924 HP on a pump gas 540 is actually really impressive. Shows what a well built engine with a lightweight rod and piston and really good head flow is capable of.

2:00 We know we know Steve Morris makes the coolest engines ever 😁. Love the cooling. SMX in my dreams

I laugh when people say "pushrod engines" are out dated.. From 1,000,000 mile taxis, to 10,000 HP top fuel dragsters, they work...

Now that is engine art! Beautiful!

Just SO DAMN AWESOME. Real marvel of experience went into making this !!!!!!!!! Very proud of you guys.

John Lingenfelter would have been proud of You. You are amazing at what You do! Innovative,very impressive,durable.

Steve your a pure champion!! That's some serious power out of a motor that's not intended to be NA and on street fuel . Amazing!!

Love it!! Steve says to disregard the top HP number because that's a fluke because of how the dyno unloaded the engine. So he derates the run. Everyone else takes any number they can fudge and adds to it. He's the real deal!! Love the water-cooled engines, multifuel capabilities, 3 stages of injectors, nice setup.

Excellent, you’re my favourite engine builder Steve.

Finally more people are starting to realize that water crossing through the head gasket is a design flaw. I have been wanting a water sealed block and water sealed cylinder head since I found out coolant went from block to head, so 13.

That is a great full Job thank you Steve for that nice content 👍🏻

My west coast ears keep hearing “waahdir” Cool video, love the setup 👍

2👍's up Steve thanks again for taking the time for us all to be with you for the great show

Love your KZfaq videos and Steve tech is even better, can't wait for the next one. Would be an awesome place to work.

Thank You, for making this video and taking the time to explain.

Ladies and Gents, SM breaks the law and works on an N/A engine. Great stuff.

Wow that's Awesome buddy! Hi from Australia 🇦🇺🇦🇺👍👍👍👍👍

These videos should have way way more likes ..well done !!

Merry friggin Christmas Mike Bradley. Lucky dog. 👍

That 4-zone radiator loop is DOPE.

I am impressed with the high rpm you are able to get out of your SM engines and still have them be so reliable.

Beautiful engine

Love the way you think. Some people like to 10.5 cr. Then add boost not me I love shoving all that air in a big hole add plenty fuel boom make things happen. Great job SM. And crew have a happy new year’s.

Steve that motor is simply the best motor out. I want 2 one for my car and one too put in my living room too look at

Very impressive N/A!

Very nice and cool motor !

I enjoy looking at engines in the combinations just as much as I do the car itself that it goes in. I think ultimately when we see a vehicle especially a custom vehicle or a race car. Our first thought that pops in our head what engine is in it how big it is how powerful it is what engine combination are we looking at as far as power adders. I think looking at these billet engines is like looking at a work of art and they don't have to be billet for me to admire it. I don't know maybe this is the gearhead in me. A lot of people say that custom cars is the paint job that makes the vehicle to me what makes the vehicle is the engine when you open that hood what is in that engine bay. It's like opening a treasure chest or opening a jewelry box full of diamonds to me it's the focal point of the vehicle.

That is a really cool engine Steve! I cant even imagine if you had 44 degrees from the initial load in, and an N/A cam that was bigger! This thing would rock! Just goes to show that your base engine before the boost, is totally legit.. Thanks for posting..

Lost for word's, thanks for the info. We ran a blown Donaven alt years ago and we were always burning up pistons at 8500...

The way that sucker revs up to peak power is a bit special. Love to see what one set up purely for NA with maybe lighter internals!

Will need the drive train that's bulletproof also Steve will have to recommend the components great looking engine

Very impressive

Truly an engineering Marvel!

Holy hell the SMX is a fucking beast!

Can’t wait to run one Steve....

Thanks for sharing that. I've wanted to know what one made NA.

Excellent engine.

Can’t wait to see what old Cleetus and mullet dose with a new SM big block in her. I see 6s with hardly any effort now.

I'd like to see Steve, Kevin (KSR) and Laz do a project.

I think it's cool, love to have it in my Torino.

You are the maestro Sir

Plus another 2500 hp with boost. God bless America. Yeah!

Heart of a beast

Wow I need to win the lottery, that way you could build a engine for my boat. 😉😁😁

Would be interesting to see what you could do in a 289 cid N/A engine for aftermarket Cobra cars .

Wadder in Wadder out, hot darn that's Flippen awesome this thing will haul asphalt....I'm sorry for my language... I just want to see Steve cuss once I awhile to prove he's not Mr. Rogers in disguise... lol😛

I love being a European and hearing wAtaer

I think you took engine building to another level.My question to you is I have a 65 Mustang what can you do for me

Ever do any say 800hp dyno loads sustained to see how the temps hold? Wouldn't really matter for a car but wondering for a boat.

How much compression do you run on your turbo and supercharger engines

Are you controlling water temp with external t'stat ?

you know what would be fun here is putting a couple of led lights in the intake and wandering the camera lens around...maybe some smoke or a string couldn't do that with carbs.

Seems like a very smooth engine The idle is so quiet and smooth. Maybe because its in the other room? whats it sound like starting up when you are right next to it?

Would you mind telling me a little about overlap for turbo usage. I don't understand using a lot of overlap for turbo usage. For street I'm thinking 0 or- overlap

All I want for Xmas

Good job!!! That's one of them bad a** trump 2020 motors. Ain't no joke.

How much can you run up the timing given the fact that it is built as a boosted motor (in this configuration) with a bit lower compression?

These engine would be awesome for a go fast boat with the cooling set up

Yeah, I think that would tow a Drag Week trailer no problem.

I want a career with you. Completely understand what you're doing

Gotta love it! Just think how much more power it would make with more compression and n/a cam I dont think a safe 1300 is out of the question! We kinda know what procharged and twin turbo setup's do, I'm not a nitrous guy at all but I would like to see one of these with around 572ci and a few kits with some ZOOMIES and see what happens when you throw one of Chuck Fords blowers and a big screw blower on a smx and spin the hell out of those blowers

65rambler marlin , Build ! I maybe could cover the shipping on that engine! Lol

Dual plugs will cut the timing advance by 45% give or take on those big bore NA motors. Too far for the flame front to travel at low kPa. Boost makes the burn faster. Autoignition at cylinder pressure X with forced induction. As soon as one part of mixture ignites and expands, it all blows up from the increase in pressure. Super low timing advance. You have that awesome CNC rig now, can dual plug anything you want. Like the OEMs, dual plugs in the new Hemis and the Ford Hemi (6.2 Boss). Need 2 plugs to meet emissions with the plug off to the side in that shape chamber. The heart shape is the only one that will burn fast enough to run a single plug in a bore over 4 inches and still be efficient enough to meet emissions. Over 4.3 inches it would be borderline but I think it would fail without higher compression risking detonation.

Nice 👌

Steve you need to work out something with your boy Cleetus. He needs a nasty big block in Mullet just like this that he can run on pump gas.

Thanks!

I'd like to see a N/A focused smx on 93

What compression is low

Man I need that

Wydder in wydder out! 😂

Awsome

What's the bore space on this engine?

I wish I could afford a 940 horse SMX n/a motor, let alone a boosted one.

alix taylor needs one of your motors in her 55 you should sponcer her

I’d love to put this in a daily driver and beat on it for 100,000 with regular maintenance, like a Toyota and see how it looks. It’s so over designed, it probably would look brand new. That’s one mean daily driver.

WOW......SMx

You're tourqe tuning to keep from spinning at launch

Steve, do you use heli-coils in your Aluminum heads and block water connections?

I would like to see an experiment with that engine, N/A Cam, and 40 Deg timing on pump gas with the right tune and injectors.

I heard if you post at the right time Steve will send you a sweet little 1000 horsepower street engine.

40* timing on 93 not set to kill wow. What she normaly take up top NA? Though I guess it's lower comp.

I will take it

make Cleetus one of these bad boys!

Nice whats the sticker on that bad boy?

Awesome! Where is the timing on the blown version?

540ci and93 octane and obviously not set on N/A kill making 920 hp that says a boat load !

At 70 psi on alcohol it would be adequate. Just your average 5,000 hp street engine.

WADDER IN, WADDER OUT!

Have you thought of free Valvefrom Christian

940 on motor with 10.5 compression!? The magic has to be those heads! You can take a 598 bbc with a badass set of brodix heads and the same 10.5 compression and still not make 940. Steve morris really figured this shit out.

106hp/liter NA with pump gas and boost friendly compression? I’d buy that for a dollar.

He said the baddest street engine.

So much waahdir everywhere. Waahdir, waahdir, waahdir, etc...

What’s the gas mileage

What I'm getting is woter is alot better than water when it comes to cooling.

Surprised to see N/A.

920hp na is 1840hp at +15psi of boost 2760@ 30psi, over 3k at 37psi

LMAO. The Greta sticker on the window is classic.

Ya rite that engine was just starting to pull

SMX. THE BEST OF THE BEST. IF YOU WANT YOU GOTTA PAY UP.