i have a 6.1 swapped in my 73 Challenger.. although i don’t drive it everyday , It’s been a great engine so far

Just picked up a 2010 SRT8 with a 6.1 in plum crazy with 30K miles from this old man for 22k! So happy I got it!

2009 wk1 srt8 owner just barely hit 100k on my 6.1 I run Amsoil 0w-40 and it runs amazing.Just take care of these engines and they will not disappoint.

Awesome comparison! I've got an 07 Magnum SRT8 and the 6.1 runs smooth and sounds great. I've had the ecu tuned but it's all stock components and dynoed 408hp at the wheels - fun enough for me :) And I get 22 mpg highway all day, I was surprised to see the stock numbers were lower. Keep up the great work!

Mopar or no car! Love your videos man

Oh wow.. the 6.1 intake manifold is really satisfying for some reason

Wow! I just picked up a 6.1 hemi engine and transmission out of my local junk yard for $400 bucks. I didn’t know much about the the 6.1 but I’m glad I picked it up. I’ll be replacing my 5.7 with the 6.1 as it seems to be the better engine. Thank you for sharing!

I'm a Stellantis(Chrysler/FCA) tech at a dealership that also drag races on the weekend. I work on these engines all the time...well the SRT 6.4 and truck 6.4...we never see the 6.1 anymore because most quit running many moons ago. I can make the 6.1 or 6.4 decision fairly simple for most people: Deciding which engine to start with highly depends on your goal. If you want to keep the engine fairly stock with some bolt-ons and minor mods, go with the 6.4L. Cars like the 1320 Challenger, 392 Charger, and 392 Challener. If you are wanting to heavily modify the engine, I mean go all out, but not spend your life savings doing so, go with the 6.1L. You can upgrade the rotating assembly, bore it a little over, and play with the camshaft selection...when matched with an older 5sp auto or 5sp standard...you got you a hot little ride. If you want to heavily mod the 6.4L, be ready to break the bank because of all the modifying and deleting you'll have to do such as the MDS and VVT systems, depending specifically on which 6.4 you start with. The 6.4L blocks are stronger, but there's all the other headache to go with it. If you want to go that route, either buy a bare 6.4L block or go with a Hellcat crate motor...either will be cheaper than the amount of time and money you'll spend heavily modding a SRT 392. My pick for the most bang for the buck without spending big money on a Hellcat: Dodge Challenger R/T 1320. You get the full power of the SRT 392 and most of the SRT suspension/drivetrain upgrades...for the lower price of a "special edition" R/T. Be sure to buy the passenger seat with it...yes, that's extra.

6.1 all the way💪

Fantastic video! The issue with boost on the 6.4's really isn't the material of the pistons there are tons of OEM boosted engines running Hyperutectic slugs. The problem is the tight ring gaps, as the bores heat up the rings try to expand and they can't and when that happens they pop the top of the piston off because the top ring land is pretty thin on stock 6.4 pistons. With good tuning a 6.4 can run 7 lbs safely. I've been running a 2.3L Magnuson on my 6.4 since 40k miles and I just turned 80k miles. My engine was tuned very conservatively by Hemifever and it's been rock solid. But yes, if you want to run big boost then you will want to upgrade to T6 forged slugs and also a good idea to swap to some billet 4340 rods like those from Molnar.

Great video as always!

In my opinion the 6.1 is my favorite by far. The NAG 1 tranny is an issue but other than that 6.1 is a true muscle car engine. Great video and love the channel.

I have a 6.1 300C, I've always wondered myself which would be better. Thanks bro for always making the fire 🔥 video's!!!!

Just got a 6.1 jeep I love it

Great to see a video comparing the two engines. I currently have a 2006 Magnum SRT8 with the 6.1 with just over 226K miles. I've loved this engine, although the 5-spd auto to me has been the only "meh" part of the drivetrain. I have a 2023 300C on order, I've wanted a 6.4/8spd for a while now and being in the 300 sealed the deal. Also have a 2020 Ram with the 5.7L and my dad has had a 2012 SRT392 Challenger and now a 2022 Challenger Scat Pack (to replace the totalled 2012). Hemis run in the family.

In short terms: If you don’t plan on modding your engine much, get a 6.4 If you plan on building it up to its limits (1003whp stock internal record) get a 6.1

Awesome content…. I learned a lot … I have ADD - yet stayed focused enough to actually watch the whole video 🙌🏼

I like these type of vids. Keep it up!

6.1’s still better cuz it can actually handle boost

Thank you. Another awesome video! 🙂

Awesome video I have a 6.1 and I am Super happy with it

Thanks for this info. Much appreciated!

My 2013 Challenger SRT ran super consistent 12.70's @ 109. It was totally stock. The only thing that I changed was I added a set of M/T drag radials. I raced it every weekend for a couple of summers. Never had any issues. And for fun I had removed all the SRT badging and stripes and added R/T stuff. It took many Mustangs and Camaros by total surprise!!!

Great work. I have an 06 Charger SRT8 with 340,000 miles and running strong. The 6.1 is a great engine - more purpose built for higher RPM but lacking the low-end torque of the 6.4. I have raced many 6.4s with the NAG and they always open up a car length or two from low speeds and then we hold in place up to 140. All of the optimizing for the 6.4 (intake, cam phasing, etc.) creates more low-end power and better MPG. But I am not a fan of MDS. I will pay more for gas

My 06' charger srt8 has the 6.1 hemi , I added a supercharger and some other mods. Runs strong and healthy ! No issues. Change the oil and coolant on time and it will serve you well ! 👍 great comparison here. Great video 👍

Gotta love those big American V8s. Good video very informative

I'm thinking that if one were to build one of these engines from a wrecking yard, I'd go after the "stronger" 6.4L BGE block. I also notice that these two engines connect to a small block Magnum LA bellhousing. A drag race version of the 46-48RH/RE (A518/618) could be built to then drop into some old ratty (or nice) A, B or even C body. Just a tip for us geezers that still fool around with such things in our own garages. FYI, I promise I won't butcher my own Scat Pack 6.4 in my Challenger for "experimental" purposes. I'll wait until I get a deal on a wrecked vehicle and pull that engine.

What sucks so much about the 6.4 is how ‘maxed out’ it is from the factory. You can’t get more hp out of it without spending thousands, while the mustang with a measly 5.0 can get 500whp with bolt ons and a tune

6.1 is a perfect build for a 426 stroker

Another great video, I have one of each in my garage, 05 300 SRT8 and you guessed it 2018 DDSRT

Pretty good video. I am lucky enough to have a Challenger Scat Pack and the manual 6 speed transmission. I have been seeing 25mpg in cruise control going 70mph on longer distance trips. Pretty amazing what this engine is capable of. The only thing I will do to upgrade later down the road will be a good twin disc clutch. Mine has factory single disc. Overall I feel my car is a flagship design from Mopar and top notch pinnacle feeling everytime I drive it. They really hit the very top of what they are capable of engineering, designing and producing. Sad to think all the cool gas muscle may be gone in the future.

Yeah now he tells us. LOL that ticking time bomb of a roller lifter system cost me $11,000 at a dealership I had to replace the entire 6.4 engine this car is mine until death do us part.

😊👍Mopar or no car😊👍 Awesome video. Next generation Durango is going back to it's roots to be a full size suv for 2024 but we guarantee there's going to be a Durango L which is the long wheel based version like the jeep wagoneer and grand wagoneer.

I love my srt8. Sounds insane beats or hangs in with most cars

The 6.4s in Manual Challengers did not have the MDS (4-cylinder deactivation mode) IIRC the wrist pins were redesigned somewhere in 2015-2016 as well

Do you happen to have any information on when/if the upgrades for the scatpacks from Dodge Power brokers is going happen ?

very informative video, can you please provide me the lobe separation angle on both 6.1 & 6.4 camshafts?? i got a lifter failure and probably cam lobe damaged on my 2010 grand cherokee SRT8 6.1L so i have to replace them anyways and contemplating to upgrade to a 6.4 cam/springs if there is any gain by doing it but first need the complete specs for both camshafts which will help me to decide what route to follow, thanks in advance

Thank you!

The 6.1 blocks were made in both Mexico and Canada. That determined the thread size for the oil filter.

7:50 I was wondering were you going to talk about the cams. Most people will only talk about the compression ratio and the heads.

Just remember, neither would exist without that venerable 2.4L turbo :)

The early 5.7 hemi up thru 2008 did not have the lifter failure problem like the eagle engines have.

Loved my stock 6.1. Had it at 230k before I took it apart. I took it apart to do a 426 build. It was running strong til the day I took it apart. Went 140 mph on my way to the shop to work on it. 6.1 for me

Love my good ol 6.1, she sure looks nice in the video 😏😉

There's one person's been testing on issue with the lifters wearing out on these hemi motors is to change out the oil pump to a high flow oil pump variation of from the hellcat.

When the price is way different I say get a good running 6.1. For example a 6 speed manual challenger 2009 for 10-20k vs double cost for minor increases in power in my opinion I can buy two or three used ones over one 6.4 newer model. 🤗

What modifications would I have to do if I wanted to engine swap a 6.1L hemi and put a 64L in a SRT8?

Can you do a modern N/A hemi compared to the old 426 hemi?

Can the 8 speed be paired to the 6.1. The hellcat has been paired to the 5 speed.

I have and like the 6.1 but I like the 6.4 as well

6.1 all the way 🙌🏾🤷🏾‍♂️

Variable Valve Times is just one of the coolest feats in auto engineering I’ve ever seen

I'm loving my 09 6.1 chally got it for 18k with just 99k miles! Came with headers, intake and after market exhaust.. I have to own this one hopefully I'll get the scat pack later on in life

Great video. How's your Daytona doing?

Can you do a video of the 2003-10 Ram 5.7 Hemi engines vs the 2005-10 5.7 Challenger/Charger/300/Magnum engines if you havent already?

My friend owns a 300 SRT 6.1 with 173,000 engine runs fine but he has some electrical problems is in the shop right now he does have some aftermarket goodies though not saying that the car is the issue at all

My guess is that the 6.1L HEMI last longer because it doesn't have MDS. I believe MDS is related to increased lifter failure. That's just a guess.

Personally I think the 6.1 engine bay looks much better than the 6.4.

Intake manifold on 6.1 way better

Which intake manifold better for 5.7 2016 challenger rt

It seems that pre. Eagle 5.7 are much better. I have a 3rd Gen ram with a donor Hellcat engine and transmission waiting to go in. Have to thank the guy who wrecked it for providing me his engine for cheap!

Just shoved a 6.4 in my Nag1 cop car, have to thank the 6.1 my dad brought home to get me into mopars

6.1 LOVE BOOST I know several running 9 to 11 psi on stock lower ends

You should do a magnum video like 4.7,5.2,5.9,8.3

The main reason for the lifter issues happens on 6.4 and 5.7, due to the mds system. thats why alot of mopar fans get the mds delete kit, or just tune it out. 6.1 didnt have that issue or any of the manual cars cus they didnt have to switch on and off when cruising. wish that it could have been a recall cus it was such a big issue in the HEMI engines

Definitely love my 6.1l I've got mine rocking a magnuson supercharger pushing 5psi on stock internals and I have to say this thing screams

I had a manual challenger 6.1L and loved it. Drove it for about five years until we needed a mini van for the kiddos. Miss it every day.

I get 23 highway and 14 city, 6.4L 2018. I do only have 20K miles on it and I baby that damn thing 🤣🤣🤣

Manual transmission 6.4s are non-MDS like the 6.1s. MDS appears to be a factor in lifter failure.

TY,,,,,,WOW incredible very interesting great information super kool ,1st class great info.,, AAAAAAAAAAA++++++++++++ again great video I liked it a lot ,keep up the great work.

2007 Super Bee 0066/1000 Solo Mach X exhaust. Love that car. Oil changes on time and coolant flushes and she purrs. All 6.1 owners Just Keep an ear out for roller lifter noise at 80k.

13:38 shows an Australian SRT, registered in Victoria state.

I’m considering a 6.1 hemi either the Magnum or Jeep but I’m not sure if these are unreliable or people just beat on them too much.

Thinking bout buying a 07 srt8

The only Legendary Engine in This Documentary is The 6.1L.... Respect for the 8 All Day.

I like the 6.1 six speed challenger many years of trouble free driving.

I have a 6.1 and the 6.2 Hemi '07 6.1 Jeep SRT8 140k miles daily driven, other than getting 10 mpg and a few electrical issues I've had no major problems. Being a 15yr old Hemi it definitely requires a higher level of regular maintenance otherwise very reliable. AWD launch never gets old. The 6.2 is my other Jeep. it's ridiculous and shouldn't be legal...I passed on purchasing a 6.4 Jeep SRT only because they decided to throw the Hellcat engine in the Jeep Trackhawk

I’ve always been interested in one of these newer N/A hemis but just scared of Mopar reliability/longevity. Owned many GM & Fords

I can't pick a side eather. There both Hemis! 👍

6.1 for life

Just have add a 6.1 onto my Duster 72 and wait for the running experience... and forget to mention a cam...

LA big block vs Hemi compared 5.9 Magnum V8 to 6.1 Hemi V8 , 5.2 Magnum V8 to 5.7 Hemi V8 engines.

How would I swap a 6.1 into a 2015+ Charger?

So 6.1 or 6.4 which do you guys prefer

6.1 was a lot more "raw". Traction control sucked, skid control sucked, torque management was nearly non-existent, and the NAG-1 can hold a ton of power with a proper converter and TCM tune. Drop some good pistons in it, and they'll make a ton of power with boost. Richard Holdener took a stock 5.7 of the same era and made north of 1000hp before breaking a piston. Good video.

6.4 lifter roller was upgraded with thicker beefier Needle bearings, later production, same Lifters found in Hellcat 6.2. Should give people peace of mind about Lifter reliability and durability.

4:33 is the most beautiful challenger I ever seen

fire

I’ll take the 6.1 over the 6.4 any day. 6.1 is a better built motor with less problems.

So is it even worth buying a hemi 6.4l? Or will it just blow up from the hemi tick

6.1 hemi can handle a lot more boost than the 6.4. The entire rotating assembly on the 6.1 is much better. The pistons on the 6.1 aren’t like the 6.4. I know of a stock 220k mile 6.1 that holds a 175 shot of nitrous reliability.

I mean Boost is fine on the stock pistons as long as you gap the rings as shown by Holdener's big bang video on a Stock 5.7 he was pushing 20PSI before it blew and it's due to the extreme backpressure of a single turbo that's too small

6.1 BETTER THAN 6.4 ALL DAY But 7.0 BEST FROM THE 6.1

15:31 ohh man really? Im just kiddin 🤣🤣

The 6.1 can make almost as much hp as the 6.4 if theyre both have the same mods

Man I want a challenger with a 6.1 so bad.

So it seems like the stock lifters they use on the NA engines can't handle more than 360ish horsepower. Which is strange because it's not like that power is getting transfered to the lifters. They're not getting the brunt of it. Perhaps they can't handle as aggressive of a cam as these engines have. What I don't understand is why they don't take a look at what gm and ford used in their pushrod engines and follow the same formula. It would make a lot more sense and get rid of a common plague amongst their v8s.

Raced one with my MUSTANG coyote.... Let's just say he got humbled 😁

I still don't understand why the Durango needs the shitty cast iron exaust manifold

I just got done watching that I do cars video with the 6.1