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Greetings and Happy New Year.

I am working on a modified '54 3100 with a Camaro stub and a 350 V8. I have scrapped out the entire exhaust except the headers. I am leaning towards dual Flowmaster 50 series Delta Flow mufflers. No cross pipe. I want a nice resonant rumble , that gurgle-y idle sound , but not excessive noise , rapping when decelerating , and certainly NO trombone. I want folks to hear an unmistakable hot rod sound without being a public nuisance.

I am pretty new to all this. Someone please chime in and tell me if I am barking up the right tree.
The mufflers will have about 4 1/2 ft. of pipe downstream from them , straight out the rear.
I think that the inlet will be 2 1/2" ; will have to double check.
Would it benefit the rumble if I were to expand to 3" aft of the mufflers?

Exhaust input welcomed on a cold winter day ,

Waveski.

After listening to an obnoxious rumble from the exhaust on my Ram 1500 for thousands of miles, I paid a few bucks to get a real muffler installed. Some former owner thought it was cool to make noise. Now I can do things like listen to the radio, or just be more aware of the tinnitus I have to tolerate 24/7. If you feel like you just have to annoy the public at large with your exhaust system, start a savings account to pay for the hearing aids you're going to need pretty soon!
Jerry

Hot Rod Lincoln -

Did you read my post?
Do you know anything about Flowmaster series 50? I believe that the product I referenced IS a real muffler.

" If you feel like you just have to annoy the public at large..."
That is clearly NOT my intention.

Sheesh.

Flowmaster has built a well-deserved reputation of walking the razor's edge of illegal, where exhaust noise is concerned. Not everyone agrees that everybody for a block or so in all directions wants to hear "an unmistakable hot rod sound" (your words, not mine). Some of us just think that's being rude.
Jerry

This is the HiPo Forum. Modifications are welcomed here. Those who do not agree with modifications consider our other forums. Anyone doing modifications to their truck should feel welcome here and not have to endure lectures on why their projects are not proper. Of course if the proposed modifications are unsafe or illegal by all means jump in and let us know otherwise keep your opinions to yourselves. Hotrods are cool, period.

Thank you.

I believe that the criteria I outlined in my o.p. were within the bounds of reasonable.

I appreciate your asserting yourself as moderator in this thread - which ,btw, references the Flowmaster 50 Delta Flow which is advertised as having a “moderate “ sound.

(I’ve always felt that a good pun lightens up a situation...)

Addendum:
It is possible that Mr. Lincoln is not entirely familiar with the Flowmaster line of mufflers. They range from completely stock to race track , with a wide range in between. The selection I am considering is in the middle of that range , actually on the quieter side of mid-range.

Flowmaster has an excellent website with sound test videos.

Flowmaster is known for a quality product. It is going to cost you some $ to get the answers to your questions. Put them on with clamps first. You can experiment with different lengths of pipe and using adapters can determine if you want bigger pipes. Your project sounds like it will be a blast to drive. HRL is very familiar with performance builds but he does have a propensity to get under your skin. He really is a good guy at heart but you have to gnaw your way through a lot of gristle to get to it. Good luck.

It's your project, but my 2¢:
Every Flowmaster street car I've heard is louder than I like inside the car cruising, and louder than the owner thought it would be when he ordered them.
As was said, clamp them on and try out different lengths, and different points of hanger isolation before welding.
Have fun!

I once saw a bumper sticker on a hot rod that read, "IT'S NOT TOO LOUD - YOU'RE TOO OLD." Read these replies keeping in mind that the average demographic of this forum is probably about the same age as the trucks themselves (hey, that includes me too!).

The Flowmaster sound is unique and distinctive, and makes a truck more fun to drive. Dudes, if you want quiet, buy a Cadillac.