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Woke up and what was said still holds merit. What is the CSA for the Mamo head? Let's talk heads... You say you have a program....
Top of my head 2.85 csa and a 7200 curtain.....How Real head guys talk not this BS seen.
Dyno's and CC for how to pick a head only on here ....
Smoke, you need to sleep more. Binge drinking and posting all night is just weird. Concerning the CSA for the MMS 265, you said several weeks back that you knew more about the head than the owners do. I asked you in a post afterward what you thought about the CSA of that head, and you never replied. It’s pretty incredible that Tony can get the CFM he does through a port that size along with that CSA. I’ll say it again, at the end of the day, all that matters is CFM. Without air you cannot make power or rpm. Regardless of size. CSA and CC’s are simply measurements of size. Period. Don’t overthink The Whole CSA thing. It’s not nearly as important as your making it out to be. Let’s leave this alone in this thread. No need mucking up this one also. You have a build thread that you can discuss this in.
I’ll say it again, at the end of the day, all that matters is CFM. Without air you cannot make power or rpm. Regardless of size. CSA and CC’s are simply measurements of size. Period. Don’t overthink The Whole CSA thing. It’s not nearly as important as your making it out to be. Let’s leave this alone in this thread. No need mucking up this one also. You have a build thread that you can discuss this in.
We can start a new thread to discuss further so as not to derail either build thread, but I haven’t seen very many professional head porters that worry more about CFM than CSA except to sell heads to the masses. Shape and size (CSA) are usually thought to be the most critical design aspects and most don’t agree which is more important between those two.
We can start a new thread to discuss further so as not to derail either build thread, but I haven’t seen very many professional head porters that worry more about CFM than CSA except to sell heads to the masses. Shape and size (CSA) are usually thought to be the most critical design aspects and most don’t agree which is more important between those two.
Good idea. I started one to hopefully avoid more derailment. It seems like a hot topic.
Here is the graph. Not bad for an N/A engine with a hydraulic roller cam.
700HP @ 7,000 is where they finished it over at Westech. This is obviously not the manifold we are using when the engine goes in so I am to pick up there too after another tune.
This sound dumb but I hope it idles nice with that .720 lift cam. They are putting the idle @ 850 and this build was centered around “basically” being able to be a daily driver (manage traffic, have A/C, etc...)
My 1 3/4 LGM longtubes may cost me a bit but thats OK.
2,995 LB FRC Corvette
4:10 gears
Mcloud RXT
Dewitts
AP Racing Brakes
lift means nothing with regards to drivability. Higher lift lines actually improve idle quality.
693/585 is where it actually landed I just learned. Sorry about that !
Lift is modest by LS7 Standards (and this is a 434). They asked me not to share but think low 24X & I can share lift it is .720/.675. it is all in how you set up the valvetrain, etc to manage the lift you would want out of a solid roller but with a hydraulic as I did not want to have to adjust/maintain. It is all super cheap too haha. Lift is good with little downside as long as you manage for it — as I understand.
I like the valve covers.
Last edited by Mirek Again; 06-07-2019 at 08:30 PM.
Reason: Add pic; fix spelling/Hp
You're going to lose going back to the MSD intake... it will peak around 6400 and probably drop 20HP. It already has a ton of torque. You're basically at 500ft/lbs at 3500. That will go up with the MSD. And the LG headers will push the midrange up more too at the expense of 6000+ power.
I'm surprised that wasn't closer to 730HP at least. Even though the cam isn't huge, those heads are flowing well and the cam is designed to make use of them... especially with a Victor/GMPP Carb intake on top (Can't tell which).
I'm curious, can you tell us which intake that is? I dynoed my 434ci with 2 single-plane intakes, and I'd like to know which was used here for comparison. It honestly doesn't look like either of the ones I'm familiar with (GMPP or Super Victor) nor the Mast. But it does look like it has a 4500 carb opening on top based on the size of the carb they used for the testing.
Your combination is a very interesting comparison to my own as it sits on the dyno. I've posted a build/dyno thread here before if you're interested. My solid-roller cam is pretty comparable to your hydraulic roller based on the specs you've posted. I want to go back and re-read this thread when I have a bit more time, but do post about the intake if you know/can...
05-23-2019, 08:22 PM
