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Expert: sprinkles08 replied 4 years ago. Hello and welcome to JustAnswer! Yes, the 3.3 and 3.8 are interference engines. They have a timing chain instead of a timing belt though, I've never seen or heard of a timing chain breaking on a 3.3/3.8 and causing any valve damage.sprinkles08, Chrysler/Dodge/Jeep master tech.Category: Dodge.xpert: sprinkles08 replied 4 years ago. Hello and welcome to JustAnswer! Yes, the 3.3 and 3.8 are interference engines. They have a timing chain instead of a timing belt though, I've never seen or heard of a timing chain breaking on a 3.3/3.8 and causing any valve damage.
I have a 2000 Avalon. I checked up the website to see if it had an interferece engine..And the answer was all over the place! For starters, Gates says it is interference. However, it also says that the same 1mz-fe engine is non interferece on Camrys 1998-2004 but it is interferece on same year Soloras.ome say it becomes interference if it is VVTI. Then some Toyoya/Lexus techs say that is not true. And he further says he works on Lexus/Toyotas but has never seen any engine damaged from a breaking timing belt. If you google 1mz-fe interference  you will see what I mean.