What port height do you get out of them ?
Earlie A posted stock pinch height as 2.08"
2.08" x 0.95" = 1.98"
1.98" x 1,100,000 / cid = rpm, 367 = 5,935 rpm, 408 = 5,338 rpm
2.08" x 1.015" = 2.11"
367 = 6,324 rpm, 408 = 5,689 rpm
If you get peak torque around 1.3 lbs-ft per cid = 505 lbs-ft x 90% for roughly the torque at peak hp = 455 lbs-ft, 600 hp x 5252 / 455 tq = 6926 rpms. If you can get efficiency higher like 1.4tq:cid 600 hp = 6431 rpms less efficient obviously higher rpms.
Heads 290-300 cfm can obviously make...
What am I missing lol
The people who trash/hate on most youtubers on here
And?
I didn't really say anything negative about him or what he's doing.
Just disagreed with your quote here.
Why is putting it into perspective being a party pooper ?
At lot would be happy with his number's, it ain't a knock at him, I'm not a fan but I wish him all the best and more, but some seem to disregard any youtube video as a quick cash grab scams, but it's probably a slow tedious grind for...
Not the craziest of gains but if you buying bare heads, and planned on getting a valve job anyways this mod will get you what like 20 hp ? On a decent engine, what extra cost would be over buying 2.02" and getting a decent VJ ?
I wouldn't call those numbers being popular, A billion hours gets watched daily by over 100 million users, his channel has a decent size but small niche audience.
I guesstimated what a larger 2.14" valve's average curtain diameter would be and plugged it in but it only had a slight changed in the square foot curtain area was 0.00157 (from what I guesstimated) vs 2.055" 0.00151.
Had a pretty good feeling this was why but now I get it for sure even though...
273/318/383 threads generally get more views, it's pretty straightforward what to do with, 340/360/440 etc...most agree on what to do. Unlike 273/318/383 where a good chunk of peeps will say don't bother, than you got the velocity police saying you can build them but not very much etc.. There's...
I'm pretty sure they mill some off the main cap parting line to shrink the hole slightly then bore/hone back to original size, I think honing moves it more than boring if I remember right.
Here they compare these 3 cams in a 383 and the small HR gave the power of the larger FT while keeping the duration of the smaller FT
214/ 224FT
231/ 237FT
214/ 224HR
https://www.motortrend.com/how-to/camshaft-comparison-testing/
Dyno Results
383 Cam Test SuperFlow 902 Engine Dyno...
I guess that was the point I'm trying to make, any time we talk about heads, carbs etc.. Hysteric's and others will come in about atomization vaporization etc... But generally people are going by what carb cam heads cr cid etc.. Gonna give me the powerband I want not which one is possibly gonna...
I understand what your getting at, my point was more towards Hysteric's seemingly obsession nature with atomization, vaporization etc.. Above any other concerns. Which usually leads to everything got to be smaller.
My general point is other than a few basic options the average guy doesn't...
Like there's got to be an atomization range, from what a well tuned average performance engine is, to the bleeding edge of what highly developed multi million dollar race teams are doing vs what an highly competent engine builder can do. And how much R&D would it take to go from what an average...
I get it's critical, but beyond something being severely off, my point/question is the average well tuned engine out there leaving a lot of easiably gain power just laying in wait? Like how well is the average performance engine handling fuel atomization.
What I don't get about this obsession of atomization, is how far off optimal atomization is the average build?
Is there really a lot of power to be gain in the average built engine, just waiting for the owner to sort it out and can the average builder really do much about it? And if so is it...