Is the Ram 6.4 Hemi a good engine?
Mason Cooper
Published Apr 29, 2026
In general, the 6.4 Hemi is a big reliable, American pushrod V8 engine with a factory warranty for five years or 100,000 miles. In stock form, the 6.4 Hemi is a great engine that lasts and serves hundreds of thousand miles. But, the stock 6.4 is by design not built for boost and pushing more power.
Subsequently, one may also ask, 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.
Similarly, what is the difference between the 5.7 Hemi and 6.4 Hemi? The 5.7 Hemi engine has a stroke length of 90.88 mm (3.58 inches), whereas the 6.4 Hemi engine has that of 94.6mm (3.72 inches). We all know that the longer the stroke, the better. The longer stroke allows the 6.4 to deliver more power than the 5.7 Hemi.
Also know, what is the fuel mileage for a 6.4 Hemi?
Put 'Em on the Trailer
| 2019 Ram 2500HD Power Wagon 6.4L Hemi (CrewCab) | |
|---|---|
| REAL MPG, CITY/HWY/COMB | 10.2/15.3/12.0 mpg |
| EPA CITY/HWY/COMB ECON | Exempt from testing |
| ENERGY CONS, CITY/HWY | Exempt from testing |
| CO2 EMISSIONS, COMB | Exempt from testing |
How much horsepower does the Ram 6.4 Hemi have?
410 horsepower
Related Question Answers
Is the 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).Do Hemi engines need premium gas?
Basically, a fuel's octane rating is the measure of how much compression a fuel can withstand before igniting. This is why high-performance engines require more octane. If you have the HEMI V8 engine, you should use the 89 octane, if you have the base V6 engine, then it is okay to use the 87.Why does a Hemi have 2 spark plugs?
Because the chambers are placed next to each other, they have better access to exhaust and intake gases. Its spark plugs are also in a different location compared to flathead engines. Because they're inside the HEMI rather than on top, the combustion process runs more smoothly.Can you put 87 in a Hemi?
All of the new vehicles "CAN" run 87 octane fuel, but it's not recommended and used repeatedly or long term will eventually result in engine damage. It should not spark-knock, as the ECU (computer) should detect it and detune the ignition accordingly but with commensurate sacrifice in both performance and MPG.What kind of gas does a scat pack use?
Premium unleadedIs the 6.4 Hemi gas or diesel?
The 2020 Ram 2500 has two available engine options to choose from: the 6.4L HEMI® V8 and 6.7L Cummins® Turbo Diesel I6.How much torque does a 6.4 Hemi have?
6.4L Hemi Engine Specs (Truck Models)| Engine: | Chrysler 6.4L Hemi V-8 | |
|---|---|---|
| Peak Horsepower: | Ram 2500/3500 pickup | 410 HP @ 5,600 RPM |
| Ram 3500/4500/5500 cab and chassis | 367 - 370 HP @ 4,600 RPM | |
| Peak Torque: | 429 lb-ft @ 4,000 RPM (pickup and chassis cab models) | |
| Maximum Engine Speed: | 66RFE automatic (<= 10,000 GVWR) | 5,800 RPM |
What is considered top tier gasoline?
Top Tier is a performance standard for gasoline, backed by major automakers. Since the 1990s, the Environmental Protection Agency has required a minimum level of detergent for all gas sold in the United States. To be considered Top Tier, the gasoline must have a higher concentration of detergent added to it.How can I get more horsepower out of my 6.4 Hemi?
Cooler air is denser, carrying additional oxygen, prompting your 6.4 liter Hemi ECU to add more fuel, thus increasing horsepower. The air intake system utilizes a seven-inch, non-woven synthetic filter media to help protect your engine from harmful dirt, dust, and debris.Which Ram engine is the best?
Why the Ram 1500's V6 is the best choiceBut when given the choice, MotorTrend chooses the 2019 Ram 1500 with the six-cylinder eTorque engine. Though the V8 may be quicker off the line, MotorTrend experts see no point in the added power if you're not planning on racing your new pickup.
Is the Hemi engine reliable?
While these other advancements have their pros and cons as well, the Hemi engine is renowned for its reliability and impressive power output through its hemispherical design. While the new Hemi engines don't have the same hemispherical shape that its predecessors had, it still relies on that shape to deliver its power.What is the best year for Dodge Ram 2500 Diesel?
- 1989-1993 Dodge Ram 2500 and 3500 - Timeless Diesel.
- 2003-2008 Dodge Ram 2500 and 3500 Heavy Duty - Best Used Diesel Value.
- 2010-2013 Ram 2500 Heavy Duty - Most Capable Diesel.
- 1999-2003 Super Duty - Best Budget Diesel.
- 2008-2010 Super Duty - Best Diesel to Modify.
What size motor is the 6.4 Hemi?
6.4L = Engine DisplacementA 6.4-liter engine is equivalent to 392 cubic inches because both measurements are different units of expressing engine displacement.
How many MPG does a 5.7 Hemi get?
Find and Compare Cars| 2020 Ram 1500 4WD | |
|---|---|
| Personalize Find a car | 8 cyl, 5.7 L, Automatic 8-spd Compare |
| Fuel Economy | |
| EPA MPG | Midgrade Gasoline 17 combined city/highway MPG 15 city 21 highway 5.9 gals/100 miles |
How many miles per gallon does a Ram 2500 GET?
15.7 milesIs a hemi better than a v8?
There are three primary pros of HEMI engines when compared against standard V8 engines. This allows for better temperature control of the engine and reduces the chances of the engine overheating. Another pro of HEMI engines is larger valves and increased space available between the valves.How good are the 5.7 Hemi engines?
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.What is the difference between 6.2 and 6.4 Hemi?
The engine displacement of all three SRT engines isn't very different from one another (392 cubic inches, and two engines are 376 cubic inches), however, the amount of horsepower (reminder: 6.4L engine produces 475 horsepower, the 6.2L SRT Hellcat engine produces 707 horsepower, the 6.2L SRT Demon engine produces 840How much does it cost to replace a 5.7 Hemi?
As low as $2895.00 DELIVERED (pricing depends on year of engine).What size engine is a 5.7 liter Hemi?
It is a 90-degree V8, 2-valve pushrod design like the past Magnum series engines, displacing 5,654 cc (345 cu in), with a bore of 3.917 in (99.49 mm) and a stroke of 3.578 in (90.88 mm). The 5.7 L Hemi is made at Chrysler's Saltillo Engine plant in Ramos Arizpe, Mexico.What's so good about a Hemi engine?
Hemi AdvantagesHemi surface area is smaller than that of a flathead engine, so less heat escapes during combustion – and hotter fuel burns better. And because they're positioned on opposite sides of the chamber, the Hemi valves can be bigger than on previous models, which put them side by side.
