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-   -   flow numbers ? (https://classracer.com/classforum/showthread.php?t=31824)

randy isaac 03-01-2011 03:14 AM

flow #s
 
for a sbc 041 head ( s/s ) just need to know what a good flow number is to see if i am at least in the ball park.

well over 200 veiws now...nobody willing share a little info??

RICK W 03-02-2011 08:06 PM

Re: flow numbers ?
 
I would like to know how much air flow to make 600 plus hp with 041 heads

pemracengine 03-03-2011 10:22 AM

Re: flow numbers ?
 
If you don't have 260cfm @28" you are not close. And $5000.

Stocker 03-03-2011 09:31 PM

Re: flow numbers ?
 
257, 597,hp. 485 lb.tq.

randy isaac 03-04-2011 02:30 AM

Re: flow numbers ?
 
Thanks Stocker.

Kenny Wigington 03-04-2011 06:39 PM

Re: flow numbers ?
 
You might do better asking if someone would PM you some of that info....

randy isaac 03-05-2011 03:29 AM

Re: flow numbers ?
 
any info sent in a pm would be good too. thanks for the suggestion.

Adger Smith 03-05-2011 01:50 PM

Re: flow numbers ?
 
There is more to getting that power level than a peak number.
I can show you the flow numbers from 2 different heads and one has a higher peak number, but the head with the lower peak number makes a lot more power. I have the dyno results, too. One head combination kicks the others butt by having a much higher average from .100 to peak. There are some programs that will give you numbers that are available on the net. The key to that statement is: "will give you numbers". I like the idea of asking the question. Interesting answers.

Adger Smith 03-05-2011 03:00 PM

Re: flow numbers ?
 
Oh!

RICK W 03-05-2011 04:28 PM

Re: flow numbers ?
 
So you should be able make good power if you have over 260 cfm with a good bottom end.

Bench Racer 03-05-2011 09:25 PM

Re: flow numbers ?
 
It always seems to tickle me when anyone asks for a average number for head flow or, what should an average 255hp 350 S/S engine make on the dyno. You would think people have asked for nude photos of your mom , or pics of little henry lol. For sure if I had found an additional 20hp I sure as hell would not tell that I have found it or what I changed to get it! As Adger said flow numbers don't tell the while story, or does a wicked peak hp number make a car quick when when the engine is a turd in the midrange. It would be nice to get some average numbers to know if you are in the ball park. Don Jackson

Jim Hanig 03-07-2011 10:12 AM

Re: flow numbers ?
 
Don avg on a set off 461s 205, this is average set. Jim Hanig 200 to 700 lift.

randy isaac 03-07-2011 09:24 PM

Re: flow numbers ?
 
Thanks for all the good info guys

pemracengine 03-09-2011 10:34 AM

Re: flow numbers ?
 
I agree. Mid lift numbers are very important since the lift curve sees them on both sides (opening and closing) and more time is spent there than at peak.


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