Length does matter. 20” or 40” mufflers?

[Tim]

Length does matter. 20” or 40” mufflers?

For the Gen 1Vipers there doesn’t seem to be an after market muffler that flows more air with less restriction, and not be too much louder than stock with minimal drone and still sound half decent.

Does anyone know how the sound will change when going to a longer muffler with no other changes in the exhaust except having already dropped the Cats. I realize that it will be quieter but will there be less of a drone, will the pitch be slightly deeper, etc.

There is a company in town that will manufacture mufflers close to my specs. I have already dropped the Cats on my 94RT10 and I’m happy with the changes so far.

They will make the muffler 5” or 6” od, 2 ½” or 3” in and 3” out. Length can be up to 40” +- to run the full length of the sills if I wish.

These mufflers are similar in construction to the Flo Pro Baffle Pack

Does anyone have any theories or experiences?

TK

 

[FE 065]

I've used 6"+ OD Ultra Flows under my '94 Viper sills years ago w/o cats putting my turnout/tip right into the end of the muffler (giving you an idea how far back I mounted the mufflers) I don't recall the length. I think the big diameter is more important than then length. 40" of loud is still LOUD, if you use a smaller OD. The UltraFlows weren't very loud overall.

I'm doubting a 6" muffler 40" long will fit under the sills towards the front of the car.

 

[99 R/T 10]

If you can get them to make a 5" round muffler, you will have an easier time fitting it under the side sill.

 

[Tim]

How about 5” muffler that is 40” long? How will that sound and will it work?

Tim

 

[Roadkill]

Sounds like a lot of money you are going to be spending for items that are already out on the market. I just went to a magnaflow exhaust: 6" round with a 3" internal diameter straight-through. There isn't any drone and they cost me about $75 each or so.