And unless you have a rusty '76 Monte Carlo with HiJackers and slots- it AIN'T Thrush.
I'M JUST SAYIN' :)
Anyhow, from asking around, what I found is that it's pretty much Smithy's or Brockman's. Of course, any "Glass-pack" sound will work, I guess. But will it??
..........Are Cherry Bomb header mufflers the same as a tight, skinny dual system with long, Steel-packed Brockman's Mellow Tones?
I'm guessing "NO".
So I called Brockman Custom Parts in Hagerstown, Indiana.
They still hand make Traditional style straight-through mufflers, packed with either fiberglass or steel wool in somethig like 5 different lengths.
From talking with the guy on the phone at Brockman's I found out that the mufflers packed with Fiberglass strands in a cheap Glass-pack, give that hard "BRAPP"- starting out somewhat mellow, and getting increasingly louder until they pretty much blow out completely.
The Steel -packed mufflers last much longer and have a consistent, mellow sound--in short they just sound better. I'm all grown up now, so I ordered my self a set of 26" Steel-packed mufflers from Brockman.
I think it was about $70 for the pair.
Tech Talk:
1) Different Mufflers Filter different Sound Frequencies.
A traditional, straight-through "Glass-packed" type of muffler tends to filter out the lower frequencies. A modern Turbo muffler filters out higher frequencies, and produces a low-pitched "Rumble". It's worth mentioning that one key difference between high frequencies and low frequencies is that high frequencies are directional, while low frequencies are not. In other words, it's possible to "baffle" or reflect a high frequency sound, but a low frequency sound will direct energy THROUGH things like car frames, windows, bodies, steering clomuns, etc. It's all about undertanding what you want.
2) The closer a muffler is to the exhaust manifold/header, the louder it is.
I think this is because the exhaust gasses are hotter close to the manifold- therefor generating more pressure within the pipe/muffler.
3) The longer a muffler is, the more quieting power it has.
But-- Since absorption of acoustic energy isn't necessarily the same as exhaust flow restriction, quiet mufflers aren't necessarily more restrictive, and loud mufflers aren't necessarily more free-flowing.
3) Multiple chambers and offset inlets/outlets quiet a muffler, but almost certainly produce added flow restriction. The technology within modern Turbo mufflers pretty much creates an exception to this-- many chambered turbo Mufflers flow better than a cheap straight-through muffler. but in general, you can consider this to be true- especially when comparing similar mufflers.
I wish I still had the tech links-- I just didn't hold on to them as muffler tech isn't that crucial to someone running a stock motor.
Vendor links:
http://www.brockmancustomparts.com
http://www.speedwaymotors.com/p/1703,416_Smithys-Glass-Pack-Muffler.html
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