This means that for its 5.7-liter (345ci) displacement, it is lighter than a typical comparable displacement engine, even though it has a deck height 225 thousandths taller than a small-block
5.7L hemis from 2005 to 2008 are known to drop valve seats. The heads were revised in 2009, so it's not an issue with later engines. My 2007 5.7L dropped a valve seat at 129,786 miles, which destroyed the motor. My engine had never overheated, and had never been abused in any way.
I would get a 2009 or newer, the Eagle update has better flowing heads, more power, and does not have the valve seat issue the early versions had. Granted both my 5.7s and 6.1 have been flawless, and are the pre 2009 update. I have a 2006 Dodge Ram 1500 with the 5.7 Hemi.
Oil pressure is one of those things. If you have a 5.7 Hemi, then you might be wondering what the normal oil pressure for that engine should be. The good news is that there is no need to worry too much about it. The average oil pressure for a 5.7 Hemi should be between 40 and 60 psi when the engine is at operating temperature.
5.7 HEMI Header Upgrade Summary. The 5.7 HEMI is an excellent engine, but it is fairly underpowered from the factory. Fortunately, a few simple bolt-on mods can really wake up the 5.7L V8. Among the best power mods is a set of headers. Not only do they offer impressive 10-30+ horsepower gains, but they also have a number of other benefits.
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
Ram Year. 2019. Engine. 5.7 Hemi. I have a 2019 Ram Big Horn equipped with 5.7 Hemi - 8 speed transmission- 3.92 rear axle ratio - factory towing package. I tow a 7000 pound travel trailer to the NC mountains several times a year. The towing capability is very comfortable in cruise control and control trailer towing mode set.
For the 2009 model year, Dodge engineers updated the 5.7-liter HEMI with Variable Camshaft Timing (VCT)–the Dodge version of variable valve timing. In the Ram 1500, this V8 is rated for 395 horsepower and 410 lb-ft. of torque. One perennial complaint about the HEMI is that its large combustion chambers prevent it from being fuel-efficient.
The Dodge 5.7 HEMI is a popular engine in Dodge and Chrysler performance vehicles, as well as Ram trucks. Its enormous displacement offers decent power from the factory. The 345 HEMI, on the other hand, leaves a lot to be desired. A few minor modifications can take the 5.7 V8 to new heights.
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
The HEMI, likewise spans several engine sizes and configurations. Over-all, though, I feel that the LS series is a better motor. -Better fuel efficiency when comparing similar ci/hp motors between the two families. If my Jeep had been offered with an LS1 instead of the HEMI, I would have gotten it with the LS1.
The hemi when properly equipped can tow over 9000lbs It won't get as good of gas mileage when towing vs the diesel or unladen for that matter but if you don't need it, don't buy it. The diesel is superior to the hemi in every way imaginable, but if you don't need the diesel to tow with, get the hemi. It is a great engine and is very reliable.
In easier words, Horse Power is the raw pulling power of the engine without any mechanical losses. The horsepower in a 5.7 Vortec engine is 255 HP. And the horsepower in a 5.3 Vortec engine is 285 HP. So, we can see the pulling power of a 5.3 is higher than a 5.7 Vortec engine.
It's like anything mechanical, the more age it gets the more things will wear out. We've got almost 100k on Amy's 5.7 right now and the alternator went out last weekend. I told her that she's getting enough miles on her now (the car that is), these wear items like this will start to have to be replaced. So I'd say, around 100k miles you will
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is the 5.7 hemi a good engine
