Yeah Smokey Yunick used the spintron decades ago. He new that things like valve springs work differently at rpm’s. It’s why we use different spring diameters, different spring material. Maybe One diameter coil has issues at a certain rpm, then Al the other diameter spring has a harmonic frequency at another rpm, then they can help cancel each other out. Science is really cool.!!!
So cool. At first, I was thinking - no headers, balancer, intake, etc - what the heck? Then I watched the video. I'm an old gearhead, and not a tech geek. But this stuff is amazing. GREAT video!!! And new subscriber!
Thank you all for the testing/development and sharing it with us. I’m building an ls/lt hybrid and I’m thinking about a custom ground camshaft… 6.0 GEN4 with 2021 Silverado 6.2 LT heads. 😅 currently only BTR has a camshaft.
This is going on a SBE. 9000 is asking a lot long term. We have 30 engine dyno pulls so far on it up to 8600 RPM. This combo isn’t limited to sbe stuff, or na stuff. It is available for all LT applications.
Isn't there less stress on the crankshaft and rods spinning from an outside source vs the combustion process putting more stress on the rods and crankshaft at the same rpm?
Has anyone run just the short block? Without a valve train? Just wonder if there is a limit to rotational mass, or imbalance, wonder at what rpm limit the rotating assembly has issues? Just a thought.
Just want to say my 5.3 L83 dogs stock and modified NA LS out 😂 I’m glad I did it the hard way now…. Different plus has some balls LT genV is the way to go 5.3 and 6.2. To be honest the only lightly modified car to beat me has been a 6.2 LT. Look through my channel and you can see the race for yourself. Glad I seen this video. Back to the drawing board 😂
There really isn't alot of difference in them. The compression ratio and vvt helps to flatten the tq. If your lt is just out right dogging a ls....then someone fucked their ls up
@@HioSSilver1999 I don’t know my friend but maybe I just have a freak of nature or something but I’ve race a cammed 5th gen camaro 6.0 at the track and kicked his ass my brother owns a stock 14 camaro SS 6.2 kick his like it’s nothing, I’ve raced a C6 on the highway and made him exit 🤣 392 scat too… and to make that even worse i have 22” wheels on my camaro…🤷🏾♂️ I just now like yesterday put it on E85 and I have to get some transmission work but going to bolt on a LT2 intake and a bigger throttle body so I should be neck and neck with the LT1 next year…
@@J2A61 hell we beat cammed 5gens with just a bolt on 5gen....cams don't mean shit most of the time. We went 11.5@120 with a bolt on 5gen. Then did a c6 and went 10.5@132. My own bolt on ls6 went 10.7@130ish. The people you're racing don't know wtf they're doing if your l83 camaro is within 3 busses.....or you have something going on you're not telling. Like a gutted car, power adder or massive gear in a short race. Apples to apples or it doesn't really mean much.....definitely not worth bragging about.
Yeah Smokey Yunick used the spintron decades ago. He new that things like valve springs work differently at rpm’s. It’s why we use different spring diameters, different spring material. Maybe One diameter coil has issues at a certain rpm, then Al the other diameter spring has a harmonic frequency at another rpm, then they can help cancel each other out. Science is really cool.!!!
Wasnt his called a Smoketron?
High rpm n/a stuff is my jam! This would be a killer set up in a 10 speed 1le or rs Camaro with the V8 option
You know you're watching true southern people when they have to use subtitles in the videos! 👍
FAX
Great to be able to analyze the working results of a variety of combo’s via digital and laser sensors…
Real game changer!
So cool. At first, I was thinking - no headers, balancer, intake, etc - what the heck?
Then I watched the video.
I'm an old gearhead, and not a tech geek. But this stuff is amazing. GREAT video!!! And new subscriber!
Thank you all for the testing/development and sharing it with us. I’m building an ls/lt hybrid and I’m thinking about a custom ground camshaft… 6.0 GEN4 with 2021 Silverado 6.2 LT heads. 😅 currently only BTR has a camshaft.
Same thing I’m about to do with my L92 6.2. Im adding LT1 heads with custom cam
Wow, that's incredible!
Sure is great information to know!
Thank you!!
And done with pushrods!❤
Sweet sweet sweet Chevy powaaa!!🇺🇲🇺🇲🇺🇲💪💪💪💪
Amazing work, guys! 👏👏👏
is the stock bottom end, e.g. pistons and rods capable of 9000RPM?
I doubt it. They're pretty stout, but 9000 is a LOT of RPM. I would definitely want a forged piston and probably a forged rod at that RPM
Nobody is bolting those heads and using that valve train on a stock bottom end....
This is going on a SBE. 9000 is asking a lot long term. We have 30 engine dyno pulls so far on it up to 8600 RPM. This combo isn’t limited to sbe stuff, or na stuff. It is available for all LT applications.
@@Stevens7983 Im really just interested in high revving N/A stuff. I guess it would be recommended to have forged pistons/rods at 8500+rpm?
Me encantó su video y toda su información 🔥👍
Wow congrats !! Makes my solid roller 8000 rpm LS looks dum
That baby was humming
Put this setup in a car. Would be very interesting.
Its going in a 2700 lbs 6th gen with a TH350 3 speed trans.
how are you taken a psi 1513 spring to over .700-.725 lift? what was installed height?
We have to use longer than stock valves, and on top of that they are 7mm stems to keep them ultra light.
so what is installed height? they appear to have 160 at 1.800 are you going to like 1.850 and dropping seat pressure?@@Stevens7983
I need parts list for this setup
Isn't there less stress on the crankshaft and rods spinning from an outside source vs the combustion process putting more stress on the rods and crankshaft at the same rpm?
I don't know the answer to your question, but they're only spinning the valve train here, not the rotating assembly
@@C6Z_Bob
Oh ok
@@C6Z_Bob What? Dude the crank is spinning.
Did I miss it but did they end up using the 903 lifters?
No, we used the .842. The .903 was not any better in this application
So the Johnson 842 lifters held up better than the Johnson 903 lifters, I’m going off what u said u were using that held up to the max
There were no performance differences between the 2.
@@Stevens7983 alright! 👍🏾
Is the gen 5 sbe more capable than the gen 4 sbe ?in terms of rpm?
About the same. We have turned both upper 8000s
Very cool
ok ... please excuse my ignorance ... but ok this engine will spin beyond 8K ... I want to know WHERE does the power band begin to fall off
That depends on a lot of different factors, the cam and intake manifold being the most important.
This particular setup on the engine dyno peaks at 8300 and hold on well to 8600 ish.
Holy wow 🔥🫡
Has anyone run just the short block? Without a valve train? Just wonder if there is a limit to rotational mass, or imbalance, wonder at what rpm limit the rotating assembly has issues? Just a thought.
Just want to say my 5.3 L83 dogs stock and modified NA LS out 😂 I’m glad I did it the hard way now…. Different plus has some balls LT genV is the way to go 5.3 and 6.2. To be honest the only lightly modified car to beat me has been a 6.2 LT. Look through my channel and you can see the race for yourself. Glad I seen this video. Back to the drawing board 😂
There really isn't alot of difference in them. The compression ratio and vvt helps to flatten the tq.
If your lt is just out right dogging a ls....then someone fucked their ls up
@@HioSSilver1999 I don’t know my friend but maybe I just have a freak of nature or something but I’ve race a cammed 5th gen camaro 6.0 at the track and kicked his ass my brother owns a stock 14 camaro SS 6.2 kick his like it’s nothing, I’ve raced a C6 on the highway and made him exit 🤣 392 scat too… and to make that even worse i have 22” wheels on my camaro…🤷🏾♂️ I just now like yesterday put it on E85 and I have to get some transmission work but going to bolt on a LT2 intake and a bigger throttle body so I should be neck and neck with the LT1 next year…
@@J2A61 hell we beat cammed 5gens with just a bolt on 5gen....cams don't mean shit most of the time.
We went 11.5@120 with a bolt on 5gen. Then did a c6 and went 10.5@132. My own bolt on ls6 went 10.7@130ish. The people you're racing don't know wtf they're doing if your l83 camaro is within 3 busses.....or you have something going on you're not telling. Like a gutted car, power adder or massive gear in a short race.
Apples to apples or it doesn't really mean much.....definitely not worth bragging about.
You guy said a lot without saying nothing 😂🤣
Come on man, what parts did you use🤷🏾♂️
The parts in the package lol. Jesel rockers, Johnson lifters, our cam and heads.
Jesel rockers not Jezel.
Sorry, I will make our pronunciation department aware of this grave error!
internal combustion is eol - the way it is
interested in what rockers and the lifters did.
The Mantons limited us about 600 rpm lower. The lifters performed the same as the different pushrods did. (Ryan at GPI)