After searching this question on a few occasions, I've yet to come up with a difinitive answer...does the 5.7L hemi engine have a timing chain or belt?
the 5.7 and 6.1 have chains you can see them in just about any cam install thread
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To my knowledge you'll never see a cam-in-block engine with a belt.
Only overhead cam motors have this luxury, and my last toy (1970 240Z) had a chain. A very LLLLOOOONGGGG chain!
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Even some overhead cam engines have chains, some tend to have belt due to the cost factor and leave the additional maintenance to the customer. Besides how many new car drivers hit the 80k mile mark before having to change it? Not many I believe.
But the Mercedes, 112, 113, 272, 273, 276 and 278 engines have chains. Not to mention the AMG engines 156.
Chain is better in my opinion.
The Dodge 4.7L OHV engines are chain driven.
when should you change it?
^^X2^^ I'm at 100,000 miles, and don't want it breaking and destroying my engine like my turbo VW did!
Also, you'd be surprised to know that MOST engines these days are OHC (either SOHC or DOHC) and MOST use chains. How do I know? I work for one of the largest automotive chain manufacturers in the world.
Lastly, belts need a dry environment (although some are experimenting with wet belts) - so the belt environment needs to be isolated from engine oil, and belts durability is ~80,000 miles. Today's chains are built for the life of the engine: ~200,000 miles.
Last edited by protouringcuda; 02-25-2015 at 10:50 PM.
I have 344,000 on my dodge 4.7L and I've done nothing but used good synthetic oil.
My brother has a '99 Dakota with the old 5.2L that just passed 500K miles. Chain has not been touched.
Some will recommend changing the tensioner out as that has wear items, but likely you'll have another vehicle before you ever have chain issues.
Oh, 150K+ on my Hemi.
Use a good oil, you won't have any chain issues nor will it need replacement.