- Is the 6.4 liter Hemi a good engine?
- What engine is better 5.7 or 6.4 Hemi?
- What is the best year for the 5.7 Hemi?
- Is the 5.7 Hemi a reliable engine?
Overall, the FCA 6.4 HEMI is a solid, reliable engine. It’s certainly not the most reliable engine in the world, but it’s also far ahead of the worst. We’ll give the 392 HEMI above average remarks for reliability. It’s powered many flagship Dodge, Jeep, Chrysler, and Ram vehicles for nearly a decade.
The 6.4 HEMI generally offers an extra 75-100 horsepower over the 5.7 engine. Thanks to larger displacement the 392 is also good for an extra 60-80 lb-ft. Low-end torque is also about 70 lb-ft more than the 5.7 further widening the gap between the two. Clearly, this saying holds true in the 5.7 vs 6.4 HEMI comparison.
2004 – 2012 are all good years for the HEMI.
Overall, the 5.7 Hemi is an outstanding engine. It has earned a reputation as a reliable and sturdy workhorse of an engine. If you talk to anyone that owns a vehicle with a 5.7 Hemi engine, they will likely have very few, if any, bad things to say about it.