The take away. The Chevy engineers put together an excellent stock manifold. Save your money & run a stock ls3 manifold.

Remember back in the day when anything was better than stock?

Richard you are a diabolical genius! All of your videos are so helpful, educational and fun. Wish I could subscribe twice. Thank you!!

Stock LS3 intake manifold is impressive.

Always liked the loom of the Edelbrock X-Ram.

Looks like the answer is "Stock LS3"!

Holy cow Richard, you're a BEAST !! Thank you for educating us !

Richard, it's amazing how much you're helping the average driveway hot rodder make power, save money, andmake educated decisions. This video is awesome. I had a knot in my stomach watching the mid ram dual quad intake run hoping nothing went horribly wrong with the fuel dripping out of the rail... Keep up the awesome videos, and thank you.

Hands down the most informative videos. Thank you for doing all these test to shut people up. The dyno don't lie!! Great stuff, thanks again. Ahmad

As usual you impress with the ultimate shootout of intakes(LS3), my hats off to you, keep up the Good work...

this is the kind of testing I love to see. Apples to Apples, everything the same with minimal, if not only a single data point changed as the main crux of the test. I'm impressed at how good the stock LS3 manifold is.

What a tremendous amount of work. Thank you so much for sharing this!!!

Don't let this go to your head but, your channel is my new favorite. Keep it up.

Absolutely awesome video with real empirical data that will save folks tons of money. This page is easily one of my favorite. Keep it up.

GREAT VIDEO Richard, hats off to you and the awesome effort you put into these videos for us LS nuts 👍🏻

Thank you Richard for these videos, I know it takes time to go back and overlay them etc. they are filled with lots of knowledge for beginners and experts. They have always been great content, but even better during a quarantine lol.

What a great video, you must be a master @ swapping intakes now!

I'm a dyed in the wool ford guy but still very much appreciate your LS videos. Physics don't give a crap about brands...

Badass video!! It puts things in perspective for the LS3 manifold. A shut door case!!! Thanks for that - look forward to the 416 ci LS3 with carburetor.

Good stuff Richard/Hot Rod! I'd love to see head and intake testing with the LS7!

Love your videos! Thanks for all your testing 👍

Wow, exhaustive and thorough. Thanks

Wow amazing test, Richard! I am shocked and amazed by the stock LS3 intake. Personally I will choose the Kegalodon!

Seriously surprised with these results

It is amazing just how well designed the LS3 intake manifold is. GM really did their R&D homework.

Sick man this is awesome I can’t wait to have my engine Edelbrock cross Ram engine running

Great Work!

Amazing video

Can’t wait to see the cathedral port intake test

Love your videos Richard no BS and just results! Thanks

Great video and surprised by some of the results. If schedule allows, would be real interested in your testing results on the LFX engine, the 60 degree V6 duel overhead cam engine. I'm now subscribed.

Thanks for all the hard work you do it's a lot of good information looks like the across is a good all-purpose

Richard, you're a Beast, Sir. 👍🤘 Always delivering the goods no matter what. 👌😎👍 Keep up the fight.✊

This video and the others I've watched all make perfect sense. Thank you for all the hard work and straight-up factual numbers! I subscribed several videos ago and I still have more to watch. To me, with long-tube headers, it makes more sense to run longer intake runners to balance the airflow. Is there a cross-ram where the TBs are hanging out over the valve covers, making them very long intake runners? It could possibly raise the torque numbers white a bit, and for a truck that's used like a truck, that's what is needed more than high-RPM HP numbers.

Thanks for saving me $800 and lessened power below 6k RPM. Your Awesome Richard!

I love these videos man. I would love to see you guys get your own show on motor trend.

Great info Richard! Factory manifolds are dirt cheap too @ the junkyard..

The reason they make the ls3 to cathedral port adapters is so that you can throw a LSA blower on a 5.3 or older 6.0. For a while, you could get used LSA blowers for cheap just needing the coupler replaced/upgraded. I was buying the blowers from a local dealer for $300 each, fixing them for $100 or less.

Can’t like this video enough. Looking forward to more.

What an unexpected suprise

I'm new to the ls engines here in the uk for my race car. Awesome video very informative for my build

~~~》 The duel intake was screaming for twin turbos.... Great video.

I know this is a little late but I was thinking about other intakes to try and then remembered the ALIEN intake from Tom Nelson. A DUEL FUEL Intake. Wilson, Hogan, Other sheet metal intakes. Perferrably LS3 type rec port. keep up the good work.

Badass test. Thank you!

Killed it. Best vid ever

Looking forward to seeing the carbon fiber intake i was actually looking into buying one

For the price, for all street applications, just run the factory intake, it makes power where you can and will use it most

Love the content! I Run the Tbss intake on my Firebird its ugly but when combined with boost is an animal! This video convinces me to keep it 😎

Thanks Rich, great clip as always. So here is a challenge for you regarding LS manifolds. Surely there exists a manifold that has dual intake lengths controlled via butterfly valves that can closely match the best performance of the stock manifold below 6000 rpm, then switch to a short runner length to get the above 6000 rpm horsepower increases. The win / win manifold. Once you find the best then add big turbo boost!

Great video.

Love your videos. Thanks i learn so much

Another home run Rich

It’s all about cylinder and valve size. This is why the stock intake is usually best or close to it on stock displacement/heads.

crazy how badass the stock intake does!

Fantastic video mate, keep up the amazing work. Would be keen to see a video of ITB's where you just try extremely unrealistically straight long runners and compare the change every 100mm of length. It's not practical, but more of a curiosity factor. Given it's just a lid change, my only guess as to the high ram variation is possibly from a straighter air path to the back of the valve.

THANKS RICH !! BEEN TRYING TO DECIDE ON WHAT INTAKE FOR MY LQ9 BUILD THIS REALLY HELPED ME DECIDE HAVE TO GET THE SPACERS TO CONVERT IT TO CATHEDERAL PORT HEADS I HAVE !!

Awesome content!!! Thank you!!!!

Awsome results thanks for sharing 👍😀 greeting from Puerto Rico 🇵🇷👍

great job

Thanks for the info !

Badass. Thanks for doing this video.

Amazing video thank you!

Great video

It would be interesting to see how each intake would perform with a turbo setup.

Great vid TOOOON of work !

Wow, this is awesome! 👍 Side note: I wonder how that Holley mid-rise intake would perform, with some velocity stacks on top.

Who in the hell would want to lose power from an entire torque curve all the way to 6 grand, just to get a couple more ponies at 6700 RPMs

Fantastic video! I wish y'all had an real time adjustable runner length choice. Mazda did it on the MX-5 years ago. Simply flips a door from one runner length to the next length using a vacuum based actuator. It would be neat if someone could make one for the LS3 and you could test it. Makes me wonder how effective it is.

Great stuff 👍

So good!!!

Richard really enjoying watching your videos. I was thinking about doing a little intake testing myself by swapping intakes on my SBC 383 from my modified Lingenfelter SuperRam to the TPIS MiniRam short runner intake. I've ran both manifolds with my 700r4 and the SuperRam was more fun to drive and just a bit quicker, I've swapped in a T56 and wanted to test the MiniRam intake with the 6 spd. Your testing makes it hard to justify all the work involved in the swap, still might do it anyway. Keep up the great videos!!

Hey Richard, on the Holley Mid Rise Manifold the fuel rail seems to be leaking pretty good? just an observation but your videos and tests are fricken awesome keep it up

Dang.... 19 manifold changes. Richard if you ever do this with 19 BBC intakes, let me know in advance. I'll have to buy stock in Permatex lol. Good stuff man.

Wow great vid ty

Good video cant wait to see pt2. Kinda surprised gm never made a variable length intake, but why would you with results like that

YOUR THE MAN DUDE!

The need the carb video NOW! lol jk great stuff like always

I'd like to see that Edelbrock cross ram hooked to twin turbos.

Great comparison of dyno queen, gloat fest setups, versus daily driver/street-strip setups. 50hp more mid range, beats 50hp peak, for street driven cars.

This is fucking awesome man.

Fast with 102 will gain over stock with 92.. Nice test!

Would like to see a test with the Holley cross ram manifold and a Speedmaster ITB cross ram manifold.......

Speedmaster actually makes something that made me look twice! Alas, they failed to make power. I am looking at the picture and wondering if there is enough clearance for me to machine longer runners? Without seeing one in person, it is hard to tell if the configuration has them running into each other dooming them to short runner length? Hey, GREAT video!!!

Numbers are king!

Well this video saved me from cutting a hole in my prized IROC-Z28 hood. Thanks Richard! 🔧😼

@GwatneyPerformance stock LS3 rod mod $250 / porting $125 / heat shield $75. Take your stock LS3 intake to the next level affordability and compete with those peak competitors power numbers. They also offer stock LS3 throttle body porting $125. Neither mod tuning! Combined intake+throttle body combo power increase of 13hp-17hp (double these increases if your cammed!).

Still like the stock factory intakes. But for EFI the LS3 Holley sniper is hard to beat.

Thanks for another great video! I follow you here and on sloppy. One suggestion, could you put the specs of your test motor in the video description? I often find myself scrolling back through the video for things like compression ratio, cam specs, details like that. Thanks again and keep up the great work.

Hi Richard, First off. Thank you very much for all your work on here. Quickly became my favourite channel. Your tests and knowledge alone with your good presentation is amazing to have shared. It answers so many questions. Second, I read lots of the articles before I seen you on here and they were great too. I think in the magazines you got credit, but I’ve noticed, but now that I’ve seen your channel you don’t seem to get your just due credit on the web version of the articles for some reason.. just not cool is all.. third. I got an LS3 intake, I read this review and felt much better about it. Thank you. But, that said how cool would a twin turbskies with that look on the x-ram? NA+boost=good things. But have you ever tried to see how good this one is boosted? I don’t recall seeing it anywhere. Take care and thank you again.

I was hoping to see how well the stock manifold did on a larger displacement motor. I am currently rebuilding the LS3 for my 2010 Camaro into a 429 stroker.

Awesome video, thank you for the information! Would you expect the Holly 300-132 mid-rise manifold to perform similarly to the other two? I'm kind of disappointed I'll be giving up so much usable power/torque but I already have a TBI system on the car...

What i think was happening with the crossram and why it was unique is because the intake had two different resonances. On this setup the factory intake was tuning at about 5000rpm, this was probably a secondary wave tuning. The xRam has a secondary tuning at a slightly lower rpm, that's why it has the earlier torque advantage, secondary wave would be at about 3600 rpm and primary wave at about 7200. It's not a substantial advantage but that is my guess as to the reason. I've done some calculations and the rpm for the xRam for tuned rpm is right. Is should be about 5200 for the ls3 but I'm gonna guess based on the curve the headers are doing their thing right at about 5500.

You was more than helpful i have a original intake and was really thinking about got with the Hi ram intake but 👎 I believe I can make up on the big end with boost

great datas

Pole position! 🙌

Very informative video Richard. Learned a lot! BUT I would like your thoughts on testing a CNC ported OE LS3 manifold. This is becoming quite popular but I would appreciate your views on this practice.

Ok, ok, ok. Fantastic video as always. But what about with nitrous or under boost? I mean that's what most of us are aspiring for anyway right?

@25:37 this tells the true story. The HI Dual made 40 more peak hp but 3 less average vs the LS3. That's a big difference in drivability not to mention costs!

Love it, but can we see some dual plane intake manifolds too? Thank you!

Now, if I could talk you into directing your scientific approach to 385 series fords😎