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.
Is the 5.7 and 6.4 the same block?
The factory SRT8 392 (6.4) is a stroked version of the 5.7 with additional internal performance mods. It is in fact derived from the same block. Now, to be clear, the 5.7 is in fact different from the block of the 392 crate engine (not to be confused with the 392 SRT8 engine in the Challenger).
Is the Hemi 6.4 a good 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.
Can 6.4 Hemi replace 5.7 Hemi?
It will bolt right in. The only thing that will require wiring is if you use the 6.4 intake for the short runner to activate. That will require a window switch.
Which Hemi is the best?
Top 10 Hemi Powered Mopars Of All Times
- 1966 Dodge Coronet/Plymouth Belvedere.
- 1968 Plymouth Barracuda Super Sport.
- 1969 Dodge Charger Daytona.
- 1970-71 Dodge Challenger/'Cuda Convertibles.
- 2003 Dodge Ram Pickups.
- 2015 6.2 Hellcat.
- 2016 6.4 L – 392 ScatPack Shaker.
- 2016 Dodge Challenger Drag Pak.
Is the 5.7 Hemi a good engine?
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.
How long will 5.7 Hemi last?
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 were rectified after 2008. It's not uncommon to find high mileage 5.7 Hemi trucks running around today.
Is a Hemi better than a V8?
First, let's talk about the many advantages. 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.
Is a 6.4 Hemi a big block?
The modern hemi is definitely a small block. The small block / big block is not determined by the factory displacement (for example, Chevy built a 400 cubic inch small block that had more displacement from the factory than the original 396 big block).
How much HP does a 5.7 Hemi have?
5.7-liter HEMI® V8 w/eTorque – Opting for this famous engine in your new 2021 Ram 1500 will give you an impressive 395 horsepower and 410 lb-ft of torque. 5.7-liter HEMI® V8 – This iconic engine is favorite choice with many new truck shoppers who want a powerful and capable new truck.
What's the difference between 5.7 and 6.4 Hemi?
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.
What kind of mileage does a 6.4 Hemi get?
The 2020 Ram HD 2500 6.4L Gas
It also has MDS (cylinder deactivation) grill shutters and a 3.73 rear end. All of those factors help a little bit with efficiency. Over 1,051.8 total miles, the Ram averaged 15.4 mpg.
Is the 6.4 Hemi a good engine for towing?
6.4L V8 HEMI with MDS
The eight-cylinder HEMI is standard on each 2021 Ram 2500, and it delivers great towing and payload capabilities. Variable valve timing delivers the power you need through a wide torque band, and the multi-displacement system (MDS) with fuel saver technology helps increase highway efficiency.
Can 5.7 Hemi fit 6.4 heads?
To fit the larger valves and improved port, the guide is moved outside the port so the heads will only fit a 6.4 Hemi engine or something with 4.06-inch plus bore and custom pistons with the correct valve reliefs.
How many miles will a 6.4 Hemi last?
The maximum mileage you can expect from a 6.4 V8 Hemi is anything in excess of 250 000 miles.
Does the RAM 6.4 Hemi require premium gas?
Well-Known Member. 89 is recommended, 87 is acceptable. Premium offers no benefit and is suggested not to be used.
Can a 6.4 Hemi handle a supercharger?
ProCharger was the first to offer complete supercharger systems for 6.4L/392 HEMI engines. Our company leads the way again with power gains of over 215 HP possible on standard premium pump gas, putting the power output of the 6.4L (392) engines at more than 700HP with optional race intercooler.
Is the 5.7 Hemi a true Hemi?
Says Lee: "Everything else, in terms of the valvetrain arrangement, the shape of the chamber, is in fact a true Hemi. It's not as huge as the old Hemi, of course." At 345 hp, the 5.7-liter Hemi V-8 has 100 more hp than the 5.9-liter Magnum V-8.
Is a Hemi better than a Chevy?
The 5.7-liter Hemi V8 in the Ram is better than the 5.3-liter V8 in the Chevy on paper. The Hemi makes 395 hp and 410 lb-ft of torque while the Chevy's similarly sized and priced V8 makes 355 hp and 383 lb-ft of torque.
What is so special about a Hemi engine?
What is so special about a Hemi engine? The Hemi engine's unique design, which features less surface area, results in less heat loss. This means the engine's peak pressure can be higher, which can result in better efficiency. Additionally, larger valves mean it's easier for air to flow through a Hemi engine.
What problems does the 5.7 Hemi have?
The 4 Most Common Dodge 5.7 HEMI Problems
- Unexpected Misfires – Failure Of The Spark Plugs. Let's start with a problem that is the least common of all four, spark plug failure. ...
- Failure Of The Exhaust Manifold Bolts. ...
- Problems With The MDS. ...
- Ticking Sounds Originating From The Engine.
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.
Do Hemi engines need premium gas?
Turns out it's also for owners of Fiat Chrysler's Hemi 5.7-liter V-8, as the company recommends 89-octane fuel for this engine.
Is the 5.7 Hemi good for towing?
The available 5.7L HEMI® V8 engine with eTorque Mild Hybrid Technology System blends performance-enhancing and efficient technologies with the addition of an available extra 130 pound-feet of torque for a V8 gas towing capacity of up to 12,750 pounds( Disclosure1).
What year did dodge come out with the 6.4 Hemi?
The 6.4L/392 HEMI V8 engine was first introduced in 2011 in the passenger car line as a replacement for the 6.1L HEMI engine. With its increased size, this new engine was even more of a powerhouse over its replacement on SRT8 vehicles.
