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I will never follow that Eric guy the guy is such a prick and needs to learn how to treat people. The guy is clearly unhappy in his own life or something constantly has to take his pissing us out on other people

looks like the thing on Doc Oc's back!

Nice to see you Charles!

Yes I was asking if he could find a better intake. I haven't seen the best results out of the other ones. I'm glad you have one. I believe yours will flow better and have better fuel distribution.

Eric's a good guy... first to admit a mistake. Hard to beat a guy like that.

Is it the Popular Hot Rodding article, 447 HP Vortec Small-Block Build - Budget Sledgehammer? You should easily sail past 500

Hi charlie good good to see you agine👍🏻i send to your email my cylinder haed video please help me to what i to do

That's what happens when people don't know that the LS1 has a rectangle port. Charles, have you ever epoxied an LS1 port?

It wont thumbs up. 😱

That is some interesting intake design, cool stuff.

Welcome back. Paused yourself again!

Like the info on the cathedral port .can t wait to see if completed

Thanks for the cool stuff, hope the bad stuff teeters out. Good luck.

at 16 i ported a set of J heads on my 79 360 engine and put a set of used long tub heads on my 79 step-side. i was surprised in the change even with a stock cam. of course, when i got older and cars became a money pit lol i ended up stroking that engine. i even round off the intake, most people forget the intake.

I have a 92 350 Everything brand new Exept the heads and pistons Eagle crank Stage 4 Cam 750 CFM carb I wondering if I keep the stock 193 heads I have would all the power upgrades be useless it’s going into a 90 camero RS

Interesting to see the swirl difference.

Thanks for this. I just broke through on my e7s.

I don't put a lot of stock into the importance of finish for a daily use type deal because after a couple of years of running the texture is going to be totally different once it is coated in fuel and oil residue.

Would you go over the larger valve? I am assuming it is a shorter chevy valve. Thanks

If he is doing EFI why not to the sploder intake? They litter the planet. Or get the truck lower and edelbrock upper?

well i got a set and im about to sent them off to a machine shop its going on a hot rod /touring car ..so iwant it to have some shit and git and a lil cam at idle.....seeing all this makes me feel alot better ..used to a prevortec engine was just a clunker to me ..goofy teens putting glass packs on them and making noise ..and noticed they was slow ..my old 283 would would have a wicked sound and the speed...but they are getting rare so i just dont wanna mess with them .and try to get something that parts are plentiful ..every scrap yard has them 80s and 90s trucks

Hey Andy, unless you are after that rough texture from the die grinder burr, as a sheet metal worker I would hit that shit with a flap wheel while turning like you have done, and if needed go over it with a rexcut wheel or a seaweed wheel (not sure the proper name) like David has shown in previous vids, but love to have seen this and from a sheetmetal workers perspective there is probably 5x times more consumables that you don't know about that could shorten your work time by at least half 😅 respond to me if you need to know more, otherwise am so glad to hear from you or David from Queensland Australia 🌏 man!

Another great video and good to see a newcomer, to me anyway 😅 thanks guys, I really love this Mission Impossible project and hope to see the next vid inline 😅 have been having trouble seeing these videos in sequence

TWIRL - Swirl & Tumble DV - King David’s terminology:) I’ll try not to do Monty Phython during a ten day class:) Constitutional Peasant's & Knights of Ni Roger the Shrubbery specialist becomes a head porting technician:)

What mite be the problem when at high lift the inches of water go down say 25” to 24”

Recommend a good electric die grinder? Bought a foredom pedal speed control My old mutabos had adjustable speeds so pedals would work on them. They finally burned out though Any more info on your (model?) sonic tester? at the point I really need to start using one. Esp for imported alum heads, some areas the metal gets goofy

Nice job...really dig your finish work. Are you using any carbide here or just rolling it for the most part?

So, maybe this winter you let me put AC in your garage so it won't be an oven next summer? REAL AC, not that lil portable thingy.....

I like feeling dumb watching smart ppl figure out new ways of finding power

I don't care for having the swirl change direction during the stroke, but its probably just my prefrence and no dyno tested theory that it matters.

I left a comment already but as I said before. When you start thinking about the flow path, include the fuel path. While rotation is mixed with tumble. The fuel likes to stay over the exhaust valves. Concentrate the flow from the divider. Inside out rotation. With the fuel path. The outsides of the port slow down because of the spread. The high speed remains in the middle. Left port spin counter clockwise. Right...clockwise. Another point to think about, is timing. Not ignition, but the entire delivery timing. At 9000rpm, the tumble or swirl doesn't get a chance to complete its journey. It is ignited when it barely reaches the back side of the cylinder. Don't forget the overlap period and what the exhaust vacuum is causing to the intake charge. Straight in and Straight out. No time to tumble or swirl. Another method used to cause low rpm mix is to alter valve timing. Individual actuation of each valve can be tailored to change valve timing. Not on this application but most ohc configurations will alter valve timing on each valve. Nice white board. As I stated. Maybe I should do my next video from the shop.

Hmmm what an interesting topic ... would love to see back to back dyno tests ... thanks CS very interesting

Interesting topic. How critical is swirl/tumble when comparing port (wet intake) vs direct fuel injection? Many years ago, a pro stock engine builder commented that he preferred a more gentle swirl motion. His theory was that a slow mixture motion during combustion resulted in a more complete burn (compressed and still mixture around the spark plug) vs a fast motion, where I envision, the flame kernel swirling around creating layers of fresh to burnt mixtures within the chamber.

there the holden GM v8 that usually can only run 26 degrees of timing in there got a really flat valve angle to the pistons and they always had good torque range . they have a very iconic exhaust note over the sbc and LS even fords. they just missed the last generation change they needed before LS was used

Very interesting good stuff

Now you have me pondering😂😂😂, recently my engine suffered bent valves and the cylinder head is going to get rebuilt, an X20XEV engine, what chance you have access to a cylinder head from this engine and do an evaluation of it in terms of what came from the factory and what can be done...i'm from Trinidad and Tobago, watching DV's channel, i know he resided here late 80's to 90's, his teachings are well known by the old school mechanics here, for my X20XEV engine, not enough quantity of cylinder head valves were located locally, from luck a cross refferenced engine from the USA market was found, a A20DMS motor from a suzuki Forenza...other engine codes be X20SE, X22SE from chevrolet optra and Daewoo Nubria....looking forward to see if my request can be fulfilled

Sounds like it's time to hook up with a 3D printer.

Love the whiteboard and sound effects Charles.

If I wanted to make a poly quad engine, I'd use different sized valves, the ports would be like you suggested, the valves would be nearly parallel to take out as much of the pent roof as possible, make it almost like a diesel engine combustion chamber, and the spark plug in the middle would have a cap over the electrode with little holes drilled around the sides. Finally the piston crown would be shaped sort of like a diesel piston, but without the dish. The piston crown would be in a shape that accents the reduced pent roof chamber. With a direct injection and strong igntion system. Maseratti Nettuno engine in the MC20 uses such a combustion system, minus the offset valve sizes.

Asked Warren Johnson on DragBossgarage live chat. How important is swirl on a Pro Stock engine? He said very important and to make an efficient combustion chamber or you will have a bad one like a HEMI ! I think you have geat ideas I know you will make it work. It would be great if you were able to test that small bore some how. And yes putting the swirl port heads on my 79 350 it spark knocked and has to back the timing off.

4 valve diesels have 8 intake ports, and great attention is paid to swirl. I have several diesel heads to look at, and they all adhere to the same basic principles

Any word on when dv's polyquad ecoboost will be ready

When in doubt, just add some swumble! Lol! Great topic and food for thought!

A negative effect may use to your advantage is to let the left exhaust port have reverse flow on overlap while right hand side port is limited.

Changing the low lift flow on one of the exhaust valves would also help during overlap. Really interesting stuff to think about

I believe DV or 1 of his students called it "Twirl"

These fascinate me, is there anybody that can do this do cylinder heads? The ex pro Stock guy he has on the show in the past. They never answered the email at all, same with a DV system cam to be spec'd?

I don't know what DV calls it but I give you my permission to call it stumble.

On both my Hondas (H22-A4, K20-Z1), when not on the VTEC cam lobe, staggers the valve opening on both the intake and the exhaust lobes, opening one slightly before the othe and closing the same one slightly earlier. I assume this is to create swirl.

Nice video what's your email address to send some head image to you