Does a 2002 LS430 have cam chain?

The 2002 LS430 does not have a cam chain. Instead, it uses a timing belt. Timing belts are made of a reinforced rubber material and are designed to last for a specific number of miles or years, whichever comes first. The timing belt in the 2002 LS430 should be replaced every 90,000 miles or 10 years, whichever comes first.