I was 11 when this Hemi first hit the streets. HERE WE GO!

when I see a 426 Hemi on the dyno, I think of Nicks 1st video of the keeper, way back in 2016.

Yes...Germany is on Board 👍👍👍👍👍👍

Man those Chrysler boys new how to build a motor back in the day . 👍🏻💯🇦🇺⛽️. A legend of a motor .

That BEAM of LIGHT shining through the smoke in to that HEMI.... How cool is THAT!!!!!!

Hi Nick! You were expressing concern about the low oil pressure at idle. In my experience, hot oil pressure of approximately 20-25 psi at idle may be a result of hi-performance anti pump-up hydraulic lifters. As soon as the accelerator is cracked open, the oil pressure goes to acceptable levels. The oil pressure variance can be valuable in a couple of ways! The high oil pressure part of this lifter only allows for the maximum lift without going to the point where the valve is getting pushed to far from the seat in case of a oil spike maybe caused by a stuck oil pump check valve. Another reason I like the anti pump-up hydraulic lifters is they help with the stopped idle performance that a high lift long, duration profile cam may negatively cause at low rpms. The high rpm value of performance cams still seem to keep their advertised value with these lifters as well. The lower rpm idle which can be of value when it comes vacuum operated items, lower stall torque convertors, brake drag, etc. The lower oil pressure in these lifters may have a slight ticking sound when idling, almost similar to a solid flat tappet cam. The other bonus is there usually a lot less valve adjustment periods that may be needed for most solid lift cams. High volume of oil flow at 20-25 psi, at idle should be more than adequate as long there isn't a problem oiling the top end of the engine such as the rocker arm assembly. In my opinion, oil flow volume to critical oiling points of the engine is more important than high oil pressure. Oil volume also takes less horse power to drive the oil pump at high rpm. Good luck with this awesome Hemi!!

Dr. Nick and his hemispherical healing

A Monday afternoon, and the broken 426 Hemi is repaired and on the Dyno, and running a single 4bbl. I'm anxious to see what numbers this setup will make. I'm guessing around 500HP, and maybe a little more torque. Always happy to be here on Nick's Garage, the best channel on KZfaq!! Here We Go!!

One thing i have notice since Nick got the Thumper Carb ...it always seems to perform very well !!! Easy to work on and i love the sight glasses to check fuel level in the carb . Very nice carb . Hello to everyone!!!

Customer get at least 3 videos on his engine I bet he’s happy …. I’ve watched many of nicks dyno videos and never knew he had a back window in the dyno cell until I saw sunlight on the break in smoke from the paint lol

Excellent video, I’m old school, just can’t do my own work anymore, but I really appreciate your attention to detail, it’s what makes the difference between a good tuner, and a great tuner! 👍

You've got a hell of a show on here things I used to do back in the day

I have one more 1970 hemi left , other then the original 16 K one in my superbird , came out of my cuda , had 21 k on it in the day , blue printed and balanced 0 miles now.. interested ? here from MA

Wow that was pretty damn good Nick at just over 500 hp but cant wait for that crossram manifold & two four barrels to see what they make, great video Nick & George thanks.

Nick is the Bob Ross of Mopars

It's 42° outside right now in Chicago. And it's supposed to get 49 to 50° by this weekend. We don't get the winners no more I don't know why winters

As always Nick is an Humble/Person/Mechanic and knows what he is doing👍

Yeah Nick that’s a failed lifter I’ve had a lot of problems depending on what brand you get for hydraulic roller lifters, Johnson seems to make the best that you don’t have any real issues with, I’ve had issues with morel, comp, lunati, when they bleed down that fast that’s a defective lifter

Seems to be a very common thing anymore with hydraulic roller lifters not holding oil. Seems to be almost as common as new flat tappets wiping themselves out

5,800 RPM with the stock rods is childs play, I ran 7,200 in first gear over and over for years.

Nick and George, excellent Monday Dyno Day !!! Enjoy watching Nuck work his magic on that 426 Hemi . Love to watch Nick just flow through the tuning process and correcting issues . Another get Dyno Monday !!!!

Hi Nick and crew love the channel. I am headed to North Carolina in the morning for my Dyno appointment on Wednesday. I have a 426 Hemi with a 1964 crossram!! I sent you an email

Evenin Mr George an Mr Nick!! Enjoy the week!!

I hope there will be a dedicated episode for the black Corvette.

Good looking intake.

O.E. rated @ 425 hp. NHRA refactored them @ 475hp for stock class fairness. (Other engines were also similarly up - refactored. EX: Buick 455s's)

*The black valve covers look good on the orange block and silver intake manifold.*

In 1960 four, they came with an aluminum manifold. They didn't come out with a magnesium h p two until on nineteen sixty five nick

I had to go to Quebec and back wensday I couldn't believe the amount of snow that was falling and we still have none by NiagaraFalls Ontario

I got a laugh when Nick used the old Gizmo terminology.

Best vehicle in Nick's garage that we hardly see is that white Ford ranger..

It amazes me after all these decades of building the same basic design that even on this performance oriented Thumper Holley still hasnt come up with a way to change jets from outside the metering block instead of having to take the whole carb apart. I had an early seventies Opel Manta Rallye on which I had to replace the junk Solex two barrel carb with a MUCH nicer more modern Weber aftermarket rig that had jets you just unscrewed from the outside and screwed new ones in took five minutes, no need to drain fuel play with gaskets, bolts, fittings etc its was one of the easiest to tune carbs ive ever seen and it even came with two extra jets as options. Holley already has externally adjustable floats and being able to swap jets externally would be the perfect companion tuning feature.

This is the engine that should have been available in the Imperial. No roller cam, no headers with max torque at about 3500 RPM.

Dr. Nick, can not wait for part 2 with the cross ram, stay warm, cheers.

That is typical to comp retrofit hydraulic rollers. I will not put them in to any BB (or Hemi) engine. Sooner or later you will have problems. Have disassembled them and there is a steel plate with small holes in side that tends to split. I have converted several to mechanics retaining the hyd cam, just using very small lash like .004-.006".Works good.

I am a ford man but i love that Hemi

Already snow in Montreal. Here in Toronto nothing but rain

Just in the process of having my twin 354 Hemi’s redone for my 1957 33 foot Chris Craft Futura boat I feel the engines are Iconic and want to keep them original to the boat They each have twin four barrel carburetors also one of the engines is reverse rotation I am from Western Canada, any advice on my build would be greatly appreciated Thanks Jim

That valve head sure went for a ride!

That crossram.. 😍😍 Can´t wait for part 2!

Best way to get through winter is, don't count it by months or weeks...count it by paydays, nothing goes by quicker than a Payday

It's Tuesday in Melbourne Australia 🇦🇺 35c just cracked a cold beer and looking forward to this episode thanks Nick

What a Super Cool Build. From what this started out to be…dropped valve etc!, the cross ram should be lots of fun. Can’t hardly wait. Great job guys!!!

Hemi Powered Monday is a Good Monday 👍

It was great to see a dyno tune done. My sincere congratulations on a great part 1.

Every time I watch you change jets to make it run a little richer, I'm thinking to myself; why not just try installing the air cleaner? If air cleaner makes it run a little richer, then that's how it will be when it's installed in vehicle anyway... Although, I like the open throttle view down the carburetor as well, that is pretty cool.

I have subscribed to 3 automotive channels. Glad i found you ❤️

A stuck needle valve will really mess you up! Its very good to know that im not the only one agravated wt a hyd roller! I thought it was bad lifters

It's it's alive....Looks like another HEMI Monster maybe with the Crossram setup.....Thanks Kick & George the camera guy 👍 Old stinky 🦨Shoe🇺🇸

The mighty hemi! One of the few engines that had enough air flow to get it in trouble. 425@5000, 500@6000, 575@7000. How big are your kahoona’s? I’ve heard stories of 9000+ rpm passes over and over again. I knew the late great Bob Reed, he lived 20 mins from me, I visited his shop several times, he dumped the clutch north of 5800. Bullet Bob had the kahoona’s the let the mighty hemi scream! Look him up!

Im thinking of a 426 Hemi in a 69 Chrysler 300 convertible but with a single Carter AFB and yea, its simple, a good 550hp and 595 ft lbs of torque. Hydraulic roller cam is good and roller rocker arms. The car will be a late summer and fall highway cruiser, will bracket race her in the beginning, just to see what she will run in the quarter mile. Should be a good mid 12s. Especially with all that weight and running 3.73 gears.

I wouldn't mind seeing this 572ci on a Whipple. Very nice! I wish I had your job George! :)

Giasou Nikola, Great talking to you last week it is always a pleasure talking to you. I feel for you buddy doing all this great work on your own. Here is a idea, summer in Canada, summer in Greece open up a Muscle Car Cafe with die-cast, books & engine parts & a TV constantly playing muscle car videos where all us muscle car lovers can come together in Greece & share stories. Congratulations on saving yet another Hemi so it can rev again. Like you & me we don't know how much longer we can keep going before we stop doing what we love. I was thinking if Chevrolet with the L88, LS6, ZL1 these are pure factory race engines all used a single carb & seemed to run okay. Maybe a single carb Hemi isn't a bad thing. Like you say Nick. " Keep It Simple Silly " K.I.S.S. Regarding the oil pressure since you put me on Lucas Oil there is nothing better. Put Lucas Oil in my Hemi & no lifter noise period. Love Lucas Oil it is the best hands down. Are you still using Lucas Oil Nick, best advise you gave me. Stay warm I know you loath winter. Great video can't wait to Part II. Great camera work George always on the money for angles. Cheers Louis Kats your number 1 Fan in Melbourne, Australia 🇦🇺 🇨🇦

You MUST back every run up! No exceptions.

As soon as the Thumper Carb was put on as soon as it fired I thought the engine just woke up.

I love when nick puts on a hemi I run the video on the big stereo to feel the cam and the power. Lord I love it with a passion. It’s like you’re there. That cross ram will get 525 to 550 easy.

Hey Nick, growing up in Nova Scotia, I saw 318, 360, 383,440cid engines, but the 426 was special, and you get to work on these classic mopar engines! Great video Nick! you are a mopar guru!!👍✌

Fantastic video!!!! Nice to see old school muscle struttin’ its stuff!!!! And a hemi can strut like no other!!! Great week, guys!!!!!

George/Nick Last video you said the dyno cell is reinforced concrete, bullet proof glass, and filtered air in. But the side door is always open where the engines get wheeled in. Why is it so? Shaun, Mt Gambier, South Australia. 👍🇦🇺

Yasoo palikari. Here we go again.

That tool appears to be a spark plug boot on a long screw driver shaft , good Idea , I use a piece of 3/8" hose That Hemi is a treasure , Wicked cross - ram Dyno test coming soon ... Thank you for the Video Keep 'em coming !

A Fantastic view Nick! Appreciate your efforts and quality content friend Ty, luv&peace 🤝✌💫

Love the look with the Cross Ram intake ,

Well, that was more fun than a barrel of monkeys! 😊 Nice setup and tuning. With the Cross Ram setup you should be able to get 550 HP or close to it. That's more than just a cruiser, that's a crusher.

Thanks for watching? Thanks for sharing it sounds great.

You can’t use a heavy oil with a hyd roller lifter . No 20w50. You need an oil with a centistoke of 15 or less at 100 degrees celcius. Valvoline VR1 conventional 10w30 is good, Driven HR5 10w40, Castrol GTX 10w40 conventional. In the intro to your video, with the Thumper carb, the secondary blades were a long way from being wide open and 90 degrees to the throttle bore. Either throttle wasn’t opening all the way or someone messed with the secondary link rod.

Great Music Selection George.... So Relaxing....

Good job reviving the ultimate Mopar engine.

Hemi Rockers- that’s so cool. Thanks Goerge!

Low oil pressure actions: 1. Change the oil and filter again. You may have knocked a bunch of debris loose and into the filter. 2. If oil pressire still remains low, especially at idle, then change the oil pump. I had to do these steps when I rebuilt a Ford 429 I found in a junk yard. 20 years later that engine is now in a boat, providing lots of power.

Thank you guys for making this awesome video!

I am seeing a lot of smoke blowing out of that rocker cover (passenger side)!😮

Awesome show a engine repaired and and running strong again my guess on the cross ram setup is 40 more hp

Felicitaciones ! espectacular video. Saludos desde Argentina !

If you were a brain surgeon Nick your attention to detail is, incredible I know that I would live under your skilled hands.❤

It’s cold but Nick warmed us up with this fire breathing beast. Can’t wait to see how it does on the cross ram intake! George I saw a perfect photo op, around 30:32 Nick is in front of the “here we go” on the door looking at the camera, what a perfect poster to sell in front of a hemi! I’m buying one!👍 Just an idea.

Nick you have that engine dialed in ! i am impressed at how smooth it revs up. i thought that first carburetor worked but i am not a perfectionist .the low oil psi is a major concern !

I was watching that oil pressure and saw that as it hit the higher RPM it would make it to about 64psi and drop to close to 60psi, before Nick let off of it. So it was losing oil pressure at high RPM, as well as dropping to the lower 20psi range at idle. Something is amiss.

What is the big fuss about 20 psi . oil pressure at idle, that is normal. The service manual says a minimum of 4 psi.

It's going to run amazing all your clients should start switching over retrofit hdy roller camshaft and roller lifters and roller rocker arms now the less friction for the engine the better. The engine runs and idles

Can't wait for the next episode! Music to my ears! Thanks guys!

Dana "60" Glass. Thank you Nick for bringing this once beaten elephant back from the dead. Can't wait to see the results of the Cross Ram. Great video action of Herb McCandliss "Mr. 4 Speed" running the Cross Ram HEMI in Pro Stock in his '70 Duster for Sox & Martin on You Tube.

I'll say it now. It's hard to beat a good intake/single carb setup. (Providing its correct intake and carb for application)

I really like your choices of background music.

I don’t know what it is but those thumper carbs seem awesome. Hoping to get my hands on one one day.

lunati retro roller x303 cam .542 lift 286 duration 302 ford small block. i have stock 351 heads needing higher spring pressure. floats at 5400 rpm. but didnt affect lifters probably needed air out of the system.

It never ever gets old watching you on the dyno Nick. I just wish you could run up my engines. I have a 331 in my mustang which I have no idea what it makes. The Cleveland I have been working on will be ready to run soon too. No idea what it is going to make either.

Hemi Heater works well Nick!! George another great video 🙏😁

Only was able to view this today (Tuesday) but it was worth waiting for.

Hello Nicholas, Great show and attention to detail on this run. Your knowledge on these engines always impresses me. I never thought of no other than you on my 426 build. I am glad that it is there. Also, you are a cool and modest fellow. Thanks for the chat this morning. Kocan. Thunder Road!

Great content thanks for sharing

What did I just hear? Nick installed headers because he had them??? What other surprises are in store? Guess we’ll have to see.

That one debunks the old myth that a Gen III Hemi only makes power and not much torque.

Hi Nick and George! I sure enjoy your videos of everything Mopar!

I was beginning to fear that we weren’t going to hear the rest of this story but now I’m smiling. I hope Nick can get the rest of the bugs out but this engine seems to fight him at every turn. Good luck with the cross ram setup. 🥸👍👀✅❗️

You didn't mention the CFM of the current 4 barrel carbs, the first, then the "Thumper carb" you installed. It will be interesting to see what the two cross-ram carbs set up will provide for fuel / CFM Air. Good stuff, Thanks Nick.

Thanks for that lesson!

Really enjoy your show Nick !!

I love your experience and expertise on the gas engine you are a joy to watch it is like a artist at work my friend. looking forward to doing business with you later

I have the whole drive from that that car , nothing else is rebuilt though 4 speed , totaled the car in 72 , these days i would have fixed the car in a heartbeat lol I own a 80 k sq foot body shop ..lol who knew :)