8-1 header on Destroked 6.0 engine dyno at 30psi

Destroked 6.0 with a Callies 4.8L/3.268" stroke crank, C5R heads, custom 8-1 header by One Guys Garage, and a Forced Inductions S491. This was back in March of 2020, I have since sold the turbo setup and the engine is in the car NA right now. The 8-1 was fun but it really hurt the top end power and RPM of this particular engine, if I were to do this again I would like to do larger primaries and collector size. It did spool very quick (contrary to popular belief), and made good low end power for its size though! 30 psi and 1500HP

[@Mastermindyoung14]

I've always wanted to see this with a flat plane crank and 8-1 pulse paired twin scroll setup. It would make equal length tricky but look/perform insane

[@ellisjackson3355]

Flat plane crank + 8-1 header..... wouldn't that be kind of redundant in terms of exhaust scavenging? Maybe not

[@PlayinWithMahWii]

@@ellisjackson3355 Yes. With a flat plane crank, a 4-1 dual header + exhaust would provide less flow restriction than an 8-1 header

[@silentbobfan32]

Flatplane crank isn't for exhaust scavenging, it's for balance, they don't need the same counterweights as a cross plane crank so they tend to weigh about half as much, which means much faster revs. The flow and scavenging of an 8-1 header vs a 4-2 setup would depend on how well each is set up. An 8-1 is a lot harder to fit into a body though and would have a much longer minimum primary length, so that would limit the range it could be tuned for

[@CarLos-yi7ne]

​​@@silentbobfan32 Flat plane crank is best for exhaust scavening and not needing to have those crazy exhaust headers to make use of the benefits of the scavening effect. Cross plane cranks only exist because they run smooter. So that is why you see flat plane cranks only for racing or sports cars. Example: Ferrari 308 has flat plane crank, Lancia Thema 8.32 has cross plane crank. For the rest it is exactly the same engine in a Sportscar vs a 4 door Saloon.

[@troymullin3684]

Has anyone ever tried designing a cam for a flat plane crank? If so, what were the results? And how did the cams differ?

[@hanzgrueber145]

It’s enough to make a grown man cry.. *sheds freedom tear*

[@eliaspompa2630]

Those Bluetooth intake pipes look killer

[@ihearti24traffic]

Build something better fucka

[@MrIngorodrigues]

You dont read The description sure

[@Christdeliverme]

All you have to do is wait 15 seconds

[@MrIngorodrigues]

@@Christdeliverme with The Hood closed should do a 0,5psi without intake pipes lol

[@Thee_Magic_Man]

😑

[@double_plaidnum]

Happy to see this going. I bought a 4.8 crank from you on ls1tech years ago. Still haven't used it. I always liked your build.

[@turbotron2]

Very cool. I forgot to mention this wasn't a stock crank, but a callies unit I bought from a guy at Katech, along with the C5R heads on this engine. A stock 4.8 crank might be just fine at this level though too!

[@edmundnlemadim8480]

@Jakson S any chance that you have that Callies part number for that 3.268 crankshaft?

[@zx6rkawi09]

@@edmundnlemadim8480 im interested 2 i got a ls3 block and heads to build this setup

[@englandtra]

Why would you destroke an engine in order to make far less torque and hp

[@bimmerthings6345]

@@englandtra i think characteristic curve but Who knows..?

[@llewvirtue861]

How that holds together is unreal

[@35RSkyline]

Because LS

[@omenbrothersband]

@@bigboreracing356 more than 1k hp on stock bottom end ?

[@Truthcanbeconfusing]

It holds just fine because the rod length is shorter than the one used in in the 6 liter which is 3.622 inches and the shorter rod does not make the crankshaft wobble like a noodle at high rpm. An upgraded top end pushrods, rockers and lifters and you're good to go.

[@ayeyogalaxy6524]

Because it's not making any boost, look at the intake tube

[@StationroadRatrods]

@@Truthcanbeconfusingthis is actually incorrect, the 4.8 rod is longer than a 6.0 rod 4.8 -6.298” 6.0 -6.098”

[@warrenbleakley3255]

I love this out of the box thinking I’m in Australia and currently CAD designing reverse cylinder heads for my LS with exhaust in the valley so I can do a 8 into 1 short manifold into a single 98mm turbo. It will have twin plenum chamber intakes manifolds on either side with twin 90mm throttle bodies water to air intercooler using the AC system to chill the water all this on a destroked 6L on E85 wish me luck it will be unique if nothing else. Please keep up with your content it is fantastic I can’t wait to see more. Big fan from across the world.

[@e.lan.s]

i want a follow up on that

[@thatmodel3]

i need to see that

[@petehenderson]

Update

[@salmonslayer707]

I hope to see some video of that

[@Neishy4AGTE]

Not sure your stock AC compressor will have enough capacity to really have to much effect, unless it's just for cooling between pulls. Not sure where you'll get a small heat exchanger either but I wish you luck regardless.

[@Matt2chee]

That's actually kind of refreshing, what a beautiful motor.

[@zerohourdrift]

Whenever I get around to doing an ls, I want this exact setup lol... raddest sounding, most insane looking setup ever😂

[@robertjewsbury3212]

Good Lord, that thing sounds angry!! Whackin’ the throttle in garage produced a sound I’ve never heard b4 👍

[@ash5.0]

What an absolute unit

[@jefftheis742]

Sounds incredible 🤩

[@SirUncleCid]

I love the block being used as a stand

[@klausvonschmit4722]

Sounds wicked! Thanks for posting!

[@kari53]

I absolutely love that engine. I've built a few destroked engines. I built an NA Subaru engine 10,000 rpm redline engine. Wish I never sold that car. But this engine and header combo is heaven.

[@mikes.1882]

I put 1400cc heads with 1600cc intake valves on a 1600cc block. Compression was 14.25:1. my big mistake was cutting a bunch of weight off the flywheel.

[@gearhead7896]

I did a lot of research and reading when I was looking for headers from my Caprice PPV. I came across a post saying that the 1-7/8" primaries killed low end torque and horsepower. In fact, the poster had 1-3/4" headers on his G8 and a header company offered him to demo a set of 1-7/8" headers. He put them on and hated them because of the hp/tq low end kill and put the 1-3/4" back on. He called the company and started asking some questions. The header company said they don't recommend running 1-7/8" headers on anything below 440 CID. He asked then why do you make these and the company rep said "because people believe bigger is always better and they will buy them".

[@streetdevilz1454]

Shes all power love the sound your a genius at hand 🙌

[@doczspec4502]

Dear God man. I was talking out loud, 900 then that thing kept climbing. Holy S. Back that off some and have a great life holy F That's a small block. I can believe what I just saw

[@misterdeedeedee]

i loved how it just casually jumped like 500hp as soon as the turbo spooled on those 2 runs

[@HeraldofRighteousness]

Nice build, something to have that you'll never run out of usable power, can crank it up or down like the volume as desired.

[@cyrus7210]

What an increase between the three runs.. Just Badass....

[@Xenomorphenia]

O... M... G!!!! That was AWESOME! ❤ Good to see the tuning bringing it all together.

[@Hammerback0]

The 8 into 1 looks awesome. Very well done

[@rickybailey7123]

It sounds so dam good it rips the RR's off from a idle Holly shit I love it !!! Thank you for sharing it made my night bud!!!

[@maxglomski6716]

That was a fun day Jakson! hard to believe that was already 500 Engines ago for me haha Currently at #10,715

[@HASTE347]

Nice! It also confirms the ~17.5 PSI to double the HP of an engine equation used by Procharger.

[@yepitsme431]

and only 1 bar (14.5psi) with a turbo =)

[@GTRliffe]

DAM! didn’t know equals improve the sound that much!!

[@CITYBORNDESERTBRED]

Christ! I always loved the way equal length headers sound, but figured it was only an NA thing. Myth, busted 🤘🏾

[@DonziGT230]

In this case it's the 8-1 connection that makes it unique sounding.

[@zackjay71]

Well as far as getting it to fit into a car it is a myth😊

[@edwardwood3622]

Two thumbs up 👍👍 for this epic set up

[@kevinAuman1]

Wowww, music to my ears! While running in the beginning it sounded very much like those Nascar engines I was waiting to see how high she revved to see if it infact reassembled one lol

[@brandonthorbahn2405]

Probably lots of exhaust scavenging going on, I love it.

[@Simon_HDM]

Don't you just love it when people say sh#t like 'a turbo just always ruins sound'...no sugarpie, it's your faulty header design what's causing it to sound like a freakin lawnmower(this is an awesome build)

[@rotorazor905]

Nice Sound V8 with 8@1 headers!

[@ShaulDawg]

Straight fire. Protect that engine at all costs

[@cr250lover1]

That was the coolest video I have ever seen…. Job well done 👍

[@TaylorMadejdm1975]

Take that Hellcrate!!.. (now that's impressive 👏)

[@Nostradamus_Order33]

😂

[@zackjay71]

Yeah but you can’t fit this into a car

[@rickybailey7123]

Got to watch it again all teeth out grinning!!

[@1LongTallTexan]

This stroked my insanity! Great video of a great engine doing what great engines do....Roar! I'm impressed! Well done!

[@things_that_click]

Well, that's just crazy. Love it.

[@dustyjohnson8175]

One wild sounding LS! LOVE IT! SWEEEEEET!

[@katenrr]

Absolutely fabulous well done it’s got me thinking 🤔

[@LandonClimbs]

Daaaaaammmnn very nice work

[@thisdayage7997]

That sound 🤯

[@regsmith7604]

That’s crazy power!

[@jonathanbrown3376]

That's badass sounds killer

[@nichudnic2469]

0:42 "best motor for a compressor ever, will get bigger storage tank soon" 🤣

[@anthonys7534]

That escalated quickly!

[@kensmechanicalaffair]

Man, geez.

[@douglasgreninger110]

I love those 8 into 1 headers.

[@marlinnotfish]

Sounds insane

[@silencefiction60]

Wow!!!! Tones of power👍👍👍

[@Metro-fx1bv]

Them heads were getting HOT

[@jamesmikesell5458]

What a power house

[@hondatech5000]

Excellent work sounds fantastic

[@Dubtee]

I need to comment again, I've watched this video twice now. Natty it's almost 600, 30boost at 1500?!?! God DAMN

[@doc7000]

1500BHP 5.3L turbo V-8, you can put that into a lot of things.

[@WayneLambrightIII]

Wow, that is very impressive.

[@68chevelleconcours]

You’re my hero! That’s awesome!

[@BigDipperAK]

Holy dog shit. Wow that’s just amazing. How in the hell did that not blow up?😂

[@scottcook414]

You sir are a god

[@QXZ9027MKII]

Top notch Sir,,, 💪🏼💪🏼🤙🏼🤙🏼🤙🏼

[@riverweakley8366]

I love the stuff supporting the turbo and exhaust. Definitely some crap I would do😂😂

[@turbotron2]

Yes sir, it was sketchy. Moving it around on that engine stand I put a 2x4 under the crank pulley, Lol. In the car it was supported.

[@bellboy1011]

Awesome work man. Killer numbers

[@potsy9973]

SS/S = super sick and slick

[@curtmeyer4894]

The song of my people.....

[@rickycollin3554]

Smooth sound l can listen all day 😮

[@Wardaddy233]

Got a friend that has a destroked Ls with a 98mm turbo it’s got all forged internals and aluminum rods it runs real good

[@ralexander9495]

THIS THING IS WILD!!

[@kelseyboy]

That was incredible

[@kordelldunn1287]

Hey my brother imma need you in this near future thanks you for the video I am in Louisiana I will see you later big brother thanks

[@mstallc]

bruh!!! sounds sooooo good!

[@garrettmyhre3579]

This would be perfect for my civic.

[@michaellambert5223]

That turbo almost winds up to tinnitus frequency 😁

[@alaskinian]

That is awesome Mr.

[@JohnnyAnderson1]

wait.... that tiny air to water intercooler is flowing 1500HP! wow!

[@turbotron2]

Yes sir, it is a frozen boost type 15 I believe. Measured pressure drop during this session and it was around 1psi. I'd have to look back to see what IATs were exactly, but they were definitely within reason, just had city hose water running through it.

[@michaelcarmean4906]

That Will Work ✅ I’ll Take It

[@ronmenzies362]

thats frickin awesome bud

[@rockthenationracing1616]

Omfg. That is incredible 🎉

[@danielssonsgarage]

Love it! I want that engine at 14,5psi, a very happy mean sounding thousand hp engine

[@derekr1854]

14.7 psi? My goal is for 15 psi in my 408 E85 with a 88/103mm turbo

[@joegage6171]

Damn that’s a unit! I need that in my old sleekcraft!

[@Jaketyler1974]

OMG, HELLS YEAH!!!🤤

[@peraz968]

Sounds good! much better than regular american v8. Sounds like a italian engine or something like that.

[@tgsubie]

The 2nd pull i was like awwww cmon cmon hit that 1k!!! Hit it hit it! Aww alright next one. Woo 1k! Yeahhh- oh okay damn. Oh. OH OKAY! Awesome build lol.

[@pauloricardotortelli4434]

Poor man's 180° exhaust pipes

[@jittychitty]

That's great fellas

[@WildWildWeasel]

Thing basically makes 1500hp, holy shit xD

[@user-rx7dc7qn9v]

Not bad for a Ls and I haven’t seen 8 pipes on cars since some people started doing that in the 60s my dad used to show me pictures and I can’t believe it’s back again only this time with a turbo and I get a little more from a sbc 400 and with a custom cam for the flat plane crank about 2200 and it’s tuned port injection from a 86 camaro intake with custom chip and painless wiring for the intake I don’t like the design of the Ls because of the location of the oil pump but people swear by them and I’m just a old skool guy 😂 I took my build from a car that was way ahead of its time it’s called a Vector 🤘 beast of a car that isn’t around anymore unfortunately

[@brettmoore3194]

Might wanna open that garage door

[@StationroadRatrods]

This is what I hoped my destroked 6 litre would sound like, but I went with twins and tri Y headers. It still sounded neat, but nowhere near as cool as this

[@flyonbyya]

Friggin wild !

[@overyonderjustapiece]

Judging by how glowing hot that merge got, you need to go bigger on the merge and probably bigger on the turbo to reduce the restriction. Larger turbo would still spool pretty well with a fairly close back housing to this. But yes, you built a nice sounding and good powered setup. Larger turbo would do the same but with less boost.

[@WildcatWarrior15]

4.8L, 30psi, 1500hp. Wild.

[@beardedforlife3740]

It's not a 4.8

[@drd1924]

totally nuts!

[@fluffymcbottom5021]

That’s badass

[@derekkimball6662]

Amazing.

[@dertywhiteboy5174]

Freaking unbelievable the seriousness of forced induction

[@Kevin_Knox]

Mother of God!

[@arturozarate1752]

THAT'S WTF I'M TALKING ABOUT!!!! Just the thumbnail alone....very bitchin!

[@melkerpersson3323]

What a recipe!!👌

[@probablyhiding]

well, the algorithm is fuckin reading my mind and this video proves it

[@hendo337]

I want to see a 4.125"-4.155" bore block with a 4.8 crank under hard boost for fun. I doubt there are any proven advantages of de-stroking an already small engine like a 6.0. Same heads, cam, intake, turbo, fuel system, tuning, compression, ect and the 6L will make more power from every unit of size until the engines both simply reach the limit of the turbo, fuel, head sealing, system , ect.

[@fuse8052]

Impressive