426 HEMI Cross Ram - Dyno BLAST

[@micahcastillo9113]

One of the tuning challenges of a crossram intake, is that your actually tuning two engines to run in unison. The left manifold feeds the right side of the engine, and the right plenum feeds the left. The plenum volumes are nearly identical. Two O2 sensors would make this a little easier. The stuck float in the one carb needs to be corrected before Nick can successfully tune this engine. That is why he’s having trouble with a rich mixture. 🤷🏻‍♂️

[@BucksSuperStereoWorld]

We all know that the Big Three used to underrate their V8s back in those days, but for that 426 to make 505 HP with just a single 4 bbl carb when they were rated at 425 HP with dual quads is proof (even though horsepower was rated somewhat differently back then), that's still a BIG difference. My mom had a 69 Roadrunner back then with the 426, dual quads, and the A-833 4 speed manual and she would scare my uncles with it. She said that it would easily pull the front wheels off the ground on the 1-2 shift.

[@jackwade7115]

sounds like an incredable mom

[@jeffreybrandes881]

Nick's horsepower rating is the same "gross" rating as was used up to 1971. He dyno tests engines without running accessories like alternators and water pumps. Starting in 1972, the "net" rating was adopted, and engines were tested with accessories. This, and lower compression ratios, contributed to the lower horsepower ratings.

[@Mo-Town_Auto_Icons]

It's crazy how stories get exaggerated. I've never in my LIFE seen anything "easily" pull the wheels off the ground on the 1-2...that's LITERALLY some fast n furious stuff!

[@Mo-Town_Auto_Icons]

Sound like Mom was fibbin just a bit!!!

[@minnesotatomcat]

It did not pull the wheels off the ground, it takes way more power than anything back in the day had to pull the front tires off the ground. Especially a roadrunner

[@meowerstationone3793]

Regarding Issue #2: Seems like Nick could use some real time feedback from the overhead camera. This is not the first time the overhead camera has picked up an issue, only to be discovered later in review. Another great show guys! That 426 is a beast!

[@stephenholland5930]

George will have to rig up a small monitor from a feed on the overhead camera to assist Nick.

[@closertothetruth9209]

7 years from a dyno isnt to be sneezed at, good thing you allow us to see it all warts n all , makes it interesting, we learn something and it shows us the reality of this kinda industry.

[@dcrasta]

3 legends in one video ! The HEMI, the Crossram, and Nick. Maaaaan take this thumbs up 👍

[@NicksGarage]

Glad you enjoyed it!

[@dcrasta]

Me and my friends always do. The MOPAR knowledge and timecapsules are worth it. Happy Holidays and I hope everyone has a safe and wonderful New Year. @@NicksGarage

[@Mogamboguru]

Hi Nick, this is Michael from Germany. i watched this video today in the morning (german time), and have been thinking since about the potential causes of the problems the Cross Ram-Hemi was causing you. In advance: I was an editor and test driver for the biggest european car- and motorcycle magazines in Europe, the german MOTORRAD, and auto, motor und sport mags, for 35 years, until I was retired and, hence, know a thing or two about combustion engines myself. When I watched the video, I noticed that the Hemi was bouncing and bucking wildly on your dyno, which I found rather untypical compared to many other engines you have been testing on your dyno over the years - including your own, personal 528 Hemi. But then I remembered two things. 1st: You mentioned that the Cross Ram Hemi has a forged crank. and 2nd: in a video about another engine you explained that forged cranshafts use to be internally balanced, while cast crankshafts use to be externally balanced, i,e, they need additional balancing via the crank pulley and clutch plate (correct name?). Yet, due to the wildly bouncing and bucking Cross Ram engine on your dyno, I suspect that this engine's crankshaft is out of balance big time - either because somebody tried to BALANCE the forged crank without knowing what he was doing, or because there is some other cause which throws the balance of the crankshaft totally out of whack. Why this is important, I will explain: The higher you rev the engine, the harsher it will vibrate. At some point, the float valves of the carbs will start bouncing on their seats, and will not prevent the fuel from flooding the float bowls anymore. The result: A super rich mixture. Yet when you rev the engine even higher, you will finally reach a point when the fuel in the carbs' float bowls wil begin foaming (this is repetitive. It will always start at the sme revs). And due to the foaming fuel, the engine will now suddenly be starved from fuel, and the vastly leaned mixture will whip the engine into a short frenzy. I understand that this may sound very strange to you. But this is exactly what I have met several times when i was testing tuned cars and motorcycles during my professional career in the past, mainly because some tuners were so enarmored with their beautifully prepared and tuned cylinderheads, that they forgot to check their engines for the simple basics. Yes, such things DO occur, and I have met them several times in my professional past. I only hope that I may lead you back to the path of success, Nick - but if not, feel free to ignore my self-aggrandizing rant entirely. I wish you all the best. Cheers! - Michael from Germany

[@nickpanaritis4122]

I understand. On the previous video on the same engine, with the 4 Barrel set up, did not vibrate at all. I had carburater issues. Thank you for helping out. Hello to Germany.

[@marcmo7138]

Seriously a violent transition from primaries to secondaries.

[@daledavies2334]

I think it was Horsepower TV that interviewed a Chrysler engineer from the '60's. He stated they could take any random.Hemi off the line and dyno it, and they all produced a minimum of 500HP. With production tolerances you have the average engine, some have a stackup of the poorest tolerances and some that were like blueprinted engines, where everything was as close to perfect as possible. What that indicates is the poorest made 500HP. What were the good ones. The 426 street Hemis were detuned race engines.

[@mikestackhouse9001]

Gremlins tend to creep in at the worst time and always want to set up shop. Great video!

[@yarrdayarrdayarrda]

Dyno operator is one of my positions at the shop I work, I am vigilant about having a look down the carb as I'm doing my initial fuel leak checks as it's not uncommon for a carb to flood over when a needle and seat hangs or a float level is too high. You'd be amazed at how quickly you can flood an engine with a big dyno fuel pump.

[@Mike62501]

And high fuel pressure causes problems too

[@brianwaldo2642]

Perfect, a land rocket with no brakes 🫣. Dang, reminds me of my youth.

[@savagenomore]

Nick I really enjoy watching you trouble shoot things and I could tell you were getting a little frustrated but as always you figured it out.

[@487joe]

Had a 69 Hemi Charger R/T had carters (factory) rejetted with 105 and shifted at 7200. Trophy still on my shelf. Great video like all of them you make. By the way, this was my daily driver.

[@tonyunderwood9678]

When things are right, if it's anywhere close to the factory "race hemi" specs, that engine should make appx. 600hp at around 6400 rpm. Ma initially published some specs along the way that showed this.

[@gersonhay984]

Can't wait to see the Hemi you were Unboxing. Thanks for the Music of a Hemi.

[@NicksGarage]

More to come!

[@mikedimaio1237]

That is probably the worse intake ever to have a fuel leak like that, it was only Nicks professional engine building and tuning that kept a backfire from blowing that intake through the roof, really sucks to not get the right number. I had so many problems with Holleys like that, I now longer run them, they are probably good for track only cars, I will never run one on the street again.

[@timmotel5804]

I haven't seen one of those cross rams for many years. Love MOPAR. Best Regards to All and Merry Christmas.

[@dannypeter6565]

Hey Nick and crew, you all deserve a well needed break over Christmas. Dont worry , we will still be there in the new year. Cheers Everyone

[@NicksGarage]

All the best!

[@BNforever2009]

Im glad you found the problem with the dyno

[@michaelmartinez1345]

Quite an interesting video!!! Maybe this monster engine overloaded the dyno to the point it developed a problem...If any engine could do that, this would be one such example...

[@scottsavinski9311]

Gotta love the Elephant on the Dyno.... Glad you got it figured out Nick!

[@danaglass5394]

Dana "60" Glass. Sorry you didn't get the full test that you wanted, but the fact that you push forward to make sure your clients are satisfied is why you're the best. Thank you Nick

[@spanky659]

I was 19 in the fall of 1974 and thanks to my older sister bought a 70 challenger RT 440 SIXPACK. Had finance the car through Cherryhill dodge for 1499.00 easy payments for me here in NJ. Great car 31,000 miles those were the days.

[@RichieCat4223]

48:32 That ceramic seal reminds me of the one in a Cat 3208 water pump.

[@kevinwoolmer5478]

Wow,what a beast. Best auto show on utube by far😎

[@acetomatocompany]

Back in 2016, my 454 was on a dyno. Cylinders 5&6 , the temperature would drop above 2500 RPMs. So we knew it was running rich in cylinders 5&6. It made 336 hp. So eventually I had a carburetor shop check an O ring for me. He confirmed the O ring between the metering block and the fuel nozzle bar wasn’t sealed. The hp after changing that little O ring went up to 556. After that, dyno test all engines.

[@zcam1969]

Nick that engine is a beast . in 63 you get a 413 wedge cross ram from the factory. i seen them on the street back in the day

[@topperthompson580]

The 426 Master Blaster!!!

[@milesstepanoski2410]

Did you see, looking each time the camera was on top of the engine while it was running, on the right side of the block was sparking, or shorting out, check it out you'll see it shorting out. Great content as always, Nick the great I say, showing the true mopar muscle engine, we in Australia in early 70's, our hemi 6 was lapping all the rest at Bathurst Mountain, until the first tyre change when the hot wheel nuts vanished and were not going on with the cold nuts, at the end the charger ended up 3rd, couldn't have a six lap all the v8's, could they!! Also, previously no budget was provided for the old 3 speed gearbox or the replacement of the front drum brakes, the chrysler ceo somehow couldn't account where millions of dollars went, however on the last race on the mountain the charger was given a borg warner 4 speed and disc front brakes, the cold wheel nuts and still came 3rd! But no more budget and got a bad narrative from the press, never recovered and closed down in 1980. Never back down, Nick. we love what you do, love from Australia.

[@4ondflor-old]

That motor is INCREDIBLE. I can’t believe the size of it. The cross ram seems difficult to run, but who cares - it looks awesome. I think if I bounced my hemi off the rev limiter I’d have to change my pants! What a video, thank you so much for putting this together. And Merry Christmas to the Nicks Garage community

[@fabieneldridge3414]

That has to be one of the smoothest running ever. It’s pulls are effortless. Great job Nick ! 👍🇺🇸

[@darrellsomers5427]

People like you only care how it looks lol not how it performs ,so buy you a tunnel ram you will look so cool

[@joeljenkins2876]

Man, that cross ram looks SAAWEEETTT!!!! Always great content from Nick’s garage!!! Great week, guys!!!!

[@scowell]

Caught that at 14:06... turned out to be an issue! Not the first time the overhead view has helped Nick.

[@leonardhirtle3645]

That must have been very frustrating. I’m glad you found the problem. I was watching the leaky carburetor on the video and was shouting at you to look at it. I know that is stupid but I get really involved in your videos because I enjoy them so much. Have a good Christmas and a happy New Year.

[@SavageEuge]

I said before nick needs a permanent monitor at the desk for looking down the carbs for carb leaks and checking accelerator pump flows.

[@buzzwaldron6195]

Also loose, turning distributors... gas or oil leaks... blowby... carb.s not opening up fully...

[@OlSgtLove]

DYNO MONDAY AT NICK'S GARAGE!!!!! LET'S GO !!!!

[@NicksGarage]

Welcome back Sarge. Always a pleasure to have you with us for the fun!

[@OlSgtLove]

​@@NicksGarage ALWAYS GREAT TO BE WITH YALL !!!! HEY GEORGE!!!!!!

[@mikechiodetti4482]

Glad to see you found a problem in the dyno and are able to fix it. I remember a 413 Mopar that had the long dual cross over manifold and Dual Quads. Days of 32 cents per gallon of gas and Sunoco "Dial-an-Octane" up to 100. SUN-Oil-COmpany......SUNOCO. Good one Nick.

[@stephenholland5930]

Nick ran of those 413s on the dyno earlier this year. It was out of a Chrysler 300J.

[@GHP-mr3gs]

ESSO....S-O....Standard Oil...The SUNOCO reference just reminded me of another oil company's name that a lot of people don't know.

[@buzzwaldron6195]

Sunoco 190 - 260 was available... SOHIO was Standard Oil of Ohio... Shell is Royal Dutch Petroleum... Also, Gulf Oil, AMEX, Clark Oil, AGIP Oil, Cities Service, AMOCO, Texaco, etc...

[@billjamison2877]

Always loved those cross-ram Hemi's Nick! Bill from Linglestown Pennsylvania

[@tjohnson9051]

What surprised me was the size of the absorber, it's smaller than a torque convertor. I thought with the big horsepower engines that run on there it would be a lot bigger. That thing is workin hard!

[@yarrdayarrdayarrda]

26:17 if you look at the fuel flows from 5000 to 5600 (assuming 1 line for each carb) there's a discrepancy which would lead me to think the secondaries on the carb connected to "Fuel2M" aren't opening until 5700, where the 2 flows are within balance of one another, much like they are below 5000.

[@nickpanaritis4122]

Good point. Having carbs check again for performance.

[@buzzwaldron6195]

Vacuum secondaries should be linked together so they open at the same time/rate...

[@stephenwest798]

I do believe the street Hemi's called for 10W/40 in the winter and 20W/50 in the summer. Least wise that is what my owner's manual said, and what I ran in mine.

[@eugenecastles7475]

Nick's Garage on a Monday afternoon, and a 426 Hemi with a Cross Ram on the Dyno!! I love how this 426 Hemi looks, shades of 1964 Super Stock racing in the NHRA. I first saw one of these engines during the summer of 64 at the drag strip. Anxious to see what the numbers will be on this impressive 426 Hemi.

[@nickpanaritis4122]

If only my Dyno did not let me down. I would have been further testing.

[@eugenecastles7475]

@@nickpanaritis4122 I figured something was wrong, when on the first pull the dyno went to 6500 rpm, even though you had it set for 5900 rpm. On the update, I saw that you had the absorber apart to fix the seal. I hope that this fixed the issue with the Dyno. The Hemi made some good numbers despite all of the problems you found. A very impressive looking engine that you don't see very often.

[@nickpanaritis4122]

...@@eugenecastles7475 ... I had replaced the Pump Seal for the Absorber. All good.

[@leelavoie6753]

This is one of COOLEST builds I’ve ever seen!! If it doesn’t perform to top HP, it sure looks the Part!! Better yet, it will deliver everything you could dream of!! 😳😃😃👍

[@michaelrostine1315]

That Hemi was screaming for vengeance. It was ready to jump out of the mounts and right out from the absorber.

[@nighthawk8053]

Okay ladies and gentlemen ,here we go! 🚀😁

[@brand-x7049]

You should set up a live-feed into the dyno bench off the carb-cam so Nick can see them in realtime.

[@rickyb2200]

Thank you Nick , I remember how it is having a little problem that causes aggravation like you had it's not fun. Maybe you got the Dyno Absorber fixed. Great video .

[@blinkie1523]

Greetings Nick, wow thanks for the honesty on this beaut video. That pull at 6100 sure looked beaut numbers Nick and I'm sure Jim will have a real sweet Hemi once Don fix's the carb. That next video sounds like it going to be simply amazing Nick. Great work with the cameras George as with out them Nick may not have spotted the fuel leak.

[@Chris-bd8nj]

Thanks Nick!! I love all the dodge hemi uploads!! Iv learned a bunch from you!! Keep em coming!! Have a good holiday!!🫡🤓

[@NicksGarage]

Thanks! You too!

[@ericball6000]

got here on Tuesday, do to no internet from a bad storm, all I can say about the 426 Hemi Cross Ram , Sparta , Impossible is Nothing, cheers.

[@thomasward4505]

I have two stroked out 440 engines and it really looking forward to the dyno test next week. One has trick flow heads the other Edelbrock heads

[@GriffonGrowl]

Can you tell the difference between the heads, horsepower wise, by seat of pants driving?

[@thomasward4505]

@@GriffonGrowl one engine is not quite completed at the Machine Shop

[@samuelgoodman2825]

Love the bellcrank throttle.

[@jesse75]

U control.

[@rodneybyrd9516]

That gigantic plenum is designed to RUN but tuning is always an issue. Even tunnel rams with a smaller plenum area can sometimes use a reduction in volume! Nice video and great work!!

[@1SeanBond]

Absolutely amazing & Beautifully shot. Sure enjoyed seeing that 426 Hemi but ran into some issues at 5500 RPM ... like the update at the end Ty Nick for your efforts & never give up attitude! Cheers! 🍻 friend to continued,Success,health,happiness. 👍🏼🤝🏼✌🏼💫

[@NicksGarage]

Wow! Do you watch in fast forward? That was fast. :)

[@zcam1969]

the floats in the carb are hung open its pumping fuel through the vent

[@mainiac4pats]

Thanks Nick and George! Happy Holidays from Michael originally from Maine! In ATL watching your videos and glad I am in the south. Really appreciate your skills George getting the right shots and angles. Nick intuition was right, the video proves that. Good luck with the water absorber, you’ve fixed that issue before. We all know you get there and find the issues with the tenacity of engine building, dyno running Sherlock Holmes! George you amaze me with the skills you bring to Nick’s dyno recordings.

[@windycityben4850]

Awesome camera work!!! Happy Holidays from Chicago 🙌

[@NicksGarage]

Thanks! You too!

[@61espo]

I’ll say it again, Outstanding! Thank you Nick for these fantastic videos! Happy Holidays to everyone at Nicks!

[@BigT27295]

Merry Christmas to Nick's Garage.

[@NicksGarage]

Thank you! Merry Christmas.

[@matthewwrice6044]

Thanks for another great video, Nick! This was the first time I have ever seen a Hemi with Crossram intake on a dyno and it was a joy to behold. Love to see the troubleshooting that you do, as well. Along those lines, it seems like being able to see the overhead view of the carbs, from inside the booth, would be super useful. Additionally, individual O2 sensors for each exhaust port would spot cylinder specific rich/lean situations like this very easily as well as aid in the tuning process. Anyhow, keep up the great work Nick and team!

[@nickpanaritis4122]

After video time. I went on trying to figure out the Rich mixture with dual O2 Sensors and had the same reading on both sides at WOT. Then looking at the camera we noticed a fuel leak in the carb at the moment we shut down the engine.

[@karlfbarsun7537]

Ask your resource for your limit chips for Dyno for new chips. Actually it is now sounding like the further into the video I get is that you need to have your Dyno recalibrated possibly. Otherwise the leak of extra gas in the one carburetor is setting it off. Actually engine starts shaking at the lower rpms before it takes off.

[@greggsvintageworkshop8974]

Great video Nick! Great camera work George! Thank you for the update at the end, and so glad things appear to be getting sorted out.

[@edward-x3s6f]

Merry Christmas to Nick and family and Mopar Lovers

[@walterfoster5682]

Mery Christmas to st. Nick😢and all your helpers from Walt in Melbourne Fl.

[@chrischiampo7647]

Thanks Nick And Great Job With The Camera Work Diagnostic George 😀😊😀❤️ Merry Christmas

[@GinoTassoni-fg1wg]

Greetings from South Carolina Nick & crew. Hang tough...those carbs are junk. Glad you got it figured out. Still Dyno room is the best.👍✌️

[@williamjones4483]

Nick, you really need to get a monitor connected to the overhead camera so you can see what's going on.

[@joeyg1170]

George, is it possible for nick to have a live overhead camera view screen at the dyno desk so he can see what’s going on in the carbs?

[@robertorhymes]

Damn son A Hemi plus a cross ram on Nick's Gareges dyno equals Monday fun Nick's Garage depletes the Monday misery by sharing muscle car history Before the engine is fit for shipment Nick is testing it with some cross ram special equipment Nick's Garage is a fun place to hang out especially when there's a Hemi with a cross ram about Can't wait to see if that cross ram gives the Hemi some extra clout Jimmy is in to witness Nick giving the Hemi the business it's not a boring test like litmus Big ups Nick George and Jimmy Merry Christmas

[@Musclecar1972]

I would like to see a cross ram setup like you had on the 300 earlier this year, and see what that would do on a Hemi, just for the heck of it, would definitely be something different to look at. I know Mopar never built one like it for the Hemi, but it would be cool to look at. 😂

[@dtomaz1]

Be a good idea to have an overhead camera with a monitor to watch the carbs.

[@Anthony-nw5zv]

Good video Nick, see you hopefully next week on the next video with the Trick Flow 440.😊 Take care

[@erichlausch9886]

Hello to Quebec from Germany 😉

[@NicksGarage]

Hello Germany! 👍

[@starv49]

I seen the gas dripping in the carb

[@keithharris7365]

Awesome show always a lot of good information thank you keep them coming and see you Friday

[@NicksGarage]

You bet.

[@michaelraddish7898]

Intake manifold is leaking on the head surface.big problem with hemi trying to seal them up.

[@michaelraddish7898]

Dyno is taking a major crap

[@guvsgarage]

Maybe add a permanent camera and live feed video screen into the control booth, so you can watch the carbs during each test. Great episode!!!

[@billdwyer7897]

That was fun to see the cross ram on the Dino , Have not seen one in a long time 😎👍🇺🇸🇨🇦

[@fd797]

Pretty scary watching that dyno let the engine rev free. Seems like a good idea to put a chip in it every time to whatever max rev you might want to go to, so as to not trust the dyno to do its job. A reboot sometimes 'fixes' these issues? If the battery was the problem before, weird to think a $30000 motor being protected by a $3 battery. I hope someone at superflow is listening. I hope it is the seal and you get it sorted out. I hope superflow is listening.

[@davidlewis3169]

Humble suggestion: You might want a Moniter to view an over-head Camera in real Time. You would have caught that immediately. "Elephant" is a great Nickname for that Engine...Its huge, and probably drinks as much. Love your Show Nick.

[@Sherlock067]

Great show Nick! hope you get the dyno fixed!

[@kwhite145]

Excellent Video Nick enjoyed it 😃

[@NicksGarage]

Glad to hear it! Thanks.

[@russabrams3982]

There is a filter on the inlet side of the absorber, over a period of time it gets plugged up, and during a test pull it will cause the absorber to cavitate, and the engine will overspeed. Easy fix , remove the filter, and back flush it. It will fix that problem. Keep up the good work !

[@rickschlosser6793]

Another unique fuel induction system by Dodge. Thanks Nick & George!

[@myleghurts3546]

Somewhere next Spring on a red light intersection, someone will find themselves with this beast one lane over....sucking all the oxygen from the other cars's intakes!!!

[@chrisjeanneret5091]

I seem to remember a video from a while ago with issues with the absorber. Wrote too soon, but at least my memory isn't failing me.

[@patstevens2959]

What a. setup!!!!!!!!!!!!!!!

[@robertsanders6463]

Well done again Nic. Keep up the great work.

[@mitchellferre1652]

I can't wait to see how the 540 with TFS heads performs !

[@stevelioliopoulos4902]

Greetings Nick and thanks for all the fabulous episodes this year. Merry Christmas Palikari from Adelaide Australia

[@NicksGarage]

Thanks Steve! Merry Christmas.

[@zcam1969]

does Santa Claus stop in Australia . take care of those Kangaroos

[@SeanJoseph-s2s]

Great job Nick ....thank you.

[@paulbrooks9327]

Great work Nick 💪💪👍

[@bandagefreak]

Nick, you've got the patience of a saint - I'd have been throwing tools around the place and blaspheming to the heavens if I was in that situation!

[@rockabilly46]

That is one impressive set-up. Thank You Nick for sharing with us. Very entertaining!!!

[@gulfy09]

Well thanks for the update.

[@mitchburk5112]

Would be interesting to see one of the "bathtub" Nascar single 4bbl intake on the dyno

[@jesse75]

I wish Nick was close by. I'd like to put my engine on his Dyno.

[@moparedtn]

Ah, the ol' Rat Roaster intake. Never had much use for them on the street, but they work great at the track... Merry Christmas everyone up there from everyone down here, y'all. - Ed on the Ridge

[@NicksGarage]

Merry Christmas Ed!

[@jaybritt6275]

LOOKS LIKE A RACE HEMI * WITH UPGRADES. BEAUTIFUL SET- UP NICK .

[@dinadaughtry8993]

Merry Christmas Nick and crew, Skittles said he wants a Cross Ram Hemi, I've tried to tell him that it's to much for the 73 Charger he said no such thing as to much, he's a hard head for a bearded dragon, maybe you should tell him but you would probably take his side, keep warm and enjoy your Christmas

[@pcspecialistpdx]

I noticed the fuel running into the carb the first time he shut down the engine.

[@michaelmerta8956]

All for me comes to my mind, holy moly 😦😮

[@shakerman55]

I would set up a live feed from the overhead engine camera to a laptop so Nick can see these things in real time instead of after the fact. Not that hard to do. 😁