The answer to the question about how long timing chains last and whether they need to be replaced has two possible answers. It all depends on your answer to this question: Do you maintain your car ...

So the work continues. First to come off was the airbox and throttle body.Throttle body is surprisingly clean; the 390's had ...

Check if yours has a timing belt, chain, or neither: If your Toyota is belt-driven, keep in mind that these timing belts have a replacement interval of 90,000 or 100,000 miles. Chart source ...