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Old 10-18-2023, 08:30 AM
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slowbird slowbird is offline
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Originally Posted by Dragncar View Post
Took me a bit. If he says it, I believe it.


https://forums.maxperformanceinc.com...54#post5689654

I also found one of my old posts where I mention he has a CNC program that went 459cfm. So he had to have told me that.
They don't flow that without moving things, none of it matters because there is only 1 set of Marcella HP heads out there and they won't make the power a 460cfm head should.

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Old 10-19-2023, 03:42 AM
Dragncar Dragncar is offline
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They don't flow that without moving things, none of it matters because there is only 1 set of Marcella HP heads out there and they won't make the power a 460cfm head should.
Why in the world would you doubt that guy ? Because your guy could not beat it ?
How do you know there is only one set of Marcellas High Ports out there. I mean, I do not know for a fact that there is, but I believe Scott Brown owns the CNC programs.
If the man says he did not move the valve why would you doubt him ?
Not sure why its so hard to believe.
Mikes E heads went 414cfm.
Thats 134cfm over as cast (280cfm)
High Ports as cast 330cfm.
Johns HPs 459cfm.
A difference of 129 cfm.
Thats a little less that his difference with E heads.
Seems reasonable to me.
Looking at some of those old ,great threads maybe you have a old ax to grind ?

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Old 10-19-2023, 01:47 PM
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slowbird slowbird is offline
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Originally Posted by Dragncar View Post
Why in the world would you doubt that guy ? Because your guy could not beat it ?
How do you know there is only one set of Marcellas High Ports out there. I mean, I do not know for a fact that there is, but I believe Scott Brown owns the CNC programs.
If the man says he did not move the valve why would you doubt him ?
Not sure why its so hard to believe.
Mikes E heads went 414cfm.
Thats 134cfm over as cast (280cfm)
High Ports as cast 330cfm.
Johns HPs 459cfm.
A difference of 129 cfm.
Thats a little less that his difference with E heads.
Seems reasonable to me.
Looking at some of those old ,great threads maybe you have a old ax to grind ?
Because I don't believe everything I read. I know someone that deals with Scott Brown alot. I know Dan got about same cfm from wide port eheads, I know Dan's pp head flowed more than Marcella pp head, I know that Dan spent a LOT of time over 8yrs with my HP heads.
No matter what you want to believe Marcella HP heads haven't out ran a single head yet unless you race flow benches, which I don't.

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