I have a 47 Ford Coupe with a hot Flathead. It is a 286 cubic inch stroker with an Isky Max1 cam and three Stromberg 97's. It sounds great with open headers but I cant drive it very long. I was going to run straight pipes out the back but I am afraid it will be too obnoxious on a long trip. I searched for mufflers and the choices are overwhelming. I want stainless but does anyone have suggestion. I want the sound to turn heads but I don't want that drone in the interior. Thanks in advance for the responses.
subject covered a lot - maybe not foe your specific motor - search here & you tube for running motor sounds
I have long glass packs w/ no tailpipes, just turnouts on my F-1 pickup. Love the sound, not to loud for me. Warmed over 8ba w/mild cam...
Brockman Mellowtone mufflers. The only ones I run on my Kustoms. Available with glass, steel or no packing! Different lengths, too!
I don't want to turn heads especially the men in blue. When I was a teenager it did not take me long to figure out quiet exaust meant less tickets and I don't mean just loud muffler tickets. On my Sunbeam I used cut outs when I wanted to hear it.
Run the pipes out the back and you won't get the drone in the cab. Any muffler is going to drone some when you're running in resonance that is a specific RPM range that all vehicles have and the type of muffler don't make any difference. If you want it to sound like an old hot rod or custom then glass packs or steel packs are what you want. My Ol' Man preferred steel packs but I am from the next generation and I prefer glass packs. That is the easiest way to lay it out from where I sit.
Mark, I’m kind of worried,,,,that was a lot of smoke when you revved the engine. Out of both banks even ! Lol,,,you know I’m kidding. Early cool morning steam,,,that Cadillac engine is really nice . You lucky dog ! Tommy
haha, yeah new mufflers are coated in oil to keep them from rusting until they are sold.... cleared right up in a few minutes
I too run Porter steel pacs As you know they use stretched & tack welded garage door springs for the cores. I .D. of the cores is only about 1 1/2". This could result in considerable flow restriction. I have heard later ones have a larger I.D. Greg
i used a pair of Porters, (I forget the length) on my last project, (off topic truck), and plan on using 1 for the current Buick straight 8 project. Really nice quality and a great sound without being too much, though the off topic truck they are on is on the louder side as the exhaust dumps under the truck bed. The buick will get complete exhaust to the bumper.
I'll be running Porters behind the flatty in my coupe. I have them on my spit Chevy straight 6 - love them. ~ Carl
yup, I was there when mine were made. I wanted mine packed with lathe shavings like the original ones instead of stainless steel wool like they do now. Clark told me if that is what you want, bring your own shavings and pack em yourself. So, I did
Here's my RPU Y Block running through Porters with 2.5 " pipes. As you probably know it shares the flathead firing order.
Like this. The garage door tension springs you see on the shaft above every roll up sectional garage door.
Seriously? I had no idea. Seems like a lot of unnecessary weight, and the labor to weld it slightly stretched. Why not perforated tubing like everyone else?
because that is the way they have been making them since the 1930's. these mufflers are hand made and worth every penny they get for em
oh man, that does seem like it would be heavy. But if it's on a few hangers, I guess it doesn't matter.