Reply to "3785 Gets a 400 swap, fabbed 180's and fabbed mufflers"

pittcrewOwner etc. of 3785

Denis,
thanks for the question, I will try to answer the best I can.

The idea behind the V shaped perf tube is simplicity.
The exhaust has a free flowing route to exit at the tips. The holes are for sound baffling only and not to flow gas. The perf tube will be wrapped tightly in fiberglass packing and it will act like a conventional glass pack muffler.

With a 1 in sound box 2 out design their really isn't any thing to direct exhaust to the exits unless some internal flow directors are installed.

With a large perf pipe in and two perf pipe out system, if its like the factory ANSA system the gas has to flow through the small perf holes to go from one side to the other and it is not as free flowing.
I think that configuration can be made to work with some modification if the holes were larger and less restrictive.

I am not an engineer so I cant give you the math on all of it but I hope that answers your question.

4/18/099:05 PM

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