JUNKYARD TURBO AMERI-BARRA-THE OTHER GUYS 4200 ATLAS GETS BOOST?

[@shoes121255]

Lime-swap offers tuning and harnesses for the 4200 and emtechmotorsports has bell housing adapters, flywheels and oil pans for 4200s if you're doing engine swaps. Just posting because it might help somebody

[@richardholdener1727]

thnx

[@justinlee2330]

I greatly appreciate it literally solved half of my problems

[@shoes121255]

@@justinlee2330 post a video when you get it going!

[@K-1.0.1.0]

There’s way more than that now too! Never a better time to swap a 4200 than now!

[@upstategearheads]

The oil drain through the fill cap might be the best thing you've done yet Richard!

[@richardholdener1727]

ssssshh-don't tell the roadkill guys-they will copy it

[@Hellhorde.]

@@richardholdener1727 kzbin.info/www/bejne/f2HVeZ9-hd9sZ9E This guy did it first a year ago.

[@aubreyrowbotham1909]

Thought that was a no go thing to do? My impression is that the oil doesn't drain quickly enough from the head when you ad excess. Maybe another reason your plug holes were filling with oil. Obviously the seals are toast but I couldn't see that helping it.

[@flexall7408]

6k rpm and going up in hp. We need more cowbell

[@BEANS-O-MATICtransmissions]

Must Have More Cowbell !!!!

[@BucksSuperStereoWorld]

I can't hear it, needs MORE COWBELL!

[@timothyevans4323]

I got a fever... And the only cure... IS MORE COWBELL!!!

[@b.c4066]

Yeah, I've got a fever too only cure is.. more cowbell. Get er done Richard Holdener!

[@blaqlabspodcast5816]

And probably a lot more valve Spring pressure in rate

[@brandonpayne1207]

I really hope this help fuel some aftermarket parts for this and it's smaller engines. Too bad it's YEARS after this motor came out and probably not gonna be a huge revenue stream.

[@blaqlabspodcast5816]

Oh you would be surprised. There are alot of supras, is300s, other i6 are getting the atlas-m+Ar5 driveline swap because 2jzgte and v160s are too expensive to replace and when you do find one its all trashed. I'm going this route later this year on my is300. Ill sell the 2jz to a fanboy and call it done. 😂😂😂📞📞

[@altruismfirst6489]

@@blaqlabspodcast5816 Atlas heads flow so well, the block and heads are so light vs cast iron so will be perfect for any streeter wanting more hp and tq at lower psi than any JZ can achieve so great choice. Im even thinking a great replacement for diesel 6 toyotas that are so overpriced junk. I have looked at the Toyota HZ engine which have 94mm bores while Atlas is 93mm bore and all the studs match up, oil and water can be matched with oil feed re-routed using fitting and a copper line and heads converted to Belt driven using a block off plate above the front cam caps, all doable. Then would need custom pistons, rods and ready for boost using shorter 100m forged diesel crank but 1mm larger bores can only be a good thing. That would cost the same as buying and rebuilding a thrashed Jz motor or rebuild price of a HZ stock motor but would Troll Toyota "JZ" fanboys to the grave with 4.2 "HZ" as these engines are boat anchors yet still fitted to latest Cruisers for last 30 years.

[@voidisyinyangvoidisyinyang885]

These vids are my excuse to stop people from complaining about my TB.

[@toddthezondalover645]

​@@blaqlabspodcast5816I was thinking the same thing. I wanted to go with a JZ or 7M, but I didn't for the reasons you listed. Going this route bc a V8 doesn't fit well in a 190e.

[@notme8121]

I like this test a lot because you started the dyno run at 2500 RPMs and it's impressive to see 350 horsepower at 2600 RPM

[@kensmechanicalaffair]

Like a pickup truck.

[@chublez]

TQ*

[@al73r]

I love this series - such a nice change from the LS/LT

[@BUILTOFFICIAL]

I wanted to do this swap on my current build but couldn't find any info on it and got intimidated.. sooo stoked for this

[@tommylong2151]

Keep it a surprise for everyone👀

[@andrewnelson3733]

A lot of swap info is at nivlac57.

[@ericb562]

Loved the 4200 in my Envoy, torque from 2000 to 4500 was flat as a board. Shame GM never put it in full size half ton trucks.

[@kensmechanicalaffair]

It sure was flat.

[@smokebombkiller25]

I’d love to see a twin turbo setup like what was planned for the Trailblazer SS before they decided to drop a LS2 in it.

[@ChurchAutoTest]

Wouldn't mind chipping in to help Richard get some better video and audio equipment. This channel is too good for 720p only and blown out mics. Anyone else with me? How about it Richard? Couple hundred of us chipping in $10-$20 each could really improve your equipment.

[@richardholdener1727]

what components should i look at? mic is an easy fix-just have it in the console room-I also have a 70D that I did a lot of filming with but the phone is so much quicker

[@ChurchAutoTest]

@@richardholdener1727 TBH Richard its been awhile since I did any serious media production, so I'm out of date. I know a lot of better media outlets are shooting video with digital SLR replacements these days. Sound wise you might start looking at good mics for high dB recording, which would probably mean some good mic covers along with some pads on the inputs. Before the pandemic we used to a lot of recording sessions on the dyno for Microsoft, EA, Activision, etc. for big automotive video game sound effects and those guys had to tailor their mic setups to the high output nature of loud exhausts. If you're recording from outside the dyno cell, you could also look at using contact mics on the windows

[@kensmechanicalaffair]

I'd be down.

[@tragicnomadic]

Rick flair style now! "woo!!" 4200 gang

[@rscalliwag07]

Nivlac57 has amazing videos with everything you need to know about this platform and how a stock bottom end (from multiple different engine samples) can go up to 800hp at the wheels.

[@seantindall6641]

Gosh dang, to hell with modding the, gto the trailblazer bout to get a turbo setup! I'm dying over here lol!

[@James_WTFox]

I used the 3/4 reach br7ef in my turbo L83 silverado I built versus the $20 per plug iridium’s. I had zero issues running these plugs for several thousand miles yet there’s a lot of people who think they will cause havoc. Glad to see you test the change in the type/reach of plug. Keep up the great work!

[@moline800hdyup4]

I literally have to turn my volume down to nothing to watch what should be a regular guy talking about engine's, don't get me wrong I love what you do and there awesome to watch and learn , you just get SO LOUD AND EXCITED !!!!

[@richardholdener1727]

IT'S BOOOOSST!

[@moline800hdyup4]

@@richardholdener1727 that's all you have to say ?!?!!!

[@dantribby199]

Inline six engines have such flat torque curves. Why (besides packaging) did we stop using these again? They are the perfect truck motor. Torquey for thier displacement, simple, naturally balanced, one head so less gaskets to fail. I think we are really forgetting a hidden gem.

[@chrishansen7004]

Hopefully this brings some aftermarket for the ol' 4200, the most iconic engines are inclines 2JZ the Barra the ol' Ford inline 6's Cummins etc it was absolutely foolish for nothing to have been done with these engines I really don't know why the big 3 isn't trying to bring back more inline 6 engines

[@shadowopsairman1583]

They Tried in 2000s especially Chevrolet. They just work with Turbo 4s, V6 and V8s.

[@JimBronson]

More difficult to package than a V6.

[@ralan350]

My guess would be packaging a in-line six is longer than a V8 and considerably longer than V6

[@kensmechanicalaffair]

It's so strong.

[@blaqlabspodcast5816]

It's harder to maintain accuracy over distance so if you have a in line 6 the stack up on the tolerances starts to become a real problem. . It's just quite a bit cheaper to make v engines.

[@hanmilife]

Wow. Very impressive. They were great engines in stock form and looks like they are awesome when boosted. Great video!

[@fooligins8722]

Over 500 hp on less than 10psi is wild, these engines are arguably better than an LS, and thats one of the older engines with smaller ports and valves, if it was an 06-09 head it would really shine

[@jayburrough4308]

I think this engine needs it's own name and not compared to anything else because I think it set the engine back from companies getting on board to make aftermarket parts for it . Yes I think it's a great engine and there's a few guys out there putting in the work and they have come so far and finally getting notice so I don't think it will be much longer we will see great things from this engine because it's already happening. Good luck guy's

[@summerrancher8044]

15 years ago, GM had a concept trailblazer that they build with a Holset they pulled off a Dodge/Cummins. I don't recall if it was a HX/HY35 series or the HE351. I suspect the latter. Was a fun ride and would break all 4 wheels loose if you brake boosted it.

[@jlsracing997]

I would like to see you put a velocity stack on the inlet of the turbo and see what that's worth. You should see more HP and boost as I have seen happen in a magazine test. Love what you do .

[@richardholdener1727]

I'VE DONE THAT ON CENTRIFUGAL BLOWERS

[@cvytnioy56dvfuj4g7]

Up the top of the final run looks like valve float to me. Aussie Barra does the same thing, Replace the valve springs, close up the plug gaps to 0.022"and get a bit more timing in the bottom so it comes on stronger. It is looking like a great engine. Good job.

[@Shane-Singleton]

Glad to hear that you're going to put some ring gap in it. That was the one thing I was wondering during most of the video. Kinda makes me want to buy a Trail Blazer and see if i can shoe-horn a turbo in there somewhere.

[@blasthammer1806]

take out the wiper fluid tank and there is tone of space there i currently drive a 02 blazer

[@williamhutchins479]

Rear mounted? 🤨

[@SupraHenry]

This is cool. Would love to see these in older trucks. I mean LS motors are so common and sound good but there is something about a i6

[@scottinWV]

Yep. It would be cool to see an old C10 this and a good O/D auto.

[@wil8115]

even better numbers with a '06+ cyl head. then valves and porting.

[@Christdeliverme]

One of the best series yet.

[@tylerandreotti3785]

Seeing an “Other Guys” episode on the toyota 5vz-fe engine would be awesome

[@andrewnelson3733]

The Stude went 9.99@132.9 with a 2004 engine, unopened longblock, 06 intake cam, valve spring, fabricated intake and exhaust, 19 psi boost. The Fairmont went 9.98@134+ with a 2008 engine, boneyard stock, stock intake, factory exhaust manifold, 14 psi boost, 59MM turbo, shifting at 5300, launch with 3 psi, third pass on car. Both have a lot left in them. The current tune ups are very conservative.

[@TheeAbstractHero]

Just to clarify, Calvins studebaker had an 04 engine, 2006 intake cam and valvesprings?

[@andrewnelson3733]

@@TheeAbstractHero yes

[@theldun1]

My 2007 trailblazer is running this little beast and I love it.

[@anthonysantiago1999]

Had that engine in 2005 GMC Envoy, loved the power it produced back then even with that Heavy SUV. It would be interesting to drop one in a 1st gen Camaro or Nova.

[@kevincantrell5946]

The deck height on these is so tall that it won't clear most passenger cars without a huge cowl, but it's been done. There's some videos of a Gen 1 Nova wagon here on KZbin running a turbo 4200.

[@BEANS-O-MATICtransmissions]

I gotta say, I'm soooo excited to see where this goes !!! I hoping for over 1k, there's no reason it shouldn't that i can see, especially since it's been done MANY times with 2jz and other I6 engines.

[@chuckfiero]

It is nice to see more than the same old engines being tested. Keep up the great content! A personal request for a junk yard motor to test would be a GM 3900 60* v6 as I plan to put one of these junkyard gems in my Fiero which has the old 2.8 version of this motor in it.

[@Dayandcounting]

Just put a LS in it, will be cheaper and more powerful.

[@chuckfiero]

@@Dayandcounting I don't want an LS which is why I like seeing these other guys videos. Would also not be cheaper not even close.

[@kensmechanicalaffair]

@Yeah Right This is the perfect time to enter the car scene, simply because it's full of sheep.

[@stumpy259]

Well Richard I thought I knew what I wanted to put in my 1950 Chevy. Now I need to get a 4200. Lol

[@thinkingimpaired5663]

Definitely worth watching And i'm looking forward to your next dyno run with the Ameri-Barra. It's good to know that with not much boost that you're getting great numbers.

[@EricErnst]

2:03 . I know it's a short term "get it running" situation, but guys, don't use these cheap butt connectors. Get decent heat-shrink butt connectors and you'll be a lot happier with the end result. Especially in an engine bay with moisture and road spray. Keep up the good work Richard. I love the other guys!

[@richardholdener1727]

I USED MIL-SPEC BUT CONNECTORS

[@button-puncher]

11.2% more power running E85 vs a perfectly running gasoline setup...very nice! Hassle of visiting the gas station 33% more often is worth the gains.

[@andrewsutton7727]

Wow! Great work Richard! Just amazing what you've done with this underrated motor.

[@coolshookieboy91]

Oh man oh man oh man! I love this engine! Now i want one even more!

[@lifeonadime4703]

Iv been wanting a "trailvoy" for several years and this makes me want to just go buy one lol. Definitely can't wait to see more on this one 💪

[@bobqzzi]

Very cool. I'm thinkingt he reason the NA version didn't respond to the headers is because the cams are so tiny there isn't much wave interference. My dad had an Envoy with this engine and it was an impressively good truck motor

[@zapa47]

This series has been every bit as good as I had hoped.

[@DTGTDetectingTheGoldenTriangle]

The name "barra" was a code name for both the 5.4l v8 and the 4l inline 6 for the "BA" series falcon. The turbo 6 was actually code named "GUL" as in seagull because it would shit all over everything 😂 facts from a ex Australian ford mechanic 👍

[@jr78racer]

Loving these other guys videos

[@richardsmith-qy6vl]

I seen a video where a guy pulled his LS out of his late model camaro and put a 4200 in it I didn't realize these engines made this type of power well I think I might swap one into my jeep wrangler when my engine gets worn out.

[@shoes121255]

Can't wait for more cam and a ported head. I'm curious if you'll pass 700hp with that and 12psi

[@markbremmer8642]

FasterProms guys are porting a head for this size of engine, for someone up in the NE.

[@blaqlabspodcast5816]

I honestly think if they had Better crankcase venting and much stronger valve Springs And ring gap would have been able to make over a 1000 on it.

[@jameshall4385]

Bad ass little motor and there are a ton of them in the junkyards

[@craigdoesthingswithhissons]

This in a t bucket That'll be nuts

[@Tay675]

Crazy power at lower rpms. Very nice

[@mr.pineapple7620]

You should check what changing the valve timing does with the turbo. Might have some interesting interactions

[@mikeoswald15]

Nice torque curve. I'd really like to see a turbo on a 2.4 ecotec. Not a popular engine nowadays but if built like jasper engines does, with good piston/ring setup, a boost in low rpm torque for these would help my '15 equinox get out of it's own way!

[@Realtime1501]

Carl brunet runs an Ecotec well over 2000hp in a factory block

[@collinator68]

it would be very interesting to see a compound turbo setup on it

[@daviddavis3619]

The 4.2 Twin Turbo was the original motor for the SS Trailblazer

[@theozman38]

Holy boost confidence Richard!!! Your a madman. lol stay safe big brother!!!

[@collinator68]

GM needs to revisit this design and develop a direct injected version of this, basically a turbo 4.2L inline 6 cylinder DOHC with direct injection similar to the ecotec3 engines. It would be awesome with a 10 speed automatic and optional 7 speed manual transmission in the silverado 1500HD and 2500.

[@MNTNMAN-SUCA]

Thank you for sharing and teaching us there Master-Chief, much appreciated. 🙏

[@nathansumerlin8391]

10 years ago I was wanting to do this swap into my 68 camaro, it was a 6 cylinder car to begin with, would have been worth it for sure! Went with a 377 sbc solid roller instead, now it’s an odd combo with all the ls stuff

[@HahlinEngineering]

Very entertaining and fun to look at! 👍 Will you test it with twin scroll? Since its a six cyl that should be wise!? Maybe the stock manifold pointing up and a two pipe adapter!? Another suggestion: hook up EGT on all six exhaust pipes and tune the engine cylinder compensated!? I have seen impressive hp gain even on moderate boost! 💪👌

[@timothybayliss6680]

I like the wastegate discharge pointed at the signal lines and blowing stuff around. On the third run you can see when the gate starts to open. You should put this in a Miata just to spite UTG and not worry about putting the engine in the pedal box. Naturally Aspirated this will make more power than anything he does with a slant 6, and it wouldnt be a big stupid waste of time.

[@jlsracing997]

This thing wouldn't even begin to fit in a miata. This thing is really tall.

[@p0intdk]

@@jlsracing997 Where there´s is a will, there's is a way.

[@timothybayliss6680]

@@jlsracing997 I have seen a video of a Mk3 supra with a 4200 swap with stock hood. They're huge but I think if you put something other than a 7 quart oil pan on it and maybe rolled it a few degrees you could probably just get it under a miata hood. You might have to remote mount the Radiator or use an electric water pump and mount the alternator to the rear end but there is a way to do it.

[@jlsracing997]

@@timothybayliss6680 Do you follow nivlac57 and what he has done with these motors? There is a lot of work to even get one in an old Studebaker. Even cut up oil pans and pieced them back together. It would take a lot of money and fab work to do. you would really have to want it. Don't hate on Uncle Tony. He does more with less than anyone around.

[@ricjona1069]

Put it in a 240z.

[@lasthopelost9090]

E85 also has a cooling effect similar to water meth and adds more power at the cost of burning it faster

[@BearFulmer]

You are The Conductor. Always on top of those train tracks son.

[@brudevold62]

I'm curious if Atlas 4200 turbo could function well in a work truck. Going long distances, hauling a heavy payload while still having enough umph to do it day in and day out consistently. Keep us updated with the results of your testings.

[@timothybayliss6680]

It probably could but that doesn't mean it should. They weren't meant for it even though they came in a 5500lb suv. For how much work it is I would be way more trusting in a 5.3l ls turbo. I know it's all been done before but lots of guys use what works. If I was being really adventurous I would use the 4.3l LV3 v6 that's based on Gen5 engines. The guys at btr say the stock LT1 injectors are good to 950hp with gasoline, that's over 700hp on a six. They have DoD and Vvt. Stock they make as much power (almost) as the 06+ engines with 30 more ft/lbs of torque. The Gen5 blocks, even the aluminum delios, are really rugged and these engines have forged cranks. For a work truck that is going to hammer miles it might be worth it just to save some fuel. The 11.0:1 squeeze and that it runs on four cylinders when you're just rolling would make it my choice.

[@codylapoint]

I had a trailblazer with this motor and a 4.7 grand Cherokee at the same time. The grand Cherokee would pull the same trailer with a fbody on it over mountains as fast as I dared push it. The trailblazer really struggled on the same route. The Trailblazer didn't stop it as good either for what thats worth. I found this surprising because the grand Cherokee supposedly had a little less power, but the torque must have been higher.

[@brudevold62]

@@timothybayliss6680 That's basically what I'm trying to get at. Would this turbo I-6 work better than 5.3 turbo as a work truck? Power on demand as apposed to big displacement or diesel power when it's not always needed.

[@Misterfairweather]

You and Calvin have me really wanting to find a vehicle to drop an Atlas motor in, if I can find a low buck 5 cylinder I think I can fit it in a Toyota pickup.

[@MinhNguyen-ou3nu]

????? What the point

[@karlsracing8422]

I could watch this all day over the LS stuff.

[@GimmeDaBacon]

Great power on low boost can’t wait to see when you do run 25-30 pounds of boost but I have no doubt after doing what you said you’re going to it’ll make over 1000 hp

[@MNTNMAN-SUCA]

Head gaskets won't take it. Hydro-lock and grenade the block or at least crack a cylinder.

[@SoI_Badguy]

Not without aftermarket camshafts and more rpm he isn't. No way that bottom end is going to take the 1000ft-lbs it would need to make 1000hp as it is currently.

[@joshuaearnheart2756]

@Stan Dup yes. This is no Barra

[@1953fords]

@Stan Dup the latest one is around 1900hp stock crank stock block stock main caps stock head as well. Car ran 7.96 @ 4100 pounds.

[@mikestufano4961]

Ritchard I’m not an expert but isn’t it with the torque being higher than the HP that there is a restriction in the intake/cylinder head? I thought it was you that helped us and pointed it out a while ago while the other big channels skipped across it and were good with the goals they met. You reminded us of torque was what killed the 5.3 Big Bang motor wasn’t it? I hope the 6.0 big bang motor is still ALIVE! But I know stay I should stay focused on the 4.2 Ameri-Barr’s points you are making now. Me and my friends thought they were all a slug?

[@TurboV8boi]

I want to see how the torque curve would change if you used c02 boost control with two electronic solenoids instead on the boost reference setup.

[@richardholdener1727]

it can add a little power at the wastegate opening point, but only if we don't run an elect controller

[@derekbrown7392]

I'd love to see what that thing could do with forged rods & 9:1 pistons, some heavy duty ARP studs, and upgraded valve springs!

[@karlhanson7729]

Through in an Atomic timing chain kit with crank sprocket and oil pump gears, the engine will pull 800hp no worries

[@WoodLox]

Nivlac57 Atlas motor renowned

[@Tony-ib2vm]

On corn... 10:1+

[@lukehanlon9965]

Excellent series bro 👍

[@michaelbenedict9549]

The missfire is from shorting out spark from the oil seeping around the coil pack boots.

[@nessie42786]

Thanks Richard 👍

[@craiga9492]

This is shaping up to be an awesome series!

[@thatguy3277]

Please do a Big bang build with the 4.2 vortec

[@MrAero_1]

You should do a 4.2 vs 5.3 video. Cam, turbo , E85 ect or just do a cam 4.2 with using Schneider Racing Cams, for us 4.2 lovers

[@MichaelFletcher-to7mm]

I had one of these in a 2003 trailblazer, swapped in 4.10s and it seemed to have a decent amount of torque, always wanted to boost it but I was 18 at the time and wanted a Ford truck more 😂

[@damnrightimhard6664]

I've got a 2004 trailblazer lifted 6" on 35s... it would be stupid fun with boost 😂

[@MichaelFletcher-to7mm]

@@damnrightimhard6664 I wouldnt mind seeing that, what lift do you have?

[@oliverscorsim]

Dude your awesome 😎 thank you so much please put ring gap in and give her the beans. This is the motor I wanted to see the most out of these a t5 would be awesome but this is plenty amazing. Thanks

[@c0c0asauce]

This turbo engine in a first gen 4WD Colorado would be really cool. Just like a modern Syclone.

[@Mang213]

Would be better with this Trailblazer motor though. That I5 in the Colorado just didn't cut it

[@c0c0asauce]

@@Mang213 That's why I said this turbo engine. I think the 5 cylinder sounds cool but definitely would want the straight 6.

[@TEAMHYBRID007]

I know you're thinking valve cover gasket for the how the oil made it into the sonder but I'm more along the lines of the oil made it past the Rings when the vehicle was upside down if you want to get that oil out of the Rings I would suggest running some seafoam through the intake manifold maybe that might help

[@richardholdener1727]

the oil got into the plug/coil pack wells after we cleaned them-it definitely cam from the valve cover

[@TEAMHYBRID007]

To me that sounds like PVC system have you tried taking it out and shaking it and see this makes a rattle noise

[@ApeMotorsports]

Really need to play with cam timing under boost. Any n/a vvt engine I've tuned needs different vvt angles once you get over 5ish psi. You may have even seen some gains with different vvt after you installed the header.

[@kensmechanicalaffair]

How would he get vvt on a non vvt engine?

[@ApeMotorsports]

The 4200's have vvt on the exhaust cam.

[@kensmechanicalaffair]

@@ApeMotorsports Cool

[@Zzeke]

I love this! Thanks Richard!

[@karlhanson7729]

We are seeing these engine's with some serious internal work pull 2000+ hp at the wheel's, check out the orange XR6 Falcon with number plates "RIPSS"

[@PikemanLures]

I'm sure it's been mentioned, but I really wish the Dyno graph started around 1800 rpm or idle.

[@thejavelin7832]

I want this in my Rambler.

[@shannonschneider8413]

Twin turbos,yes please and thankyou,something to annoy the barra motors finally

[@jeremyclose705]

Richard! Let's get a fallow up video in this awesome engine!

[@stephen865]

im an aussie who owns a factory turbo barra and honestly dont know why use arnt using this engine more i would love to have these in Australia

[@tmacie2]

I hope you have Fasterproms do the porting on the head! Jeremy is excited to be a part of the research!! I'm sure George is excited too, but I don't know if the world is ready for Richard and George in the same room. Lol.

[@richardholdener1727]

should be fun

[@squaddlife]

Screw them Motor Trend dudes.. Richard gives all the sauce away for the FREE 99!!!!

[@barryhuddlestun3098]

Very interesting. That Torque Plateau, id think directly translates to acceleration in MPH. So how can we make that Plateau longer?

[@richardholdener1727]

cam timing, boost

[@juanmangerita]

Wow! Amazing engine... If built with the right parts it would be the 2JZ killer...

[@shadowopsairman1583]

Considering deckplates are used to increase stroke on those 1J/2Js...

[@Iamthestig42069]

I wanna see a 53-55 corvette restomod with one of these. 53-54 you could only get a corvette with an inline 6 and a few in 55 so it’s not sacrilege

[@rparr51]

Richard, I like this format and the fact you are showing the Aussies we can build a great six also..Keep at it, nitrous plus boost...What will the engine tale?

[@TurbineResearch]

Thanks Richard! your a legend

[@bartpang]

I wonder if you're getting into valve float. Also you could probably run the water thru the intercooler first and then thru the motor.

[@shagirani5518]

It would be cool to see how much hp this thing makes at high boost.... And what is the rev limit on this motor...

[@Ktmfan450]

I wonder if they make heavy duty studs and head gasket for this thing

[@callofgamer24]

The stock rev limit is 6300 RPM.

[@Racer..X]

I’ll save you guys some time. 555hp 578lbs of torque on 11.3lbs of boost.

[@rexmedina4561]

Most of us came for the stuutututututu lol

[@timothyevans4323]

@@rexmedina4561 I came for the whrblgrbl magic...

[@rexmedina4561]

@@timothyevans4323 love that too lol

[@andrewstewart1464]

@@rexmedina4561 I came for both the 4200 and Richard's relentless enthusiasm!

[@timothyevans4323]

@@rexmedina4561 air goes in, happiness comes out!

[@disciplepullover326]

This is really cool! But with every engine I see pushed and tweaked. I'm Very curious about what parts would break first when taken to its limit!

[@corporalpunishment1133]

Valve float boost is pushing the valve open. That's why one of the first Barra mods is valve springs.

[@richardholdener1727]

do Barra and Atlas motors have the same spring rate?

[@corporalpunishment1133]

@@richardholdener1727 I'm just throwing my best guess at it. That way if I'm right I can boast about it.

[@mfree80286]

@@richardholdener1727 Atlas is 27lb at 1.589" (closed) and open rate is 120@1.044". 1.457" intake valve diameter, would have to measure the seat and stem to get the exposed area, but at 1.67 square inches you'd slip off the seat at a little over 16psi differential pressure. I can't find anything on the stock Barra springs but all the aftermarket springs are over 90lb closed pressure... which I have to say might not live long in the Atlas looking at that chain. EDIT: Holy cow, 27 pounds seat pressure? I wouldn't believe it but that's right off an OEM replacement's spec sheet.... EDIT EDIT: Ok, I forgot it's a 4 valve and it didn't even click with the 1.457" valve size that they're small and wouldn't need much pressure stock.

[@doc221978]

This would make a good engine for a budget C10. As much as I like the LS swap, they are kinda over done.

[@OzarksWildman]

Yay! Boost! 🙌