Rockers Part 1 

From one Steve to another, I would like to thank you for this great series. Again thank you!

Wonderfully explained and illustrated as always.

Great info Steve! Thanks

That hemi head is a gorgeous piece of work.

I love all the new technology I can't afford to utilize it but I can sure like it!

Nice to have all this information available. Thanks 🙏 for doing these 👍💯👑

As a machinist and programmer that hemi head is some machining porn. Awesome work and amazing design. Thanks for the explanation Steve 👍🏻

Amazed at so few comments. This ought to be thousands. The info and descriptions far surpass anything that can be found in magazines or books. I get what your saying even though you're building engines with high HP. It would be fun to see you do a short series on building a mild daily driver engine. What's important and what's not. Let's say a 350 hp Chevy all block. Is it worth buying 1.6 rockers? How about stock GM rocker arms, roller tips or full roller rockers. Maybe mild bowl porting tips. How about leaving a stock intake valve and changing the exhaust from 1.5 to a 1.6. .......yeah I'm rambling. It would be fun to hear your advice on improving HP or just tinkering with the old school stock Chevy engines.

5👍's up Steve M thanks for all year of great innovations creations outright mind-boggling horsepower and torque from a normal engine

That hemi rocker setup is a work of art! Excellent explanation as usual steve thank you!

I feel like if I could just sweep the shop floor for a week or two I couldn’t help but learn something in Steve’s shop.

Welded stands for the win. Being it sportsman or pro series. Tack them together. Just make damn sure nothing warps when it's welded. I actually have a fixture for welding my bbc stands which clamp it all down in so many places that only what you weld is exposed. Works a treat:)

Steve, I truly enjoy you tech tip's. I learn something new each and every time. Thanks.😊

Excellent illustration. Never built any type of LS, but I hear from builders that guys can somewhat easily pump up the power on a stock type LS, and are mystified why the valve train self destructs.I think I see why now. I also understand the limitation on stud mount rockers as well. This is good stuff.

You take the "Rocket" out of "Rocket Science" and suddenly it becomes, common sense. Great stuff!

I can't wait for part 2.

That SMX head is sweet!

Thanks for the valuable information,

Thanks for the videos your answering questions truthfully where others have avoided the truth

Love watching your videos definitely my idol hope to do the things you do one day !

Great content thanks for sharing

I'm jealous. I wish I could take my dog to work with me. Kudos to you sir. You're doing it right.... oh and you have amazing content in your videos. I keep learning with each one.

Great tutorial Steve!

Great information

Manton is the best in my opinion, they are really pushing the edge of valve train technology

steve great breakdown....

nice one cyrill

A possible 'fix' to the Hemi problem would be pre-loading the unsupported area through the valve covers, kinda like the differential covers that have bolts to preload the carrier bearing caps.

Cool hemi heads

... Pretty sure I'll never have to worry about rocker arm deflection on a 4.9 Hemi 10,000hp engine. lol ,...but it was an interesting video.

✝️🇺🇸👍 hope everyone is having a blessed day Thanks for the info and video

Another great video. Possibly stupid idea regarding supporting the Hemi rocker stand; could you make a valve cover that came down from above and supported that center area from the top? Maybe a snubber bolt.

Damn learn something every day

Hey Steve how much preload should a ls7 lifters have? Is 3/4 turn from zero lash enough preload or should I get a longer pushrod to get closer to 1 turn of preload? Had an engine build and the rockers are noisey after 10 mins of running almost like the pushrod isn't long enough but the engine builder says it's correct

Those Hemi rocker arms are freaking BEEFY

Valve cover girdle for that 4.9 hemi may help the center area

Sure is some fancy teeter totter

Good shit

such detail thank you sir

With equal displacement, we know that SOHC and DOHC motors are more efficient than pushrod (OHV) motors, they flow more CFM, and they can safely operate at much higher rpm. But until Steve's recent videos, I didn't know about the potential problems that can occur with a pushrod's valvetrain. The technical details that he talks about, in terms of the incredible loads and forces that each part of the valvetrain has to endure and the ways in which those parts can be problematic, really clarify and help to further understand why SOHC and DOHC are superior engine designs in most cases. *_This is NOT hating on pushrod motors! They definitely have their advantages in some applications!_* If they didn't, Ford wouldn't have shocked the "car-world" and developed the brand new 7.3L "Godzilla" after ending production of all pushrod V8s 20-years ago.

I really wanna know more about that hemi head and that crazy rocker stand.

Could you have a support come down from the valve cover to support the centre of the rockers on the hemi head?

What if you use a smaller cam.

Very interesting. Maybe why so many over head cam versions are being engineered. And on the hemi. Those areas you pointed at between the rockers. Coukd the be bolted to the valve cover. Or hung from the valve cover to support it more. Or still not much more you can do about it?

On the mopar cradle, is there space inside to put more webbing/bracing to help sturdy it up? Then maybe curve it a bit so any oil will drip into a return hole?

Thanks for the explanation. You cant buy lessons like this... How do you feel about the BTR Shaft mount system for the LS Guys? Ive been eyeing it up but people say its uneccasary. But i also feel like you cant have too much valvetrain rigidity....

I think it's great that you are expanding beyond the 481X and getting into the Hemi as well but the question is will you expand into the 4.5 and 4.6BS Small Block and also all the different bore space BBC stuff as well and maybe even an all billet LS?

Back in the 80's I had to put my full body weight on the cylinder head to keep the lifter rev kit seated in place and try to button down the head. My things have changed ....

And here is where the advantages of OHC start to show up.

Steve On the Hemi rocker stand Will it be beneficial to use a steel or titanium strap between the rocker shaft bolts in the center of the rocker stand where the intake and exhaust shafts attach You pointed out the lack of support in the center where you need pushrod and spark plugs space

Really great info, and that hemihead. Wow!! How much load/hp range for each type of setup? Not worry for my motor (stock389) but still curious. 👍🤠

Another great vid from Steve. So when did Terry start making rockers? I had no idea.,🤔

Steve, I would like you to produce a video about the camshaft events of a turbo engine. That would be great from someone who knows.

Excellent informational videos have a brand new set of 14 degree Big Chief 816 single type stands with somebody made at least a one piece bar type stand for the single Bolt and the exhaust Stan's so at least tie them all together at least the intake has 2 bolt holes in each stand even though they're brand new fully cnc-ported what's all of the best hardware we'll have to figure something out if you have any ideas please let me know when I have built some Ford Roush Yates headed small blocks for any use I welded pieces of steel between them to tie them together with no failures naturally 15 plus years ago or better about when I had these Big Chief heads I bought brand new a few years after that basically everything went oval port and one piece intake Stan's what the exhaust whole thing to those also just stay like the ray Franks now known as a profiler

I always thought they were called Posi Locks. Makes sense to me as opposed to Polly Lock. I know it makes no difference what you call them but i was interested to see what is the correct terminology.

Nothing looks goofier than hemi pelican head rockers

Re the HEmi if un-supportted aluminum is a worry, use steel.

Hi Steve Off topic but I would like to hear your thoughts as I think it will affect your business Just read articles the government here in Australia are pushing for electric cars And eliminating combustion engines as they put it in about 15 years Not sure how much the USA will be affected

I not saying the jesel doesn't do what you are saying but I ran a.set of sportsman on 1.625 springs for.3 years and never had a issue on big block chevy world heads pulling out

So it looks like the Chrysler set up is the most rigid stock set up😬

*spots a ford head* Steve... Please tell me you actually build fords, and might show a video or two for us that are sick of ls content. I know that you probably will not touch on OHC/DOHC setups, since it's probably not in your wheelhouse for building, but a pro's and cons video to both pushrod and ohc motors might be a good idea.

Whoop Whoop Whoop Whoop Whoop Whoop Whoop

Getting famous off of comments day 344, so I can live the dream, live every day like it’s your last🤙🚀