My general rule of thumb has always been in my family, 100k, install a new time chain set with an upgraded double roller or if feeling frisky a gear drive. Something I have done as long as I recall, but I do have a bad habit of hard driving. I have not messed with anything newer than a '94 Ford, and it has always been a rule of thumb for me.
My stepdad was a Ford Mechanic for a long time, and when ever he has an engine torn down far enough, he'll insect the chain. All it takes is a stretched chain and a dropped valve to ruin your day...
Thanks alot for the advice, I appreciate it.
