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3.5 inch exhaust

AlleyCat

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#1
Who is running this in their high power builds? What is the part number to order? I have long tube American racing 2 inch headers.
 

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#2
Not sure what you’re looking for. ARH has a 2x3.5 header. I have those. The X-pipe on that is 3.5 but the mufflers step down to 3.0. I had to build a custom muffler setup to keep the 3.5 all the way back.
 
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AlleyCat

AlleyCat

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Ahhh. Ok. I probably have the arh 2 by 3 inch. So unless the header was changed I will be with the 3 inch pipe.
 

Marc W

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#4
Ahhh. Ok. I probably have the arh 2 by 3 inch. So unless the header was changed I will be with the 3 inch pipe.
Yes. They just came out with the 3.5” collector in the last year. I purchased the headers and 3.5 X-pipe and not the 3.0” mufflers that come in the complete system. Then I custom fit the 3.5” straight thru Flowmaster Race mufflers. Alex at BBP said that my motor would benefit from the bigger system. B31C17E0-5DDC-498E-8B40-61AD067541A9.jpeg
 

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#5
Alex at BBP said that my motor would benefit from the bigger system.
Key point. You are in the minority of people who might need (not want) a 3.5" exhaust system.
 

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#6
Key point. You are in the minority of people who might need (not want) a 3.5" exhaust system.
I agree. That is probably why the ARH 3.5” system reduces to 3” when it gets back to the mufflers. Either that or they’re too cheap to make 3.5” mufflers. 😂 While I’m the one making decisions on what to go with on my build, much of that is based on asking questions of the right people and going with the answers. When the man building my engine (Alex Jones at BBP) says that in my case the bigger exhaust will work.... I take that advice. A too big exhaust on a motor that doesn’t need it will be counterproductive. My advice to anybody making decisions on what to go with concerning mods is to ask a source like BBP that has experience to know what actually works in harmony with what you’ve got and where you’re going to go.
 

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I agree. That is probably why the ARH 3.5” system reduces to 3” when it gets back to the mufflers. Either that or they’re too cheap to make 3.5” mufflers. 😂 While I’m the one making decisions on what to go with on my build, much of that is based on asking questions of the right people and going with the answers. When the man building my engine (Alex Jones at BBP) says that in my case the bigger exhaust will work.... I take that advice. A too big exhaust on a motor that doesn’t need it will be counterproductive. My advice to anybody making decisions on what to go with concerning mods is to ask a source like BBP that has experience to know what actually works in harmony with what you’ve got and where you’re going to go.
Necking down pipes is just fine as the exhaust gases cool significantly as they move downstream and less volume is required (and more velocity) as they cool.

If anyone doubts this go for a drive and then grab your exhaust tip, then go grab just behind your cat, and then go to the hospital.
 

Best Vapor

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#8
Electric cutouts as close to the header as possible and doesn't matter what size the exhaust is
 

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#9
I have the ARH 3.5” race exhaust.

 

WhipCat

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WhipCat

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#11
Sounds nice also

 

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Looks fantastic
 

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#13
Necking down pipes is just fine as the exhaust gases cool significantly as they move downstream and less volume is required (and more velocity) as they cool.

If anyone doubts this go for a drive and then grab your exhaust tip, then go grab just behind your cat, and then go to the hospital.
I'll wait for your Youtube video demonstration. :)

OP and Marc - have a sound clip of your set up?
 

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#14
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Marc W

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#15
Wow. That was a barrage of info. I just took some pics of mine yesterday. ARH 2x3.5 with 3.5 Flowmaster Race muffs 5CEB5794-97EF-4D7A-A3CF-11F284B9E877.jpeg 04E7CB3E-A5E1-4293-845C-80D652235424.jpeg 06932C46-91E3-4631-90C9-59DF52953BA0.jpeg
 

Linda's Hell Cat

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#16
@Marc W
Well exhaust is not my Forte yet!
So I put everything In at once and hopefully will a answer the main questions.

Linda :)
 

Marc W

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#17
@Marc W
Well exhaust is not my Forte yet!
So I put everything In at once and hopefully will a answer the main questions.

Linda :)
That’s great! I was just surprised that somebody took the time and effort to do that. 🤗. A lot of good info for shoppers there.
 

Linda's Hell Cat

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#18

My Charger Hellcat Stock to Track edition!
When I can I drive my Granson to school.
In the morning I remote start my HC and Brandin covers his ears them Boom and Brandon goes off to school with a huge grin on his face.......me too!

Linda :)
 

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