Hello everyone. I have a 2022 Chevy Tahoe LS, 4WD w/ 10 speed automatic. It has an L84 5.3L V8 with the dreaded DFM system. Have about 68,000 miles on her, so far running well. My question is this, which LS V8 in non AFM or DFM form will swap into my Tahoe and be compatible with the trans and electronics ? Is there a GM crate engine that would work ? I’m an old school GM guy (262-400 ci small block, 396 and up big blocks), so my familiarity with the modern offerings is limited by comparison. Just trying to plan for lifter issues down the road. I have researched the full DFM delete kits to convert my existing motor, but would like to know if there are other options.

For those interested. Adding head mounts to your setup helps reduce driveline movement under high torque applications as well as takes a lot of stress off your transmission bell housing. If the driveline of your build is in a tight space where you might worry about the driveline coming in contact with other components or if you’re looking to beef up your mounting points this is a fun option. My current driveline setup has 4 total points of mounting. Side engine, head mounts, top mounted th400 and top mounted transfer case. Everything will have poly bushing to help absorb the vibration and make it so it can move slightly but in general will be a more solid mount overall.