The Hemi engine, by design, does a better job of burning all the fuel in the cylinder. Also, because of its design versus a flat head, the surface area is smaller and that means less heat escapes, plus peak pressure can be higher. Also advantageous, is the size of the valves.
Is the 5.7 Hemi engine reliable?
Again, the Chrysler 5.7 HEMI is a pretty reliable engine. Problems can and will occur at some point in the engines life. However, it’s a risk we take with all engines and the best we can do is maintain them as well as possible. 5.7L HEMI longevity should be north of 200,000 miles if well maintained.
What are the cons of a Hemi engine?
Most experts agree that a major drawback of the Hemi design is that it cannot incorporate four valves per cylinder. And that’s OK when it comes to racing cars, which are limited to two valves anyway – but modern cars use an alternative design with four slightly smaller valves that let the engine breathe more easily.
Why do Hemi engines tick?
Low quality fuel can cause the hemi tick. Fuels that contain high amounts of ethanol or that are low octane may not properly lubricate the fuel injectors and can lead to a slight tapping or ticking noise. Low-octane gas has also been known to cause an ignition knock in high-performance engines.
How much HP can you get out of a 5.7 Hemi?
How much HP can a 5.7 Hemi have? The maximum HP you can add to the 5.7 HEMI engine is 650HP.
What is high mileage for a 5.7 Hemi?
5.7 Hemi engines are good for 250-300 000 miles and more if properly cared for and regular maintenance is carried out. Early models suffered from valve seat issues which was rectified after 2008. It’s not uncommon to find high mileage 5.7 Hemi trucks running around today.
What is the best year for the 5.7 Hemi?
2004 – 2012 are all good years for the HEMI.
Did Ram fix the Hemi tick?
Short answer, no, RAM didn’t fix the tick as far as I have read. Owner options like what has been written in other threads and a bit above abounds but I believe it’s still there. Sure are a bazillion posts/articles about it online.
Which is better Hemi or Cummins?
Diesel. The Ram 2500 is available with two engine options — one gas and one turbo diesel. Overall, the gas HEMI engine provides the best gas horsepower among 250/2500 pickups — and more payload capacity than the Cummins — but the turbo diesel outperforms it with mountains of torque and more maximum towing capacity.