426 Hemi Engine Build -- Part 1

From www.horsepowermonster.com/ .
The Horsepower Monster follows the build of one of the very few Chrysler 426 Hemi's in existence. You can see the other videos in this buildup along with the dyno sheet here:
www.horsepowermonster.com/2012...
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[@tyhighway2127]

Why is there no "TV SHOW" available for people to see these beautiful & monstrous engines being built & run because it is almost as nice as a religious experience to see this motor assembled, and fired up. Truly, there is nothing even close to the magnificence of these Hemi motors. The sheer size, the shape, the "ARTISTIC" perfection of the Hemi....is truly life altering. If you don't see this, or get this......you are in pre-stages of Alzheimer's. You have nothing going for you....if you don't have this thought. The HEMI......in all its glory. No one should even talk about other engines while this monster exists.

[@zimmy4661]

Chrysler started production of Hemi V8 engines in 1951 with 331 cubic inches, 1958 was the last year of the "early" hemi engines for Chrysler, Dodge, and Desoto. The 1955 Chrysler 300 was named such because it was the first domestic production car to have 300 horsepower. The 1956 Chrysler 300 had a 354" Hemi rated at 355 horsepower being the first production car to have over 1 horsepower per cubic inch. To overlook these engines by saying Hemi production started in 1958 really discounts your knowledge!

[@Cornfed528]

I am being picky here but Chrysler started building Hemi engines in 1951 not 1958. !958 was the last year the 1st generation Hemis were built. Thanks for the videos!

[@tommyau2006]

was just going to say that

[@paulmatter7948]

Yep, I had a 52 Imperial with a Hemi

[@Cornfed528]

@@paulmatter7948 A dad of a friend of mine in High School had a 1953 Chrysler Imperial with a 331 Hemi.. We called it Shermie because it was built like a tank and had gone thru a near head on collision with Mercury and I think the bumper, hood and one front fender had to be replaced and the Mercury was totaled. I swear it seemed like you could put a football team in it was so roomy inside..

[@thralldumehammer]

Move Over, People Are Racing MOPAR!!!! More Power baby yeah😁

[@christineplymouth3271]

beautiful machine, really enjoyed your video!

[@freeskier175]

I like seeing comments by all the pro builders and historians here. 🤐

[@scotte2815]

Chrysler began building hemi engines in 1944 with the IV-2220 inverted V aircraft engine. 2,220 Cubic Inches

[@MrJohnnyDistortion]

Gotta stagger the rings properly and away from,the thrust side of each hole.

[@freeskier175]

Thanks for the pro tip captain obvious look at me I know something....that's elementary info...

[@alltheway5173]

Beautiful, just beautiful. I almost shot a nut, looking at that engine. A fucken work of art!! Look at the size of those fucken pistons!!!

[@josenoguezalonso3288]

Está súper este motor

[@dane-xxx-8713]

like to see more of that 426

[@sking0369]

I loved watching this build video but could sure do with out the swanky music.

[@scotte2815]

yes, the music sucks!

[@jlo13800]

This engines is perfect to make an inverted loop scavenged 2 stroke. Use a blower for scavenging and both intake /exhaust open at the same time.

[@Leftycraig48]

WHAT????????

[@Boredout454]

Not sure why he said the weight of the pistons limit the RPM, these engines sing at 7,000-7500 stock

[@BuzzLOLOL]

Hemi piston tops have to be domed on racing engines to match the hemi shape of the combustion chambers, making them heavy...

[@ThePaulv12]

@@BuzzLOLOL Yeah but high piston weight doesn't stop them revving up is what he's saying. You'd think it would but it doesn't seem to. Even a low 9:1 compression piston in a Hemi has a fairly big dome. These days, they're making strokers that you would think increase the piston speed and reduce rpm, but the longer stroke allows forged pistons only 60% the weight of aftermarket forged pistons using the stock stroke so they still rev about the same. They move the pin closer to the dome and the overall height of the piston is greatly reduced, but they are still not 'shorty' pistons. I read an article awhile back and it talked about Mopar RB blocks and how they could've kept the B engine deck height and moved the pin in the piston. With the B engine they reasoned a slightly longer rod to offset its too heavy piston. Nicks Garage (KZbin) had a fairly mild 505 Hemi make about 630 hp at around 6500 rpm. IIRC I think 505 is 4.125" stroke combined with a standard sized bore and when combined with a 4.5" bore aftermarket block makes the 528 Hemi which was a Mopar Performance crate motor for awhile that made 600hp, 600ft/lbs @ 6000rpm (all the 6s) on a low 9:1 comp! Some of these low deck Wedge engine strokers are getting seriously light pistons and rev up like a small block even though though they're 500+ cubes.

[@northerniltree]

The elephant goes to prove that having a big & heavy crank wins over the ladies.

[@BigEightiesNewWave]

took GM Decades to do a bottom end like that.

[@TheSleepyMechanic0524]

Why not use I beam rods instead of H-beam?

[@Dirtyol12valve]

Los The Ghost h beams are stronger.

[@XxMusclecarsxX]

why a flat tapped?

[@ThePaulv12]

Big frank because a solid lifter flat tappet cam (as opposed to a hydraulic flat tappet) is superior RPM wise. Hydraulics become unreliable after 6500RPM whether roller or not. Since sollid rollers hate idling - which rules them out for street use, then for your high revving Hemi an old school solid lifter with a modern grind is a superb choice.

[@JerseyMikeP]

ALL street hemi's where rated at 490ft-lbs, not 472.

[@JerseyMikeP]

+JerseyMikeP And "ALL" of them were UNDERRATED, there where 4 of them and they had different cams so how could they all have the same rating? The Early, small cam'd 65 model made 474hp@6000rpm /474tq @4400rpms - gross or 390hp/461TQ for todays standard rating. The 68-71 made more HP with their large cams. The 68-69 was the most powerful of the street Hemi's being solid lifter camsshafts...more rpm stable.

[@BuzzLOLOL]

Hemis rated 480 torque or less... 6-pack 440's 490 torque...

[@JerseyMikeP]

Buzz...Hemi was 490 lb-ft @ 4,000rpms...here are some Brochure pages/links.www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwitwff0pdPYAhUhYt8KHdxFD14QjRwIBw&url=https%3A%2F%2Fwww.allpar.com%2Fmodel%2Fsatellite.html&psig=AOvVaw3FbjvCH2IPLnEnuQQVu8D7&ust=1515876427647603www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwitwff0pdPYAhUhYt8KHdxFD14QjRwIBw&url=https%3A%2F%2Fmyclassicgarage.com%2Fmarketplace%2Fknowledge_base%2F1968-plymouth-barracuda&psig=AOvVaw3FbjvCH2IPLnEnuQQVu8D7&ust=1515876427647603

[@chadhaire1711]

@@TheSleepyMechanic0524 GHOST: Wrong--the 425 hp was the old pre-72 rating with no air cleaner, muffler, belts, or smog gear. After 1971 ALL cars are rated at SAE-NET. as installed in the car. Thus the 426 hemi is really 350 horsepower, less than the 2019 V-8 5.7 at 375. The 440-6 pack is not 395 hp, but 325...the 440 375 hp version is really 305 hp, no more than a common 2019 V-6 engine. A 2019 Ford Mustang with 4 cylinder 310 hp ecoboost has more power then a 1970 Dodge with 440-6. FACT

[@68bobba2]

@@TheSleepyMechanic0524 -Yet the Street Hemi could rev to over 6,000rpm...Making it ACTUALLY about 460-470 hp

[@danielgordonsparrow6861]

bike or bicycle into the building of the motor hemi the eye^

[@ulose3489]

Camonly YeeaaaaH

[@MotorsbyShooter]

Eagle rods...are you guys out of your minds? I wouldnt use an eagle product in my lawn mower and I wont even let an Eagle product on my property. There are cheap parts and then there is Eagle products...that qualify to be located in the basement...which is way under the bottom shelf. An engine like this deserves Manley Pro or Carrillo rods along with JE pistons and file fit Total Seal rings. Nice video here, but very disappointed in your choices of parts.

[@RobertEmbrey-hm7yg]

You destroy a hammy‘s ability to make real power when you take away the compression the cylinder head chamber and intake and exhaust port size were designed around high Compression when you lower that to pump gas friendly it destroys the power

[@phillipholder5906]

Good ! But not enough.

[@moeshouse575]

OH MY. some one that knows the diff between a race 64 Hemi and a 66 street Hemi

[@Mr.mopar71]

Chrysler started hemis in '51 not '58.

[@flightestman]

the first hemi by chrysler was made in 1971 not 1978.

[@Cornfed528]

I am sorry Bill but the 1st Hemi built by Chrysler and put in a production car was in 1951 and it was 331 cubic inches. I enjoyed the video but some of the facts stated are not correct.

[@michaelfritsche4023]

No. Fire Power Hemi

[@freeskier175]

Wtf

[@YouTubeDoxedMyRealName]

Knows what he is doing! I don't lol.

[@scottweatherman3266]

I lived during the era of these cars doing well. These motors failed constantly, were extremely costly and used to get killed by cheaper mainstream wedge motors. Yes, you want to go billet aluminum, it might be a good way to go. However, this motor design will get killed by multi valve OHC engines.

[@michaelfritsche4023]

@@chadhaire1711 Blueprinted hemi right at 500 with factory parts.

[@michaelfritsche4023]

@@chadhaire1711 in the MOPAR group. Blueprinted build with stock parts . right at 500. Engine Dyno numbers.

[@chadhaire1711]

@@michaelfritsche4023 Right--on a dyno--which again will be no more than 430 in the car with muffler, air cleaner, belts, and smog gear if any. A stock 2019 6.4 SRT 485 horsepower is more potent and quicker. In order for that 426 to beat the SRT it would have to show 650 SAEGROSS on the dyno to beat the 485 hp SAENET SRT. Do you even understand the difference between SAE GROSS and SAE NET? All cars after 1972 are rated SAE NET. If it says 500 on nthe dyno you are getting 430/440 in the car.

[@michaelfritsche4023]

@@chadhaire1711 actually I'm 60 now. Went from a kid pumping gas in my dads CLARK station in the 60s& 70s to a Top Fuel Wrench in NHRA and IHRA. Shop guy of many titles building 10,000 horsepower TF/D engines. But possibly you know more than me...

[@michaelfritsche4023]

@@chadhaire1711 but anyway. A due respect. I've been drinking now a bit. We're cool.

[@joespeed1952]

Gotta love a HEMI. Gotta hate Eagle products. Why taint such a great engine with such low quality products?

[@TheHorsepowerMonster]

I've done a few builds (but not a ton) with Eagle connecting rods or cranks and never experienced an issue. Have you had a failure?

[@Justin-bz1dp]

​@@TheHorsepowerMonsterwat is the hp

[@tommyau2006]

331ci - 354ci - 392ci - 426ci................

[@68bobba2]

In 1966,when the Street Hemi came out, Nascar ruled that the Race Hemi was destroked to 404 ci...Didn't stop Dave Pearson from winning the Nascar title,but.

[@68bobba2]

And if you want to get picky with the 1st generation Hemi; Chrysler - 331,354,392, Desoto - 276,291,330,341,345, Dodge - 241,270,315,325

[@frfrpr]

Why ruin a show with music??????

[@tommyau2006]

+frfrpr lots of idiots do it

[@231mac]

You're using cheap ass (made in China!!) eagle rods in a vintage HEMI????? That's just disgusting...

[@ThePaulv12]

and they're probably better than the OEM by a big margain. Not everything that comes out of China is crap.

[@ThePaulv12]

231mac Well I have actually. I well understand that OEM Hemis already have premium cranks in them. I also understand that new 8 bolt cranks for Hemis in the range of ~ $1000 - $1500 from China are vastly superior to the originals esp in mettalurgy. For the street there is no reason to run a top $$$ crank and reconditioning a fatigued 40yo OEM crank is not anything I'd want to spend my money on. With respect, and I mean that sincerely, just because you say China stuff is shit doesn't necessarily make it so. To say all stuff made in China is crap is ridiculous.

[@231mac]

Then you should know that, especially with Eagle cranks, 1 out of, I'd say, 8 needs to be re-ground. And China is well known to use inferior casting methods. I mean, sure build a 302 or 350 with them, but a true Hemi?? And the materials and forging methods of the OEM Hemi cranks are not vastly inferior, even to todays standards. They were insanely well built, as were the rods, but the rods are extremely heavy. Now the block machining.... could have been better.

[@ThePaulv12]

Well, let me say re Eagle cranks needing to be reground, I'd say I agree with you. Another example is, even the highest quality cylinder heads on the market today need total disassembly. Many heads in the $3500+ range whether made in the US or China have been found with tight guides and non concentric valve seats. Almost all after market cylinder blocks leave a lot to be desired in the area of square decks, decks parallel with the crank centreline and the crank tunnel. It is not unusual to have to spend $800-$1200 on almost any block out there. You can't just screw them together and hope it'll be OK. Tell me then why would a crankshaft be any different? Also, I read somewhere recently that a cheapish stroker Hemi crank (in the range of $1000USD) is at least 100% stronger than the original OEM crank. That is considering the premium nature of the OEM unit too and not comparing a stock 440 forged crank (since 440 cranks fit Hemis and vice versa). Also worthy of consideration is the fatigue life of a 40+yo crank as mentioned. The stock cranks were some of the best in the business in their time, but their unit cost was probably nowhere near as expensive as even a $1000 crankshaft. You have to ask why. Volume is one part of it I suppose but Hemis were low[ish] volume engines anyhow and even allowing for 40 years difference in cost of living increases I doubt the cost was as expensive as an adjusted $1000-$1500. Chinese metalurgy in name brand cranks is good. Modern consistency is far better than 40 years ago - even considering Chinese quality control concerns. Many companies apply rigorous testing for quality assurance, but it is worth noting in some ways your arguement is valid, but perhaps ~ 10-15% better consistency in US made billets and machining. In other ways it isn't worth getting overly concerned about any of this because consistency issues occur all the time in human affairs - not just China. Companies do go out of business when quality control effects their products, but don't forget even Chrysler had big trouble with bearing caps in some Street Hemis back in the day. It seems Eagle are on top of their quality control. Some of their stuff may fail, but OEM stuff fails too. MB and their transmissions, Nissan and their appalling 3.0l TDI are a couple that come to mind. Some things are just not worth worrying about. I'd put an Eagle crank and rods in my Hemi. In fact I have an Idea - I'd like to get a 4.500" bore aftermarket Hemi block and get a 383 stroke crank made for it. The shorter stroke allows for an even longer connecting rod. The capacity stays almost the same as 426 too, but you get a shorter stroke. With a solid lifter cam and ~ .550" lift I wonder how it would go on the street. I reckon it'd be a lot of fun in an A body with a manual tranny and light flywheel.

[@231mac]

I was never saying to run the OEM crank. Especially due to its age, as you mentioned. But, a Chinese crank that's known to have issues?? Why not a Callies or Crower? My whole point is, why go cheap on such an awesome engine? And that's the whole problem I have with this build, is the guy just plain went cheap. It's like building a house with plastic nails in my eyes, lol