Collective Head Flow Numbers Table
Originally Posted by RyneZ06
yes i have seen these heads flowed in person, they do flow those numbers on a superflow 600, they do in fact flow those numbers, killer heads. i am sorry you havent seen a head flow that well with that small of volume, i guess, you dont deal with qualified/or compedent head porters. these will make killer power with this amount of flow and velocity.
Brandon
Wow....this thread turned into a trainwreck....LOL
Brandon....The numbers were bogus and you were right in your assumptions that they were.
Chris/Ryne....cut DDN some slack....LOL....His intentions were good.
And the point I was trying to make much earlier (that Chris was trying to make as well....with a little more flair I think...) was that flow numbers that are gotten from different sources should never be put together in any type of a spreadsheet or comparison....that could be potentially more misleading than no information at all (and could do more harm than good assuming they influenece someone to make a purchase based on unverified information).
Chris and Ryne made up some BS numbers and had they not been a little overinflated (which Brandon picked up on), they might have made the spreadsheet skewing the results in a way....they did it to make the point that without the same test equipment, the numbers are just numbers and really just make for a worthless comparison.
I decided to start that flow thread along time ago because I was frustrated how everyone claimed to own a pair of cylinder heads that flowed 320 CFM's (and the guys that dropped some coin of course all had 340 CFM heads
) when the reality was that most heads I had the opportunity to see where lucky to break 300 CFM. Keep in mind the flow thread only represents the larger, better flowing heads in the countless dozens I have had the opportunity to test over the last 3 years and as you can clearly see the "320 club" is pretty elite (unlike the Internet would leave you to believe), and the heads that went more than that are even farther and fewer between. The main reason for my posting all that info was to try and bring people back down to earth about cylinder head flow and whats really out there (try to show them the "real world"....LOL). Consider the power we have seen from many of the 205 AFR combo's and the fact that it flows 295-300 CFM @ .600 on a small 3.900 bore. Read between the lines....an honest 300 CFM's can make more power than you think and there's more to making power than just big peak flow numbers (a strong curve in the low and midlift region, quality" of flow, airspeed, cross section, etc.)
Anyway....this was suppose to be a quick reply to clear a few things up. As usual, I got sucked in.....LOL
Catch you guys later....
Tony
Brandon....The numbers were bogus and you were right in your assumptions that they were.
Chris/Ryne....cut DDN some slack....LOL....His intentions were good.
And the point I was trying to make much earlier (that Chris was trying to make as well....with a little more flair I think...) was that flow numbers that are gotten from different sources should never be put together in any type of a spreadsheet or comparison....that could be potentially more misleading than no information at all (and could do more harm than good assuming they influenece someone to make a purchase based on unverified information).
Chris and Ryne made up some BS numbers and had they not been a little overinflated (which Brandon picked up on), they might have made the spreadsheet skewing the results in a way....they did it to make the point that without the same test equipment, the numbers are just numbers and really just make for a worthless comparison.
I decided to start that flow thread along time ago because I was frustrated how everyone claimed to own a pair of cylinder heads that flowed 320 CFM's (and the guys that dropped some coin of course all had 340 CFM heads
) when the reality was that most heads I had the opportunity to see where lucky to break 300 CFM. Keep in mind the flow thread only represents the larger, better flowing heads in the countless dozens I have had the opportunity to test over the last 3 years and as you can clearly see the "320 club" is pretty elite (unlike the Internet would leave you to believe), and the heads that went more than that are even farther and fewer between. The main reason for my posting all that info was to try and bring people back down to earth about cylinder head flow and whats really out there (try to show them the "real world"....LOL). Consider the power we have seen from many of the 205 AFR combo's and the fact that it flows 295-300 CFM @ .600 on a small 3.900 bore. Read between the lines....an honest 300 CFM's can make more power than you think and there's more to making power than just big peak flow numbers (a strong curve in the low and midlift region, quality" of flow, airspeed, cross section, etc.)Anyway....this was suppose to be a quick reply to clear a few things up. As usual, I got sucked in.....LOL
Catch you guys later....
Tony
6600 rpm clutch dump of death Administrator
Joined: Dec 2001
Posts: 4,983
Likes: 13
From: Texas
Here is an html version to look at.
http://users3.ev1.net/~black_ops/hea...2009-09-03.htm
I'd only pay attention to the numbers which are from TR, as they are independant numbers.
Some of the other "inflated" numbers are IMHO B.S., you have to look at them as a "trend" for the heads, and as an example. Once you subtract the reality factor in the heads you can see where the low and midlift numbers stack up.
http://users3.ev1.net/~black_ops/hea...2009-09-03.htm
I'd only pay attention to the numbers which are from TR, as they are independant numbers.
Some of the other "inflated" numbers are IMHO B.S., you have to look at them as a "trend" for the heads, and as an example. Once you subtract the reality factor in the heads you can see where the low and midlift numbers stack up.
TECH Regular
Joined: Nov 2001
Posts: 470
Likes: 0
From: Plano, Tx.
Originally Posted by Patrick G
Brandon, my comment was specifically aimed toward exceeding 300 cfm on Thunder's SF 1020. For whatever reason, their bench flows way below most other people's SF 600s. FWIW, my milled AFR 225s flowed 316 on AFR's SF 600, but only 310 on Thunder's bench. Any head that flows over 300 cfm by .600 on Thunder's bench usually makes killer power.
Originally Posted by Cobraeater
Patrick, Did you hit 316 on AFR's bench and 310 on Thunder's bench at .600 lift or were the heads flowed to .650 lift?
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
