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Dual outlet 40 questions

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Old Dec 12, 2004 | 12:05 PM
  #1  
zNucleaRz's Avatar
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From: Newport News, Va
Car: 84 Z28
Engine: GMPP 350 HO
Transmission: 700R4 + Shift Kit
Axle/Gears: Auburn Posi; Richmond 3:73 Gears
Dual outlet 40 questions

I was wondering I kind of missing have dual tips out the back one on the left other on the right. I don’t particularly like the 80's sound, little to raspy for me but that maybe due to me having a 305. But I was thinking using the Flowmaster 40 truck muffler the 3" inlet dual 2 1/2 out same side and running it like the magnaflow system. Has anyone tryed this if so have any pictures and how does it sound?

This muffler part #430402


Ran like this
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Old Dec 12, 2004 | 01:32 PM
  #2  
iceman02's Avatar
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From: waco, tx
Car: 91Z28 L98
Engine: HSR 350
Transmission: Goebel 700R4
Maybe try the 40 series delta flow muffler. That might quiet things down a bit. I don't have one, so I can't say for sure, but that might help.
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Old Dec 13, 2004 | 12:24 AM
  #3  
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From: cali
Car: 84z, 65 elcamino
Engine: l69 and a hyped up sbc in the camino
Transmission: t5 m21
Axle/Gears: 373s 411s
i have delta ss on my elco and its loud i dont think it is but everybody else does.
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Old Dec 13, 2004 | 07:59 PM
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the 40 is louder than the 80, and sounds about 90 times better....i think i'm going with that same muffler, and routing it the same way as your have pictured...i love the sound of that american muscle that flowmaster 40 series has...
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Old Dec 13, 2004 | 11:06 PM
  #5  
zNucleaRz's Avatar
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From: Newport News, Va
Car: 84 Z28
Engine: GMPP 350 HO
Transmission: 700R4 + Shift Kit
Axle/Gears: Auburn Posi; Richmond 3:73 Gears
Yea i love the sound of my 40 i have now. But i missed having dual tips so i gonna try it when i get the funds.
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Old Dec 24, 2004 | 11:34 PM
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stage20's Avatar
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From: p'cola FL
Car: 88 iroc-z/28
Engine: 408 lsx
Transmission: 5800 stall
Axle/Gears: 4.71
put some bullet mufflers inline, that will tone down the noise a lot of that flowmaster. you wont lose any power either. sounds much more crisp, less rasp and tone down all the interior rachet that muffler creates.
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Old Dec 27, 2004 | 12:17 AM
  #7  
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Car: Red 87 IROC-Z28 T-Top
Engine: 5.7 Tuned Port Injection
Transmission: 700R4 Auto
Axle/Gears: BW 9-Bolt 3.27
I'd go with the 3" inlet 2 1/2" dual outlet 80 Series. Sounds way better than the overdone and bigger all 3" 80 Series.
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Old Dec 27, 2004 | 06:45 AM
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From: The "D"
Car: A Portly 85 Z28
Engine: 4.530 X 4.250 BBC
Transmission: under rated for this application
Axle/Gears: also under rated
Isn`t the 80 series too big to fit under there?
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Old Dec 27, 2004 | 11:44 AM
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From: Menominee MI
no the 80 series is made for 3rd gens, its a crossflow designed just for our cars...but i happen to like the biger 3" 40 series, the crossflow 80 sounds to hi pitch, and rapsy....
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Old Jan 3, 2005 | 12:24 AM
  #10  
Schizo995's Avatar
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From: Delaware
Car: 1990 Camaro RS
Engine: 90 Caprice 5.7
Transmission: 700R4 Auto
I think the 40s series sounds like crap, its way too quiet for my liking. You all say that the 80's is quieter? What muffler can I go to that will be louder then the 40s sinle inlet dual outlet?
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Old Jan 3, 2005 | 01:31 AM
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From: santa barbara,ca
Car: 1990 iroc z
Engine: LSX 376 F1A
Transmission: 4l60e
Axle/Gears: 12 bolt 3.42
What muffler can I go to that will be louder then the 40s sinle inlet dual outlet?
just make a custom dual outlet from single pipe with no muffler.
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Old Jan 3, 2005 | 03:30 PM
  #12  
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From: Menominee MI
yea i heard the 40 series on a 383 stroker the otherday...not loud enuf for my likings..i think i'm gonna go with straight pipes, or maybe throw in a bullet muffler or soemthing....will the bullet muffler change the sound at all, or will it just muffle it??? i'm debating if i should just leave the bullet muffler off...
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Old Jan 3, 2005 | 08:56 PM
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From: p'cola FL
Car: 88 iroc-z/28
Engine: 408 lsx
Transmission: 5800 stall
Axle/Gears: 4.71
if a 40 series aint loud enough for you, i dont know what is. run the header tubes in the window and drive at 700000000000rpm.

thats about the loudest muffler out there, minus the 1 chamber slowdisaster race muffler.
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Old Jan 3, 2005 | 09:20 PM
  #14  
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From: Menominee MI
theres a thought..not a bad idea...hahaha
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Old Jan 4, 2005 | 12:11 AM
  #15  
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From: Delaware
Car: 1990 Camaro RS
Engine: 90 Caprice 5.7
Transmission: 700R4 Auto
Originally posted by klumb15
yea i heard the 40 series on a 383 stroker the otherday...not loud enuf for my likings..i think i'm gonna go with straight pipes, or maybe throw in a bullet muffler or soemthing....will the bullet muffler change the sound at all, or will it just muffle it??? i'm debating if i should just leave the bullet muffler off...
My muffler isnt loud at all, its just bass. the 3 chambers really deminish the sound
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Old Jan 10, 2005 | 11:25 AM
  #16  
zNucleaRz's Avatar
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From: Newport News, Va
Car: 84 Z28
Engine: GMPP 350 HO
Transmission: 700R4 + Shift Kit
Axle/Gears: Auburn Posi; Richmond 3:73 Gears
I'm ready to start ordering parts this week but I'm not sure what length tips to buy I want them to be long enough that the polished part disappears under the car when looking from the side like Flowmaster American Thunder cat-back. If anyone has this cat-back I would really appreciate a measurement of just the tips.
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Old Jan 10, 2005 | 08:03 PM
  #17  
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From: p'cola FL
Car: 88 iroc-z/28
Engine: 408 lsx
Transmission: 5800 stall
Axle/Gears: 4.71
check with the folks you are buying the tips from. most of the time the long ones (24-28" ???) neck down at a slope to fit 2 1/4 inch stock piping. the muffler man can usually cut them to length, and they can still be welded onto 3" pipe. i dont have any pics, cause this was back in the day before digital cameras.
my whole system is stealth now. no bling.
might get you some ideas turning in your head though.
good luck.
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