Another True Dual Question.. 2 1/2 or 3 inch?
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Joined: Nov 2001
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From: Valrico, Florida
Another True Dual Question.. 2 1/2 or 3 inch? I was wondering what power diff between the two would be.. Any advantages..? I have Mac's with a 3 inch flange. I need to lose some weight and I am considering going to the true duals..
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Re: Another True Dual Question.. 2 1/2 or 3 inch? with higher reving setups, like yours, mine and most bigger cam guys, bigger is better with respect to this if you have a good x pipe (just a dr gas is right). bullets are LOUD, just a bit more toned than straight pipe but it will be pick you up in hp and tq. if you want a little more quiet go with the ($$$) borla X mufflers. they look real similar to bullets, but are bigger and more quiet. PSJ has them. i believe there is no difference in power.
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Joined: Nov 2001
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From: Valrico, Florida
Re: Another True Dual Question.. 2 1/2 or 3 inch? I have to look into this then. Quiet sounds good.. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> Thanks guys..
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Re: Another True Dual Question.. 2 1/2 or 3 inch? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by VINCE:
<strong>I have to look into this then. Quiet sounds good.. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> Thanks guys..</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">3" equals quieter and deeper, but less ground clearance.
<strong>I have to look into this then. Quiet sounds good.. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> Thanks guys..</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">3" equals quieter and deeper, but less ground clearance.
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Re: Another True Dual Question.. 2 1/2 or 3 inch? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by VINCE:
<strong>The bigger the pipe the better the top end? Will I lose midrange?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">JSears gained in the low and midrange and was even with his Y setup up top[.
<strong>The bigger the pipe the better the top end? Will I lose midrange?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">JSears gained in the low and midrange and was even with his Y setup up top[.
Re: Another True Dual Question.. 2 1/2 or 3 inch? I'm going with 3" Hooker LT colectors (thats how they come) to an 2.5 x-pipe because I want ground clearance.
Also...2.5 is PLEANTY for just about any small block....3" duel is for BIG CID engines......
<small>[ November 10, 2002, 02:16 PM: Message edited by: 2001CamaroGuy ]</small>
Also...2.5 is PLEANTY for just about any small block....3" duel is for BIG CID engines......
<small>[ November 10, 2002, 02:16 PM: Message edited by: 2001CamaroGuy ]</small>
Re: Another True Dual Question.. 2 1/2 or 3 inch? You'll want to go with 3" since you have heads/cam. Magnaflows would be a good choice. They are a straight threw design and are much quieter than bullet mufflers. I have bullets and my buddy has the magnaflows, both sound great.
Good Luck!
Mike
Good Luck!
Mike
Re: Another True Dual Question.. 2 1/2 or 3 inch? Vince, I'm going with SLP longtubes into a 3" X-pipe (courtesy of Mr. Justin Sutton) into dual dumps w/ Dynomax bullets. I had a single dump setup before w/ a Y and just one bullet, and it was pretty loud. But awesome. So I would have to comply that if quiet is what you're looking for, you might want to forego the bullets. As far as 2.5"/3"...who knows? I've heard all different kinds of things. So, I figured, just in the instance that you do lose HP down low with a 3", setup, just add more gear to the car so you don't stay in those low-mid RPM's anyway! <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> Of course, that's me and my backwards way of thinking. For you, though, having heads/cam, every part of me wants to say that 2.5" exhaust would be a restriction, even with true dual. But, I'm by no means an expert. Good luck with everything!
Re: Another True Dual Question.. 2 1/2 or 3 inch? On a bolt-on car 2.5" is fine. That's what I'm running, but as soon as I change cams, I'm going 3".
Bullets can be loud on cammed cars, but for stock internal cars, they're very docile(until you're WOT) with 2.5" or 3". The problem with the Magnaflows 'bullet' type mufflers is the size. They're fine for 2.5"(4" diameter), but for 3", they're 6" diameter which would be a challenge to fit under our cars... The Magnapacks would sound really good on a 2.5" system though - IMO <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
There's a few sound clips of various dual systems with different cams on our site under 'Performance' and 'F-body' - check True Duals.
www.laneswheels.com
<small>[ November 11, 2002, 10:07 AM: Message edited by: Lane ]</small>
Bullets can be loud on cammed cars, but for stock internal cars, they're very docile(until you're WOT) with 2.5" or 3". The problem with the Magnaflows 'bullet' type mufflers is the size. They're fine for 2.5"(4" diameter), but for 3", they're 6" diameter which would be a challenge to fit under our cars... The Magnapacks would sound really good on a 2.5" system though - IMO <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
There's a few sound clips of various dual systems with different cams on our site under 'Performance' and 'F-body' - check True Duals.
www.laneswheels.com
<small>[ November 11, 2002, 10:07 AM: Message edited by: Lane ]</small>
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Re: Another True Dual Question.. 2 1/2 or 3 inch? You guys just need to look at the overall surface area of the pipe the exhaust has to go through. When measured you'll see that the 2.5" is basically the same surface area as the single 3". You need at least 3" true duals to make it worth your while. I dunno if you guys keep up much with NMCA or NSCA racing but Straightline mufflers are the highest flowing, yet quietest muffs for racing. For you weight consicous guys they even have a flyweight series that only weight like 3 #'s a piece. They have a pricetag to go along with them though but you may wanna check them out.
Re: Another True Dual Question.. 2 1/2 or 3 inch? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> Also...2.5 is PLEANTY for just about any small block....3" duel is for BIG CID engines......
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">This is not a true statement! 2.5" may be fine for a stock small block but not a heads and cam motor.
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">This is not a true statement! 2.5" may be fine for a stock small block but not a heads and cam motor.