In an S197 (4.6L) that isn't beat on, has oil changed every 5K miles with full synthetic oil, how long should the timing chain last before it should be replaced?

 

forever i think
bikes have chains..never needed to change one in my life..has to be better idea that cambelts..had a few of those snap in my time

 

It's not the chain that is usually a problem, it's the chain guides. They are typically covered in Nylon (delrin) or made entirely out of nylon to reduce noise/chatter and keep the chains 'on track' when the nylon wears out, you get more noise and eventually the chain will jump a tooth...or two from slack.

If you change your oil regularly you should be fine for the life of the engine on the chain guides and chain.

http://www.shopfreedomracing.com/46L...Z-6M256-CC.htm

 

There is no expected service life attached to Ford OHC timing chains, they get replaced when they start making noise.

 

So when you eventually get the bug and start rebuilding your engine with forged internals, might as well replace the chain guides and chain.

 

When you decide to take the plunge I strongly recommend you look into the FRPP 4.6L 3V Camshaft Drive Kit. It has everything you need (including new phaser and bolts) and is available for much cheaper than buying the individual parts, just shop around for best price.

 

Yes, that is the best complete kit.

 

I'm not having any TC problems, I was just wondering how long they last. Out of curiosity, how much does that kit run?

 

That kit is around $290