View attachment 515312 View attachment 515317 The problem is definitely with the 5.7 Hemi. Nothing to do with overheating or anything else you can try to blame it on. Pure and simple, the valve seats don't have sufficient interference fit to hold them in tight. The seat problem always happens when just starting the car after being driven long enough to warm up. They don't admit any fault but they made changes to the heads in 08. I am part of a class action suit for this. Mine happened after coming out of the Dr. office from an appointment. Turned key, car started, immediately sounded like loose nuts and bolts in an old metal coffee can. No overheating, no high rpms, no warning. 2006 Dodge Magnum R/T 5.7. Last October with 80,000 miles. Nothing but 5w20 Mobil one. Took to dealer and they said it was not a common problem. I asked how much for new heads, they gave me a price but said they were on Back order. Hmm......I actually expected it and was shopping for replacement heads when it happened. I had just hoped for it to go at least 100K. I have looked on many sites on line that are similar to FBBO in that they are owners of 5.7 powered cars. Common on all sites. I waited for my tax return and got a new/remanufactured replacement engine. Came with New, upgraded cylinder heads, upgraded timing set and oil pump as these have also been a problem of the 2003-2008 5.7. Cost $2600 for the engine including shipping the old engine back for a core credit.
I love my Magnum, good power, decent mileage with the MDS system. Just know that you will need to replace the heads before they take out the cylinder heads, pistons and possible block. They started production of the 5.7 Hemi in 2003 and it was originally an option on the Ram 1500.
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