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The best flowing "Long Tubes" Facts???

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Old Aug 14, 2002 | 09:55 PM
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Default The best flowing "Long Tubes" Facts???

Just wanted to see what yall have been able to achieve with your long tubes. Wanted to also see in yalls opinion which flow the best and best numbers.....

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" />
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Old Aug 14, 2002 | 11:07 PM
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Default Re: The best flowing "Long Tubes" Facts???

here is some info to get you started..
exhaust theory ..
http://ls1info.com/article.php?sid=166
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Old Aug 15, 2002 | 06:25 PM
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Default Re: The best flowing "Long Tubes" Facts???

Alright guy's again, Does anyone here on the board know in there opinion who makes the best flow long tubes? Have gotten the best numbers. I know that it all depends on what set up your running but would like opinions.....

Thanks
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Old Aug 15, 2002 | 06:33 PM
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Default Re: The best flowing "Long Tubes" Facts???

the FLP's are the ones i would get if i had to do over. the hookers look nice. don't get me wrong my slp's are sweet , but i wonder if i am leaving power on the table with all those spagetti bends.
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Old Aug 15, 2002 | 11:11 PM
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Default Re: The best flowing "Long Tubes" Facts???

I have now the grots and heard alot of good things about them but was wanting to hear from yall on the opinions....

Anyone else or is it that the external engine section did not get much traffic in here today???????/
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Old Aug 15, 2002 | 11:31 PM
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Default Re: The best flowing "Long Tubes" Facts???

here is a bit of info comparing some
by JMX.
http://www.ls1info.com/article.php?sid=189
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Old Aug 16, 2002 | 03:40 AM
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Default Re: The best flowing "Long Tubes" Facts???

TTS
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Old Aug 16, 2002 | 08:14 AM
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Default Re: The best flowing "Long Tubes" Facts???

Hey I am about to get some FLP's here in a couple of weeks and I'm going to try to post some befor and after exhaust sound waves for everyone to hear. Nothing has been done inside the engine so it is all stock besides my borla cat-back and well you can see below. I can't wait to get them I want raw sounding exhaust,I want to make every one turn and look <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> even more then they do now with just my borla. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
I will post it soon.
Warren
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Old Aug 16, 2002 | 09:53 AM
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Default Re: The best flowing "Long Tubes" Facts???

From what I have seen, the most powerful cars around are using grots. Two cars in Waco are running 120+ mph with BOLTONS, two LS1s with stock heads dynoed over 400 rwhp with grots and the list goes on. Who cares about the Y-pipe quality when you can fab an X-pipe setup? They are almost impossible to get a hold of however.
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Old Aug 16, 2002 | 02:14 PM
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Default Re: The best flowing "Long Tubes" Facts???

I'm putting on some Grotts on Mon. WOOOOHOOOO!!!

I can't wait!
Nick
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Old Aug 16, 2002 | 03:13 PM
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Default Re: The best flowing "Long Tubes" Facts???

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by INSSANE:
<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.
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Old Aug 16, 2002 | 03:47 PM
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Default Re: The best flowing "Long Tubes" Facts???

QTP is one of our sponsors that sells them....
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Old Aug 16, 2002 | 04:41 PM
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Default Re: The best flowing "Long Tubes" Facts???

I see its a header "Grotyohann" GROTT

Thanks <img border="0" alt="[Banging Head]" title="" src="graemlins/gr_banghead.gif" />
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Old Aug 16, 2002 | 07:26 PM
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Default Re: The best flowing "Long Tubes" Facts???

the fastest F-Bods I've seen use Dynatech headers. These are essentially the undressed, strickly track version of the FLPs. look at them side by side, they look identical. I'd say FLPs are the way to go. Most long tubes will net you good horsepower. I have yet to date seen a side by side comparision. Honestly you'd have to have a ton of disposable income to put something like that together. I think the FLP has by far the best package deal, but most choke over the price. If you can muster the coin, you get everything you need in one deal.

JMHO,
Mike
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Old Aug 16, 2002 | 08:02 PM
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Default Re: The best flowing "Long Tubes" Facts???

I believe what this link says as I have heard the same this as to what this link says!!!!

CHECK THIS OUT!!!!!

http://www.ls1info.com/article.php?sid=189
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Old Aug 16, 2002 | 10:18 PM
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Default Re: The best flowing "Long Tubes" Facts???

BADZ,
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.
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Old Aug 17, 2002 | 07:28 AM
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Default Re: The best flowing "Long Tubes" Facts???

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
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Old Aug 17, 2002 | 09:28 AM
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Default Re: The best flowing "Long Tubes" Facts???

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 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.
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Old Aug 17, 2002 | 11:32 AM
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Default Re: The best flowing "Long Tubes" Facts???

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Dyno test were done to confirm this theory. I lost 12RWHP going to STEPPED Dynas from the little old MACS..... </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">JS, let's not mislead people with statements like this that can be mis-interpreted! You lost power below ~4600RPM....When you are shifting a car (especially an M6) at 6500RPM the tach will never drop below 4600RPM and in fact gain power on the top end! This is well worth the trade.
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Old Aug 17, 2002 | 02:03 PM
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Default Re: The best flowing "Long Tubes" Facts???

I was talking about the bigger STEPPED Dynas...
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
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