Is the 5.7L Hemi a good engine? The 5.7L Hemi is a good engine as proven by the 19-year production run and the number of satisfied owners. If it doesn’t develop some of the problems we’ve discussed, it can cross over 200,000 miles without problems. How much horsepower does a 5.7 Hemi have? The forged steel Scat crank and 6.125-inch, 4340 rods were combined with a set of 0.020-over Probe Pistons. The pistons featured a 10cc dome to put the static compression ratio just under 10.0:1-a Hemi eTorque is basically the same Hemi engine but you will have a mild-hybrid construction in it with a special electric motor-generator that generates additional power. The eTorque system is very reliable and long-lasting. But of course, like everything in this world, it has its own problems and downsides. The brand name alone is already a compelling reason to choose this 5.7 Hemi engine oil. It uses top-notch ingredients to deliver up to six times better wear protection and 1.4 times better sludge protection compared to what you can expect from most of its competitors. Yes. You should try to use recommended spark plugs for Dodge Ram 1500 5.7 Hemi or Dodge Challenger. The power output might rise to 5%! Do note that this only applies to older vehicles. Modern engines are already equipped with top-performance plugs, so you might not notice the difference. The 5.7 is a workhorse motor. Tough, reliable, strong and accessible. Sounds awesome and Can use regular gas, oil changes are not as frequent as the performance brothers. It's not a high compression, high revving, hot cammed, variable-intake performance engine. It's V8 fun without getting you in trouble. 1. Is that the design of the motor doesn't get enough oil to the lifters or the camshaft at or below ~1500rpm. 2. Is varnish buildup on the internals of the rollers, causing the bearings sticking to the race, seizing, and causing the failure. As such, it seems that the 5.7 would be better served (not trying to argue that there's a miracle oil Despite popular belief, every vehicle does not undergo a dyno test. Owners are getting a virgin engine essentially. There is no such thing as a Jeep 5.7 Hemi that is broken in at the factory. Break in takes time, miles, fuel, and thermal cycles, none of which Jeep is doing. These are SUV's, not corvettes. JxcH.