The best flowing "Long Tubes" Facts???
Thanks for the info!!!!! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
Thanks
Anyone else or is it that the external engine section did not get much traffic in here today???????/
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I will post it soon.
Warren
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<strong>I'm putting on some Grotts on Mon. WOOOOHOOOO!!!
I can't wait!
Nick</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">What are Grotts?
Does anyone know a site where I can see a set.
JMHO,
Mike
CHECK THIS OUT!!!!!
http://www.ls1info.com/article.php?sid=189
Not sure if many folks have facts regarding flow numbers, etc. Seems to me that most people endorse the headers that they happen to have on their particular setup. Its certainly an expensive and time-consuming process to switch headers several times just for the purpose of seeing which one makes the most power.
So, with that said I would think that in theory (famous last words, right <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> ) Dynatechs with their merge collectors or 1-7/8 Grotts, which must have about the best flow capacity of any LS1 header I've seen, must be tops.
Here is what I was told
Dynatechs are too big for a 346
FLP"S even though they r esstentially Dyna's have a smaller collector and make better power.
Grots with there good tube design plus a 2.5in collector are very very good.
TTS again use a good tube design and a 2.5in collector.Excellent header...
MACS probably the best header for a 346 with its 2.5in collector and its small Y that makes tremendous velocity.
Do u see what I'm getting at.
A 2.5in COLLECTOR is the way to go on a 346
Along with a 2.5in Y to a transition merge of 3in.....
Dyno test were done to confirm this theory.
I lost 12RWHP going to STEPPED Dynas from the little old MACS.....
All I did was port the MACS and add the transition merge to the MAC ORY..
Do what u want but I trust these people and I've dynoed this stuff too.
IMO,GROTS,FLP,TTS,MAC are the way to go but only in the 1 3/4in and no bigger than a 2.5in collector...
JS
<strong>I hate to burst your bubbles guys but I've talked to countless SE racers,SAM engineering and a couple of his good friends.
Here is what I was told
Dynatechs are too big for a 346
FLP"S even though they r esstentially Dyna's have a smaller collector and make better power.
Grots with there good tube design plus a 2.5in collector are very very good.
TTS again use a good tube design and a 2.5in collector.Excellent header...
MACS probably the best header for a 346 with its 2.5in collector and its small Y that makes tremendous velocity.
Do u see what I'm getting at.
A 2.5in COLLECTOR is the way to go on a 346
Along with a 2.5in Y to a transition merge of 3in.....
Dyno test were done to confirm this theory.
I lost 12RWHP going to STEPPED Dynas from the little old MACS.....
All I did was port the MACS and add the transition merge to the MAC ORY..
Do what u want but I trust these people and I've dynoed this stuff too.
IMO,GROTS,FLP,TTS,MAC are the way to go but only in the 1 3/4in and no bigger than a 2.5in collector...
JS</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I strongly disagree. I have seen NUMEROUS 346s gain power when going from a 2.5" to a full 3" Y-pipe. Grots with 2.5" collectors would be a bonehead move.
The car picked up 5RWHP from 5400 to 6500 but lost 12RWHP/12RWTQ from 3900 to 5400...
The Stepped Dynas were using a CUSTOM 3in Y
The Macs were using a 2.5in Y w/a 3in MERGE.
This has been confimed by DYNO results
"Judson Massingill" from SAM also confimed this to be true,His results were a loss of 7RWHP/7RWTQ too going from a MAC/Custom Y to a STEPPED Dyna on a 10.70 car...
I agree with u guys that a 1 3/4 LT is better than a midlength but not as much as think on a 346 and a 3in Collector is too big...
I should say this is JUST AN OBSERVATION so u guys dont get mad,But it has been FACTUALLY tested.This is not hearsay.....
Talk to Patrick G if u dont believe me
JS





