100,000 tasks?
 

Our 08 SS will hit 100,000 miles this year. Any maintenance tasks we should perform to insure a long life?

Spark plugs, timing chain , water pump, and balance shaft chain. LCA rear bushings

Link in my sig to FREE owner manuals. All of that info is therein contained.

Be on the hunt for the correct OEM struts. (Discontinued.) Change the transmission oil or fluid.

I have at least one of every part necessary to rebuild the front end, two of many. Brand new struts and control arms included along with the parts needed to rebuild the take out control arms. I have the owners manual and it's list, and I've seen comments that replacing the plugs may not be necessary. It sure seems to have plenty of power. So I just wondered what the group mind might say?

The book says 100,000 miles on ACDelco 42-103. There are thousands on the road that have never been changed. I went 150,000 and they looked good to my eye and no loss of MPG (my usual indicator).

Still, you should take them out and have a look at their condition. It'll also break the bond that's been forming with the threads in the head. Otherwise it'll be harder to get them out later. But you'll have to deal with those impossible-to-find airbox insolators.

But some of the parts that folks back east have to replace often, have a much longer life out here in the wild west.

You asked, I suggested. It’s your decision whether you want our advice or you heard someone. Those AC Delco plugs are 41-108.

Wow! You're on top of it! You should be giving advice, not asking for it.

The front timing guide can shatter without warning, with various possible consequences:
- Not much. Pieces find harmless new homes, and the event is barely noticed.
- The chain jumps a tooth, setting the MIL w/ P0016/17.
- Chain jumps one or two more teeth, valves bend, compress vanishes, engine quits.
- Engine quits, attempts to start result in further mis-timing, breaking valves. Carnage ensues.
- A chunk jams the chain, causing immediate gross loss of timing or even breaking the chain. Carnage ensues.
- Chunks jam balance chain. Water pump quits. Rapid overheating brings possible well-known consequences.
- Tiny chunk blocks oil pressure relief valve open, Low oil pressure. No need to discuss. (Not so sure about this one.)

I'm sold on the ZZP upgraded front guide. It is possible to retrofit it without taking the valve cover off, but if the chains have never been done, just incorporate it into the chain job.

I think maybe I would insist upon the EOM timing tensioner. I have one. It seems different than at least some of the aftermarket versions. Once activated, I can't reset it without disassembly. The aftermarket, I can. Trying to figure this out.

Tensioner failure may be a contributing cause of most front guide breakage (in addition to cheapie design that skips on low-grade plastic.)