??Best Flowing Heads??
11-18-2001, 08:23 PM
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??Best Flowing Heads?? I was wondering who makes the best flowing heads. What are the best #'s you have seen? Not really talking bout rwhp, but the actual flow numbers.
Any help would be appreciated,
Marty
[ November 18, 2001: Message edited by: Marty ]</p>
Any help would be appreciated,
Marty
[ November 18, 2001: Message edited by: Marty ]</p>
11-18-2001, 08:26 PM
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Re: ??Best Flowing Heads?? ARE, MTI, GTP, RGR, etc...it all depends on whats done to the car to determine what kinda rwhp you will see....
Stage 2 is usually the way to go...
Stage 2 is usually the way to go...
11-18-2001, 08:57 PM
#3
Re: ??Best Flowing Heads?? The School of Automotive Machinists here in Houston has some badass heads worked up by their chief instructors. The LS6 heads on Judson's Orange SS flow 350 cfm at .600 lift on the intake side and exhaust flows around 245 cfm at the same lift. These are some of the better numbers around and one of the big reasons the SAM SS runs in the 9s naturally aspirated...especially for the weight they're carrying. <img src="images/icons/shocked.gif" border="0">
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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.
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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
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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
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
11-18-2001, 10:30 PM
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Re: ??Best Flowing Heads?? [quote]Originally posted by SpeedDemon:
<strong>370+ at .650. <img src="images/icons/smile.gif" border="0"> </strong><hr></blockquote>
Who?
<img src="images/icons/confused.gif" border="0">
<strong>370+ at .650. <img src="images/icons/smile.gif" border="0"> </strong><hr></blockquote>
Who?
<img src="images/icons/confused.gif" border="0">
11-18-2001, 11:16 PM
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Re: ??Best Flowing Heads?? [quote]Originally posted by Marty:
<strong>
Who?
<img src="images/icons/confused.gif" border="0"> </strong><hr></blockquote>
look at his website in his sig <img src="images/icons/wink.gif" border="0">
<strong>
Who?
<img src="images/icons/confused.gif" border="0"> </strong><hr></blockquote>
look at his website in his sig <img src="images/icons/wink.gif" border="0">
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11-19-2001, 10:33 AM
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Re: ??Best Flowing Heads?? [quote]Originally posted by SpeedDemon:
<strong>370+ at .650. <img src="images/icons/smile.gif" border="0"> </strong><hr></blockquote>
Hmmm.....How important is intake velocity when you throw a blower into the mix? I know flow is important but what about velocity?
<strong>370+ at .650. <img src="images/icons/smile.gif" border="0"> </strong><hr></blockquote>
Hmmm.....How important is intake velocity when you throw a blower into the mix? I know flow is important but what about velocity?
11-19-2001, 01:18 PM
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Re: ??Best Flowing Heads?? I can make a stock set of heads flow that. Just pull out the spark plugs and valves
<img src="images/icons/smile.gif" border="0">
But yeah, as was pointed out above peak flow by itself is really useless.
As a general axiom, a good set of heads will have good flow numbers, but a good set of flow numbers does not a good set of heads make.
Chris
<img src="images/icons/smile.gif" border="0">
But yeah, as was pointed out above peak flow by itself is really useless.
As a general axiom, a good set of heads will have good flow numbers, but a good set of flow numbers does not a good set of heads make.
Chris
11-19-2001, 01:30 PM
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Re: ??Best Flowing Heads?? I'd like to know more about blower heads though. With something forcing the air in at 6-20psi, wouldn't max flow be more important than velocity?
11-19-2001, 05:34 PM
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Re: ??Best Flowing Heads?? The ports are not large at all! You will never see a hogged out head comming from us. <img src="images/icons/smile.gif" border="0">
These are a radical head, and way out of most peoples price range, but none the less, that is what they flow. Our typical Stage II heads are very small and flow better than any other head that I have seen on the flowbench. This is not to say that there are not better heads out there, but I just have not seen them. Most shops that we see do exactly what was mentioned above...hog them out!!!
These are a radical head, and way out of most peoples price range, but none the less, that is what they flow. Our typical Stage II heads are very small and flow better than any other head that I have seen on the flowbench. This is not to say that there are not better heads out there, but I just have not seen them. Most shops that we see do exactly what was mentioned above...hog them out!!!
11-19-2001, 08:53 PM
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Re: ??Best Flowing Heads?? SpeedDemon can you post the flow #s? I don't know about the other guys but not many of us using .650" lift <img src="images/icons/smile.gif" border="0">
11-20-2001, 12:33 AM
#16
Re: ??Best Flowing Heads?? Peak Flow is interesting, but there are other considerations:
Velocity is important.
Swirl/mixture is important.
Flow rate at a usable maximum lift (IMO about 550 given the cams most of us run) is important.
Flow rate at mid lift is important too since the valve is at peak lift for just a relative instance.
Velocity is important.
Swirl/mixture is important.
Flow rate at a usable maximum lift (IMO about 550 given the cams most of us run) is important.
Flow rate at mid lift is important too since the valve is at peak lift for just a relative instance.
11-20-2001, 08:05 AM
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Re: ??Best Flowing Heads?? [quote]Originally posted by Matt98SS:
<strong>SpeedDemon can you post the flow #s? I don't know about the other guys but not many of us using .650" lift <img src="images/icons/smile.gif" border="0"> </strong><hr></blockquote>
The car that these are going on will go to .650+ . <img src="images/icons/smile.gif" border="0">
Flow numbers don't make you go fast. Even at that, we can manipulate the flow numbers to say whatever we want. I would not, but it can be done. The real test is bolting them onto an engine and taking the car down the track! If anyone in Houston would like to try them out, we are having an install sale coming up. Prices have not been set, but they will be well worth it!
<strong>SpeedDemon can you post the flow #s? I don't know about the other guys but not many of us using .650" lift <img src="images/icons/smile.gif" border="0"> </strong><hr></blockquote>
The car that these are going on will go to .650+ . <img src="images/icons/smile.gif" border="0">
Flow numbers don't make you go fast. Even at that, we can manipulate the flow numbers to say whatever we want. I would not, but it can be done. The real test is bolting them onto an engine and taking the car down the track! If anyone in Houston would like to try them out, we are having an install sale coming up. Prices have not been set, but they will be well worth it!
11-20-2001, 08:29 AM
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Re: ??Best Flowing Heads?? The best flowing heads???? The SAM heads are constantly evolving. Got a call from Jud the other day... There are better numbers coming with time.
Runner volume, bore size, valve size.... Be sure you compare apples to apples.
Runner volume, bore size, valve size.... Be sure you compare apples to apples.
11-20-2001, 08:49 AM
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Re: ??Best Flowing Heads?? [quote]Originally posted by Patrick G:
<strong>The School of Automotive Machinists here in Houston has some heads worked up by their chief instructors. The LS6 heads on Judson's Orange SS flow 350 cfm at .600 lift on the intake side and exhaust flows around 245 cfm at the same lift. ek: </strong><hr></blockquote>
Pat, are these numbers based on a 3.9" bore like most of us use? Or were the numberss generated using a larger bore?
What size valves are these heads using?
Those are some EXCELLENT numbers if they were generated using a 3.9" bore!
<strong>The School of Automotive Machinists here in Houston has some heads worked up by their chief instructors. The LS6 heads on Judson's Orange SS flow 350 cfm at .600 lift on the intake side and exhaust flows around 245 cfm at the same lift. ek: </strong><hr></blockquote>
Pat, are these numbers based on a 3.9" bore like most of us use? Or were the numberss generated using a larger bore?
What size valves are these heads using?
Those are some EXCELLENT numbers if they were generated using a 3.9" bore!
11-20-2001, 09:18 AM
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Re: ??Best Flowing Heads?? [quote]Originally posted by Raughammer:
<strong>
Pat, are these numbers based on a 3.9" bore like most of us use? Or were the numberss generated using a larger bore?
What size valves are these heads using?
Those are some EXCELLENT numbers if they were generated using a 3.9" bore!</strong><hr></blockquote>
What's happening John? I can't tell you if these heads were flowed on a 3.900" bore, but don't you think that would be kinda silly considering they are not going on a 3.900" bore??? For a typical Stage I, II, III head that is going on a stock bottom, yes, the bore needs to be 3.900" but if it is going on a 4.00" or better, it needs to be flowed on that size bore. After all, the same things hold true with a modded engine than a stock engine....Who cares what the heads flow except on the bore that they are actually going on. <img src="images/icons/smile.gif" border="0"> <img src="images/icons/smile.gif" border="0">
<strong>
Pat, are these numbers based on a 3.9" bore like most of us use? Or were the numberss generated using a larger bore?
What size valves are these heads using?
Those are some EXCELLENT numbers if they were generated using a 3.9" bore!</strong><hr></blockquote>
What's happening John? I can't tell you if these heads were flowed on a 3.900" bore, but don't you think that would be kinda silly considering they are not going on a 3.900" bore??? For a typical Stage I, II, III head that is going on a stock bottom, yes, the bore needs to be 3.900" but if it is going on a 4.00" or better, it needs to be flowed on that size bore. After all, the same things hold true with a modded engine than a stock engine....Who cares what the heads flow except on the bore that they are actually going on. <img src="images/icons/smile.gif" border="0"> <img src="images/icons/smile.gif" border="0">