How To Port LS3 Heads Part 1

Рет қаралды 4,620

Eric Weingartner

Күн бұрын

Пікірлер: 45

@shelbyavant5081 6 ай бұрын

Thank you so much, Eric. It's a shame more of these people don't realize what they're getting here for free.

@Alaska_Engineer 6 ай бұрын

Even as a “Ford Guy”, I appreciate all that you share with us. Still waiting for you to teach us how to port cast iron 😂

@gisaac3779 6 ай бұрын

Hell, I could have made this video in 10 seconds!!!!! “Get a box, put the heads in the box, send them to Eric” done… 😂

@joemathews278 6 ай бұрын

I think this video was leaning towards this lol. Eric is letting everyone know this isn't a easy art! You will spend as much in tooling as just paying the man to do the job right the first time. He truly is a superman just on aluminum not cast iron lol.

@chriswise1232 6 ай бұрын

I took my last set of LS heads to the most reputable head shop in town. I asked for a performance valve job. I got them back with a 3 angle 😢 The lesson here, ask questions beforehand. Oh, and keep the speed down on those longer shanks.

@christopherc3017 6 ай бұрын

Thank you for teaching us how to do this at home. I do a lot of cutting and grinding on stone and can’t wait to try this on my own.

@georgedreisch2662 6 ай бұрын

Now I’m imagining Eric speaking in his best Bob Ross voice, now we’re gonna grind a happy little throat profile…😜 Seriously, this ought to be good, especially for Eric relating his thought process and reasons why he does what he does, as he goes.

@mikkokuorttinen3113 6 ай бұрын

Thank you Eric for the instructional! I'm really excited to watch and follow your porting process thoroughly!

@WildEngineering 6 ай бұрын

Hell yeah brother, thanks for sharing the knowledge!!!!

@lancegibbs7506 6 ай бұрын

You should make cylinder head measuring tool kits, engine building/ measuring tool kits, porting bits/rolls/exc kits, and sell them on your website! I know i would be interested in alot of that stuff. Im 29 and have been working on my own crap since i was 10yrs old but have never had the tools to dp the job precisely and correctly. And i would absolutely love to be able to buy everything i need to do it all correctly and precisely in a kit or 3. Love your videos man! I try to donate to dyno stuff as much as possible! Looking forward to the 408 dyno mule, as i am slowly building something very similar with more bore, and less stroke turning 7200ish with a 7600 limiter! Ive learned so much from your videos, your efforts is very appreciated!!

@edpetrocelli2633 6 ай бұрын

No truer words have ever be spoken about patience, I dont have it and I don`t even try porting heads anymore

@Fk8td 6 ай бұрын

Thank you so much for saying about the CNC heads, not being better than a hand ported head because there’s a big manufacture I hear in my line of work that are no where near as good. All of my cylinder heads out perform theirs not only in efficiency as far as total fuel consumption and power output by at least 20%. In the direct injection world it is very different in port cylinder, head and port injection or corporation and this one company chops away at the port like it’s important injected had destroys the throttle and eats 11% more fuel and loses horsepower . I really do appreciate the amount of hours that going into certain cylinder heads .

@stevewells5163 6 ай бұрын

Great explanation! Can tell you were a teacher 👍🏻

@rickybellamy8191 6 ай бұрын

Amen to that! Once you hit that second cylinder head and you are narrowing down valve guides or you're checking that throat percentage for the 18th time, it's mind numbing!

@fc-pilotpaulmiller5427 6 ай бұрын

Thanks for taking the time to walk us through this. Great info you are sharing.

@cassandraclark8568 6 ай бұрын

After porting heads for well over 30yrs, I've learned that it takes 2 valve jobs minimum on any performance work & especially after removing material in the bowl, things move around a hell of a lot.

@donaldhalls2189 6 ай бұрын

Certainly not for the faint harted, thanks for sharing, all the best to you and your loved ones

@flinch622 6 ай бұрын

All cnc means is there's a math map.... of somebody's finished handwork, so it can be replicated. CAD work can bring a good casting into existence, but it is always somebody with a flowbench that will get it right [we hope]. Maybe I missed it, but your thoughts on what to tell machine shop to go for on throat % when they do their valve job?

@chevyrc3623 6 ай бұрын

The valve job thing even if I wanted to port my own heads my local machine only believes in his radius valve job and it looks close to like a 3 angle it doesn't cut on to the seat as much as your so yeah for me sucks if I ever want to port which I don't want to port I know myself I will suck at it. But I appreciate sharing your video on how to port a LS3 head. Any video you made I learned a lot from you

@briantayes2418 6 ай бұрын

This is going to be a great set of videos.

@RussellCompton-fh3gr 6 ай бұрын

thanks for this series

@dondagy9109 6 ай бұрын

So i will say, i think the tight flutes work better on ferrous, iron, and the open flutes work better on non ferrous, aluminum. And use a small wire brush to clear chips out of the tool flutes. Just thought id add to your already awesome instructions. Edit: goodson sells awesome head supplies. Everything from tools to epoxy for reshaping ports. 2nd edit: almost all gen 1 sbc heads already have that rocker arm stud all the way through to the runner, and seal those the same as you just described.

@RockingJOffroad 6 ай бұрын

Speaking of dial calipers, I have recently abandoned the use of the electronic calipers due to even my expensive Mitutoyo digital calipers give inconsistent readings with a variance of as much as .005 inch. I know that .005 doesn’t mean much to a head porter, but as a machinist, .005 is the difference of a good part and one that goes in the scrap bin! As far as harbor freight calipers go their dial calipers should do fine except for the valve stem sizes and valve guide sizes. If you use the H.F. Calipers use a decent micrometer for valve stems and guides.

@GrandPitoVic 6 ай бұрын

Cool deal brother!!!! Great video as always. I look forward to these videos. I am doing my first Ls swap. I bought a set of low milage 821 heads. Bare, but they were crazy cheap. Prob would have been cheaper to buy a full set. By the time I buy all new valves lol. N/A build. Not sure if I should even port the heads. I have a BTR Stage 2 V2 221/24× .619/.617 cam. I'm looking around 500+ at the crank. I'm not sure porting them would help much. I'm not spinning the engine to the moon. Lol.

@peteJoseph-x3h 6 ай бұрын

Eric, you might want to explain that those aluminum cutter carbides really “chunk” cut ports and create divots that need to be smoothed out, double cut steel cutters are less apt to over cut, they load up but with a little wD 40, they don’t. More control, slower port job.

@GroovesAndLands 6 ай бұрын

Hint: Boelube

@65mustang393 6 ай бұрын

Great video Eric!

@DSRE535 6 ай бұрын

That actually would be an interesting test take a set of CNC ported heads and put those up against a set of your hand ported heads

@ttony6538 6 ай бұрын

Great video! Looking forward to the rest! Eric, what type of thread sealer do you like to use on the rocker arm and valve cover bolts? Thx again

@Torquemonster440 6 ай бұрын

I'm curious as well.

@jamesandannschmitt6835 6 ай бұрын

Thank you.

@ericsmcmahan 6 ай бұрын

Eric Weingartner, if I am shooting for 88% on the throat, would it be a good idea for me to use a cutting tool to scribe a line to 86% so that I have something to cut to?