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2 1/2" or 3" exhaust for SB stroker - SUCCESS!!!!!!!! #450474
08/26/09 10:04 AM 08/26/09 10:04 AM
Joined: Mar 2003
Posts: 15,493
the boonies
aarcuda Offline OP
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the boonies
My 416 needs an exhaust. right now, the ported TA heads dump into the hooker super comp 1 3/4" headers and then into some cheapie cherry bombs under the car.

i had previously bought some dynamax TA/AAR style muffleres that have 2 1/2" inlets and was planning to buy the Weldtech 2 1/2' TA/AAR exhaust tips.

that would have meant using a collector reducer that brings it down to 2 1/2" inch and running int the 2 1/2" mufflers and out the 2 1/2" pipes. I couldnt find 3" TA/AAR style mufflers before

But now I see Weldtech sells 3" TA/AAR style mufflers and 3" TA/AAR style tips.

Would I see a difference in the 3" vs the 2 1/2" setup?
Re: 2 1/2" or 3" exhaust for SB stroker [Re: aarcuda] #450475
08/26/09 10:18 AM 08/26/09 10:18 AM
Joined: Oct 2003
Posts: 11,689
W. Kentucky
justinp61 Offline
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W. Kentucky
I had 2 1/2" with Flowmaster 40s on my Dart that turned down at the rear axle. They were .2 slower in the 1/8 mile on the 340, 1 5/8-1 7/8 TTIs. The new 408 has 1 7/8" Headmans with 3 1/2" collectors, I built 3" with Pypes mufflers that turn down at the rear axle. It hasn't been run with the exaust on yet to see how it does.
Re: 2 1/2" or 3" exhaust for SB stroker [Re: aarcuda] #450476
08/26/09 10:28 AM 08/26/09 10:28 AM
Joined: Jul 2008
Posts: 611
Boise
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Moparteacher Offline
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Boise
Personally I would run the 3".
Re: 2 1/2" or 3" exhaust for SB stroker [Re: Moparteacher] #450477
08/26/09 10:38 AM 08/26/09 10:38 AM
Joined: Jan 2003
Posts: 13,417
Marion, South Carolina [><]
an8sec70cuda Offline
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Quote:

Personally I would run the 3".


CHIP

CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Re: 2 1/2" or 3" exhaust for SB stroker [Re: an8sec70cuda] #450478
08/26/09 10:42 AM 08/26/09 10:42 AM
Joined: Mar 2003
Posts: 15,493
the boonies
aarcuda Offline OP
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Quote:

Quote:

Personally I would run the 3".


CHIP



okay then, after further 'researching' on the weldtech site, they have a whole 3" stainless exhaust from headers to mufflers with an x pipe. thats everything i wanted in an exhaust.

any ideas about the flow on their mufflers? I'd imagine they would be fine but i just have to ask.

anyone know if they deliver to shows like the Monster? (they arent answering their phone right now)
Re: 2 1/2" or 3" exhaust for SB stroker [Re: aarcuda] #450479
08/26/09 11:15 AM 08/26/09 11:15 AM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
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Quote:

Quote:

Quote:

Personally I would run the 3".


CHIP



okay then, after further 'researching' on the weldtech site, they have a whole 3" stainless exhaust from headers to mufflers with an x pipe. thats everything i wanted in an exhaust.

any ideas about the flow on their mufflers? I'd imagine they would be fine but i just have to ask.

anyone know if they deliver to shows like the Monster? (they arent answering their phone right now)



To be honest your 1 5/8 headers are a hold up but
you could use a 3" till you get to the tailpipes
then you could drop to the 2 1/2" ... the gasses
at the tailpipe have cooled and dont require the
big tubes vs up closer to the engine
Re: 2 1/2" or 3" exhaust for SB stroker [Re: MR_P_BODY] #450480
08/26/09 12:13 PM 08/26/09 12:13 PM
Joined: Mar 2003
Posts: 15,493
the boonies
aarcuda Offline OP
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i have the 1 3/4" hooker super comps. not the 1 5/8"

these were the biggest ones I could find that would work with my power steering and such
Re: 2 1/2" or 3" exhaust for SB stroker [Re: aarcuda] #450481
08/26/09 12:22 PM 08/26/09 12:22 PM
Joined: Jan 2003
Posts: 5,898
Florida
Locomotion Offline
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Florida
I have TTI 1 5/8"-1 3/4" step header, 3" X-pipe and exhaust ending with 3" Dynomax Ultra Flo mufflers at the rear end housing on my race car. It ran at least a few hundredths faster than open headers after some carb re-tuning.

Mine is "only" a 360. So I figure 3" system will perform better than 2.5" on a stroker.
Re: 2 1/2" or 3" exhaust for SB stroker [Re: aarcuda] #450482
08/26/09 12:24 PM 08/26/09 12:24 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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Quote:

i have the 1 3/4" hooker super comps. not the 1 5/8"

these were the biggest ones I could find that would work with my power steering and such



Sorry.... I seen that.... still holds true on the
tailpipe thing
Re: 2 1/2" or 3" exhaust for SB stroker [Re: MR_P_BODY] #450483
08/26/09 02:47 PM 08/26/09 02:47 PM

A
Anonymous
Unregistered
Anonymous
Unregistered
A







To be honest your 1 5/8 headers are a hold up but
you could use a 3" till you get to the tailpipes
then you could drop to the 2 1/2" ... the gasses
at the tailpipe have cooled and dont require the
big tubes vs up closer to the engine




Best advice i've seen on here

Re: 2 1/2" or 3" exhaust for SB stroker. BURN! #450484
08/27/09 03:40 PM 08/27/09 03:40 PM
Joined: Mar 2003
Posts: 15,493
the boonies
aarcuda Offline OP
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the boonies
looks like I'm a day late. i finally got in touch with Weldtech and they said they do not have anymore 3" dies for bending the pipes. and they dont make the 3" in/out TA mufflers any more and they dont know anyone who does.

so even though Im ready to buy a 3" x pipe system, I can't.

How bad will the 2 1/2' system be?

Or is there another source?
Re: 2 1/2" or 3" exhaust for SB stroker. BURN! [Re: aarcuda] #450485
08/28/09 12:30 PM 08/28/09 12:30 PM
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick Offline
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patrick  Offline
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Grand Haven, MI
street or pure race?

street you won't know the difference.

race, it might cost you a couple tenths.

1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
Re: 2 1/2" or 3" exhaust for SB stroker. BURN! [Re: aarcuda] #450486
08/28/09 12:42 PM 08/28/09 12:42 PM
Joined: Aug 2003
Posts: 43,364
Bend,OR USA
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Quote:

looks like I'm a day late. i finally got in touch with Weldtech and they said they do not have anymore 3" dies for bending the pipes. and they dont make the 3" in/out TA mufflers any more and they dont know anyone who does.

so even though Im ready to buy a 3" x pipe system, I can't.

How bad will the 2 1/2' system be?


I have tested a 2.5 system on my old 440 powered Dart, it was 2.5 inch out of the headers into 2.5 Turbo muffs and then 2.5 pipes to the front of the rear wheel wells. The car ran 12:20s at 109. MPH cork up, it ran 11:30 at 117. MPH uncorked My new car runs almost the same in the 1/8 mile, 6:98 at 100.3 MPH uncorked versus 7:01 at 99.8 MPH corked up, with the three inch system from the headers to the Magnaflow 3x14 mounted behind the rear end at the rear bumper I would put a three inch system on everything now based on those results. The Magnaflows and the Ultraflows seem to be real good at noise management and still not restrict power

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: 2 1/2" or 3" exhaust for SB stroker. BURN! [Re: Cab_Burge] #450487
08/28/09 01:02 PM 08/28/09 01:02 PM
Joined: Mar 2003
Posts: 15,493
the boonies
aarcuda Offline OP
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this is a street car that sees a lot of track time.

I think i am going to try the 3" Pypes system from the headers down to the Dynamax AAR/TA style mufflers which have 2 1/2" inlets and outlets. Then i'll use Weldtechs 2 1/2" TA/AAR exhaust tips

I wish i could go 3' all the way but I cant find a muffler that has 3" inlets and outlets on the same size like the TA/AAR muffler.
Re: 2 1/2" or 3" exhaust for SB stroker. BURN! [Re: aarcuda] #450488
08/28/09 02:10 PM 08/28/09 02:10 PM
Joined: Mar 2003
Posts: 15,493
the boonies
aarcuda Offline OP
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well well well. After doing some more research, i came upon the flowmaster site and found they sell a muffler with a 3" in and two 2.5" outs with one of the outs being on the same side of the in. I called them to see if i could get away with just cutting the outlet on the back side and welding it up and pretty much making it an AAR style mufler with the inlet and outlet on both sides.

They said i should call their special projects team and they could make me what i need (albeit not as cheap as I could get from summit.

So now i have a choice of either a 4' tall or 5" tall AAR style muffler with a 3" inlet and a 2.5" outlet (which will match the 2.5" AAR style exhaust tip.

i think I have it!

Re: 2 1/2" or 3" exhaust for SB stroker. BURN! [Re: aarcuda] #450489
08/28/09 02:11 PM 08/28/09 02:11 PM
Joined: Feb 2007
Posts: 2,578
sweden
1
1Fast340 Offline
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Quote:


I wish i could go 3' all the way but I cant find a muffler that has 3" inlets and outlets on the same size like the TA/AAR muffler.



im not sure this can be done on a mopar of any kind but i have one option left for you but it depends on how wide the muffler pockets under the car is and how wide the muffler is, you can use a muffler with a offset inlet and center outlet and then use a 180degree bend behind it with a thight radius like a 4"radius to bend around the case and go forward again slightly tilted down and then use something like a 135 degree bend back again out in front of the wheels while it also goes around the front legs of the frames.
i have done this on a mustang but it was only a 2½" system.. it did look good but was a very thight fit and requiers custom everything
Re: 2 1/2" or 3" exhaust for SB stroker. BURN! [Re: 1Fast340] #450490
08/28/09 02:25 PM 08/28/09 02:25 PM
Joined: Aug 2006
Posts: 2,141
junction city oregon
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viperblue72 Offline
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I had 2 1/2" In and out on my flowmasters. The muffler shop just cut the in/out back to where they would be 3". I don't think it was a big deal whatsoever. And fwiw I had a street strip 408 stroker with tti's and 3" dual ex. On the chassis dyno I only gained 3hp by removing the exhaust. Not really worth it in my book.
Re: 2 1/2" or 3" exhaust for SB stroker. BURN! [Re: viperblue72] #450491
08/28/09 03:04 PM 08/28/09 03:04 PM
Joined: Aug 2009
Posts: 2
Gold Coast, QLD, Australia
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OzMopar Offline
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Spintech do what your after with the sportsmans split case mufflers.

Check it out -

http://spintechmufflers.com/spintech/spintechindex.asp
Re: 2 1/2" or 3" exhaust for SB stroker. BURN! [Re: OzMopar] #450492
08/28/09 04:05 PM 08/28/09 04:05 PM
Joined: Mar 2003
Posts: 15,493
the boonies
aarcuda Offline OP
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the boonies
Quote:

Spintech do what your after with the sportsmans split case mufflers.

Check it out -

http://spintechmufflers.com/spintech/spintechindex.asp



just when I settle in to a decision, I get another choice. well better late than never.

i just checked these guys website and they sound interesting.

are they as good as they say they are? Any comparisons? have you tried them? any negatives?
Re: 2 1/2" or 3" exhaust for SB stroker. BURN! [Re: aarcuda] #450493
08/28/09 07:34 PM 08/28/09 07:34 PM
Joined: Jul 2003
Posts: 4,086
The Wet Coast, Canada
megajoltman Offline
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I'm not sure if these are what your looking for there only 2 1/2 though

MagnaFlow= Material: 100% Stainless Steel - Mirror Finish
Body Shape: 5in.x8in. Oval
Inlet/Outlet Size: 2.5in./2.5in.
Body Length: 14in.
Overall Length: 17in.
Core Size: 2.5in.
Position: Offset/Offset Same End

http://www.magnaflow.com/02product/shopexd.asp?zone=main&id=8065

Dynomax Turbo
Part Number= 17676
Shell Diameter= 4 1/4 x 9 3/4(in.)
Overall Length= 15 1(in.)
Shell Length= 14(in.)
Inlet Diameter= 2 1/2(in.)
Oulet Diameter= 2 1/2(in.)

PIC http://www.amazon.com/Dynomax-17676-Spr-Trbo-Muff/dp/B000CIT2UO

As for spintech heard they sound and flow like crap and then others say there awesome...

1969 Dart 383/727/D60

CTD Ram 4x4 Mega Cab

Procharged 350Z
Re: 2 1/2" or 3" exhaust for SB stroker. BURN! [Re: aarcuda] #450494
08/29/09 12:53 AM 08/29/09 12:53 AM
Joined: Aug 2009
Posts: 2
Gold Coast, QLD, Australia
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OzMopar Offline
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Gold Coast, QLD, Australia
Quote:

Quote:

Spintech do what your after with the sportsmans split case mufflers.

Check it out -

http://spintechmufflers.com/spintech/spintechindex.asp



just when I settle in to a decision, I get another choice. well better late than never.

i just checked these guys website and they sound interesting.

are they as good as they say they are? Any comparisons? have you tried them? any negatives?



I have not tried them yet but looking to put some on my car soon.

I have heard mixed reactions to them as well regarding flow/sound etc but they have a greater range than other brands and if you pick the right muffler for your application you should be right.

A lot of World of Outlaw sprintcars use them, here any way and those things make plenty of power.
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