium replacement plugs.they work on all GM LS engines excluding supercharged applications

hisvett

How often are you changing plugs?

Ben101er

I could be mistaken, but I believe that they are good for 100K.

Dano523

Yep, less than 100K on the spark plugs, pull them, clean them, set the gap to .040", put some antiseeze on the plug threads so they are easy to pull later, then put them back in the car to 11ftlbs torque.
Note, do not remove or install the sparks plugs unless the motor is room temp cold!!!!!!

As for plug wires, dielectric grease on the inside of the boots both sides, and they will snap into place cleanly every time: hence you don't have to worry about the wires coming unplugged to case misfires down the road.

hisvett

That's what I thought; I've never owned one Vette long enough to put 100K miles on it.

GhostC6

I was also wondering what is the best plug to use for performance and what gap they should be. Anyone want to chime in on what I should get and the gap?

Also, what is a good multi purpose anti seize to use? Thanks to all for your knowledge and wisdom.

OH, sorry, running a NA LS2..
Please include the part number, thanks.

billyboy47

Really? I was going to buy a set of Z06 wheels for my car and amazon told me that they would fit. I decided to call the manufacturer, O.E. Wheels distributor and was told they would not fit my vehicle. Be careful when ordering certain parts from amazon.

GhostC6

Before I buy a part anywhere I look it up at like autozone or advance or GM and get the part numbers and then search eBay and Amazon and places for the part number not what some thing says will or will not work. I have fount as in his case, many things they saw will fit will not and many more things they say will not fit will actually fit.

Better yet, go to NGK, find your part number and then search for that.

When you say what does that mean? They will catch on fire? They will burn the wires?

simplegto

Never had a problem and have bought hoses, belts, brakes, plugs and everything I have needed.

edcologne

maybe there is some helpful information here:

https://www.corvetteforum.com/forums...s-of-pics.html

https://www.corvetteforum.com/forums...oval-help.html

https://www.corvetteforum.com/forums...procedure.html

https://www.corvetteforum.com/forums...-few-tips.html

https://www.corvetteforum.com/forums...ent-notes.html

simplegto

The owners manual thumpers that only use OEM parts have a way of piling on when you stray from their point of view.

Dano523

Plug number is AC/Delco 41-110, and gaped to .040" (will need 8 of them).
And again, motor room temp dead cold, and the plugs only torqued to 11ftlbs.


As for anti-seize grease for the plug threads, the peramtex is fine,


As for dielectric grease, CRC if fine.


As for other things that come in handly, can of electrical cleaner to pull the coil connectors and clean, then dielectric grease them when you have the fuel rail covers off,


And a fuel rail tool to disconnect the braid fuel line from the firewall hard pipe so you can slip the cover past the line, instead of chancing cracking the cover by trying to bend the slot to pull the fuel hose through that way instead on a cold cover.

GhostC6

Ah, I did not think about them. I guess my only thought on that is that the day and year their particular model was made, that part may have been the best but with time and advancements in things, they may not be the best for it right now.

Back in the day a wood spoke wheel with a steel outer band was the greatest thing, but I don't thing those would work or perform well on the modern day corvette.

I was looking for plugs on Ecklers and they offer a different plug for a C5 than a C6 and so on, I have asked them why but have not got a reply yet.

GhostC6

Awesome, thank you. I have all of that except for the plugs and the anti seize. As someone else mentioned I am going to get wires too just to avoid a problem.

GhostC6

I am seeing that the AC Delco 41-110 is replaced with the AC Delco 41-962, is that right or is one better than the other?

GhostC6

Also, Since I will be replacing the plugs and wires the only part that needs to be cleaned is the coil connection. Would you suggest any type of steel or brass brush or light sandpaper to clean the contacts, to brighten them up or just the CRC cleaner?

Don-Vette

I've never heard of a spark plug backing out. Either the threads are stripped or it wasn't tightened enough. I have heard of the boots slipping off. You need to make sure you hear the clicking sound when pushing on the boots.