The 5. 7 Hemi’s fuel economy is one of its worst flaws, as even the manufacturer’s own official data show. The 5. 7-liter Hemi in a new Ram 1500 can get 15 mpg in the city and 22 mpg on the interstate. Figures in actual life are often lower, especially when the system is stressed or pushed to its limits. FAQs Is the 5.7L Hemi a good engine?
Meaning the car itself is the weakness it is not capable of handling but so much increased power, IE:, bottom end of the engine for a high boost Super Charger, the transmission, the rear end, the brakes, etc,etc,etc. The whole 5.7L R/T Challenger release package not specifically the 5.7L HEMI engine by itself.

The 4.7-liter V8 engine found in Dodge vehicles is also known as the Powertech engine. It is the innovation of Dodge’s parent company Chrysler. It set out to replace the legendary 318 cubic-inch pushrod small-block V8. The goals when developing the Powertech 4.7 engine were to increase both power output and fuel efficiency.

Ram Year. 2012. Engine. stock 5.7 with 6.4l cam and MDS delete. so i'm told that the 5.7 is a cheaper platform for gaining power if you do the work yourself. that said it begs to mention that the new 6.4l have MDS and yes they have cam and lifter issues as well. 2022 Power Wagon. Engine. 6.4 Hemi, 8sp. The 5.7 is rated at 395hp and the 6.4 at 410hp so there is not much difference really. torque is spread alittle further with the 6.4 have 429lbs and the 5.7 at 410lbs. This may be a matter of preference. The Tundra’s 5.7-liter V8 boasted slightly better numbers than the Hemi until Ram’s 2009 upgrade. But if you are looking at a nearly-new truck, know that Ram seriously upgraded its V8. See how the two engines stack up in the table below: Tundra 5.7-liter i-FORCE V8. Ram 1500 5.7-liter Hemi V8. 1gVz. 484 331 235 458 69 123 263 446 13

is the 5.7 hemi a good engine