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3" or 3˝" borla or magnaflow mufflers blown smallblock
#790737
09/02/10 01:53 PM
09/02/10 01:53 PM
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Joined: Feb 2007
Posts: 2,578
sweden
1Fast340
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what size exhaust would be enough for a twinscrewblown 340 at about 14pounds of boost ? small solidroller 242/248@.050 .570/.576 lift ported edelbrock heads and 1 7/8" primary headers on ethanol 3" or 3˝" borla or magnaflow? i want straight thru but not sure if the packing in the magnaflows will survive the heat for very loong since this thing will be driven to the track and back and to local cruisenights alot looking at either the 18"body magnflows or 16" body borla mufflers i realize this wont be a quiet car by any means but trying to keep it at a level wich is tolerable any sugestions ? also im not made out of money for some odd reason but i dont mind spending the extra money if the quality diferens is there to justify it  thanks
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Re: 3" or 3˝" borla or magnaflow mufflers blown smallblock
[Re: mshred]
#790743
09/02/10 10:53 PM
09/02/10 10:53 PM
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Joined: Jul 2004
Posts: 1,145
Arizona, USA
gsmopar
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super stock
Joined: Jul 2004
Posts: 1,145
Arizona, USA
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Quote:
if you want quiet go with the magnaflows...my 3 inch xr-1's on a mild 340 with an x pipe are anything but quiet
I can't say the magnaflows are quiet. Heck, my 2 chamber flowmasters were about the same.
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Re: 3" or 3˝" borla or magnaflow mufflers blown smallblock
[Re: mshred]
#790744
09/03/10 05:19 PM
09/03/10 05:19 PM
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Joined: Feb 2007
Posts: 2,578
sweden
1Fast340
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Quote:
if you want quiet go with the magnaflows...my 3 inch xr-1's on a mild 340 with an x pipe are anything but quiet
yep but you have the shortest ones from what i remember another 4" of mufflerbody should help some in that department, i have heard your car from youtube and it sound real good
and not that picky on being quiet just want it somewhat tolerable 
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Re: 3" or 3˝" borla or magnaflow mufflers blown smallblock
[Re: MR_P_BODY]
#790745
09/03/10 05:20 PM
09/03/10 05:20 PM
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Joined: Feb 2007
Posts: 2,578
sweden
1Fast340
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Quote:
What size is the collector and how many revs do you turn
Quote:
collectors are 3" but will cut them of and weld on some 3˝" collectors if it would make a diference in power that is noticeable engine is still waiting to be finnished but i think this thing may peak around 7-7500rpms same combo as NA motor realy liked being shifted at alitle over 7000rpms while my thinking is that the blower will shift the powerband even higher since it should take away any limitation the heads are to the rpm.
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Re: 3" or 3˝" borla or magnaflow mufflers blown smallblock
[Re: gsmopar]
#790746
09/03/10 05:23 PM
09/03/10 05:23 PM
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1Fast340
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Quote:
Quote:
if you want quiet go with the magnaflows...my 3 inch xr-1's on a mild 340 with an x pipe are anything but quiet
I can't say the magnaflows are quiet. Heck, my 2 chamber flowmasters were about the same.
thats some nice work what brand is that x-pipe? im not all that in love with the x-pipe sound but power and streetability in the same package is nice
also i will probably have my exhaust go all the way out the back with some turndowns just sticking out under the bumper and from the experience i have with exhaust i have learnt that pipes all the way out behind the car helps alot with soundlevels
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Re: 3" or 3˝" borla or magnaflow mufflers blown smallblock
[Re: 1Fast340]
#790747
09/03/10 07:37 PM
09/03/10 07:37 PM
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Joined: Apr 2009
Posts: 3,415
Toronto
mshred
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Quote:
Quote:
if you want quiet go with the magnaflows...my 3 inch xr-1's on a mild 340 with an x pipe are anything but quiet
yep but you have the shortest ones from what i remember another 4" of mufflerbody should help some in that department, i have heard your car from youtube and it sound real good
and not that picky on being quiet just want it somewhat tolerable
true, i do have the smallest one because i wanted the loudest sound lol...the clips i have on youtube are actually very quiet compared to it in person...they are loud! all i know is that gauging from what i have heard many say, the magnaflows will be the quieter of the two in general, while still sounding good and delivering awesome power...but man, i love how my borla's sound, i can just imagine them on your setup
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Re: 3" or 3˝" borla or magnaflow mufflers blown smallblock
[Re: mshred]
#790748
09/04/10 10:00 AM
09/04/10 10:00 AM
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Joined: Feb 2007
Posts: 2,578
sweden
1Fast340
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Quote:
Quote:
Quote:
if you want quiet go with the magnaflows...my 3 inch xr-1's on a mild 340 with an x pipe are anything but quiet
yep but you have the shortest ones from what i remember another 4" of mufflerbody should help some in that department, i have heard your car from youtube and it sound real good
and not that picky on being quiet just want it somewhat tolerable
true, i do have the smallest one because i wanted the loudest sound lol...the clips i have on youtube are actually very quiet compared to it in person...they are loud! all i know is that gauging from what i have heard many say, the magnaflows will be the quieter of the two in general, while still sounding good and delivering awesome power...but man, i love how my borla's sound, i can just imagine them on your setup
now you make me feel old i used to realy like loud:p now i prefer it álitle more melow unless it will cost me power 
its a shame it seems like the borla mufflers are so much louder,when i realy like the quality of borla compared to magnaflow,wich isnt realy bad but still diferent levels so to speak..
yeah i think they would sound bada$$ on my build wich i think will be just alitle wilder than yours but not all that much 
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Re: 3" or 3˝" borla or magnaflow mufflers blown smallblock
[Re: 1Fast340]
#790749
09/04/10 12:52 PM
09/04/10 12:52 PM
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Joined: Jul 2004
Posts: 1,145
Arizona, USA
gsmopar
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super stock
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Arizona, USA
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Quote:
thats some nice work what brand is that x-pipe? im not all that in love with the x-pipe sound but power and streetability in the same package is nice
also i will probably have my exhaust go all the way out the back with some turndowns just sticking out under the bumper and from the experience i have with exhaust i have learnt that pipes all the way out behind the car helps alot with soundlevels
Thanks!
Pypes 3.5 in X-pipe kit and Magnaflow race mufflers.
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Re: 3" or 3˝" borla or magnaflow mufflers blown smallblock
[Re: gsmopar]
#790750
10/17/10 01:05 PM
10/17/10 01:05 PM
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Joined: Feb 2007
Posts: 2,578
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1Fast340
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ok i have decided i dont care about if the borla mufflers are louder and i dont care they are more expensive than magnaflows since im putting enough money into this stuff everywhere so a few 100$ more on mufflers are not a big thing even if im not made out of money any advice on whats the diference betwen the XR1 raceline multicore mufflers and the sportsman series? its a pretty good diference in price  looking at the 16" long body mufflers,i think i will use an X-Pipe even if i dont realy like the sound of the X and exhaust will end in front of the wheels or out the back of the car have not decided on that yet
Last edited by 1Fast340; 10/17/10 04:13 PM.
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Re: 3" or 3˝" borla or magnaflow mufflers blown smallblock
[Re: megajoltman]
#790752
10/18/10 12:10 PM
10/18/10 12:10 PM
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Joined: Jan 2003
Posts: 945
La Vernia, Texas
Pat7272
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La Vernia, Texas
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Quote:
Haven't installed mine yet but they were not too loud on my buddy's big block with 3 1/2 full exhaust.
There big mothers though 
Are those the sportsman or multi-core?
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Re: 3" or 3˝" borla or magnaflow mufflers blown smallblock
[Re: Pat7272]
#790753
10/18/10 01:47 PM
10/18/10 01:47 PM
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Joined: Feb 2007
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1Fast340
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Quote:
Quote:
Haven't installed mine yet but they were not too loud on my buddy's big block with 3 1/2 full exhaust.
There big mothers though
Are those the sportsman or multi-core?
3˝" not being loud  they must be good 
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Re: 3" or 3˝" borla or magnaflow mufflers blown smallblock
[Re: 1Fast340]
#790754
10/18/10 04:36 PM
10/18/10 04:36 PM
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Joined: Jul 2003
Posts: 4,085
The Wet Coast, Canada
megajoltman
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Sportsman Case Length (in) 16.000 in. Overall Length (in) 19.000 in. Thickness (in) 4.250 in. Width (in) 7.850 in. My daily driver is a 12V cummins 4x4 so my not too loud might be different then your not too loud
1969 Dart 383/727/D60
CTD Ram 4x4 Mega Cab
Procharged 350Z
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Re: 3" or 3˝" borla or magnaflow mufflers blown smallblock
[Re: megajoltman]
#790755
10/18/10 05:05 PM
10/18/10 05:05 PM
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Joined: Feb 2007
Posts: 2,578
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1Fast340
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Quote:
Sportsman
Case Length (in) 16.000 in.
Overall Length (in) 19.000 in.
Thickness (in) 4.250 in.
Width (in) 7.850 in.
My daily driver is a 12V cummins 4x4 so my not too loud might be different then your not too loud
hey its cheating to use one of those boostproducing mufflers in front of the regular muffler
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