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    6.4 Cooler thermostat

    I have seen a few posts about getting a 6.4 to run cooler so here goes. I have a 2015 that I bought with a bad 6.4. I installed a SRT8 6.4, did MDS, EGR delete and installed long tube headers. The engine and oil temps always bugged me and I had to pull a bunch of timing because of spark knock. A...
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