I have a 2.5 exhaust with shorty headers. Dumb question. I just want to run a short pipe into a glasspack and turn it down. If I bought a 3" glasspack and just put an adapter on it will it give me any deeper louder tone than just putting on a 2.5 glasspack with no adapter??

 

I guess as I've gotten older I lean towards a more powerful sound, rather than a loud noisy sound. Also the fewer bits you have in the exhaust system the better. Nothing worse than two clamps right next to each other. I'd go with some Flow masters or the like to fit your 2.5 inch pipes and weld them . Just my 2, worth about 1.5 cents after taxes.

 

I want it low and loud lol. Just didn't know if i benefit by putting the adapters and 3" glasspack over straight 2.5 to the glasspack.

 

I do not see how a 3" glass pack would be any different than the 2.5". Exhaust sound depends a lot on what engine you are running and how it is built.

 

I second the flow master...also, depending on which engine....cross overs might give you an improved rumble. Really be sure you want "loud". A more quiet powerful rumble is much friendier. Whenever I picked loud...I always ended up getting over it real fast and going for the lower dcb rumble. I dont see how 3" glass pack would give you a better tone than the 2.5 but I bet the folks at mangaflow could give you some good feedback on that. Again, think about "loud" in the equation. When your going down the road all by yourself, you might wonder why you have a headache.

 

With glass packs the only way you get it louder is to make them shorter, with the least amount of bends in the short pipes and even more noise the closer you put it to the motor and then the packing blows out. I personally dislike flow masters and any turbo style mufflers (sound to tinny and muscle car like since I'm into old hot rods). I've run glass packs on every vehicle that I have or had. You can get some header mount glass packs and then run short pipes, I have 16" glass packs on 2 cars with full exhaust and they have a nice rumble. One has a nice bark on decel because they're blown out. I have 24" packs on my panel truck with a 390 and exits in front of the rear wheels, but it has a few 90° bends in the pipes so it's not overly loud.

Might check out Porter mufflers.
Porter Mufflers ? The original high-performance muffler!

 

If you want noise use 4" piece of pipe necked down to fit your 2.5 glass packs.make it 12 to 14 inches long on the 4" part.
Elmo

 

my thunderbird , past tense as it's gone now , had flowmasters with 2.5 inch duals on it and while it sounded good i still prefer the rumble of my 53's flatty with headers , 24 inch glasspacks and duals . it is a matter of preference and some of the more modern stuff sounds better with chambered mufflers like my 95 bird , but i will always prefer the note of a glasspack equipped set of duals over the newer stuff . this is of course from the perspective of a living arseholeasaurus ....................

 

I wish I could make a video so you could hear the exhaust on my 47 Cadillac, but it is in hibernation for the winter. I have full duals that snake through the X frame with 40 series flowmasters, and there is nothing "tinny" about it. It rumbles nicely at idle but amazingly when you stand on it this thing WRAAAAAAAAAAPS just like glass packs. You would swear there were smittys on it, it is just crazy. I think it is because of all the bends in the pipes, no other car I have had with flowmasters did this, but they all had pretty straight pipes going to the mufflers.
I dont use glass packs anymore because they are usually loud all the time, and I only want it loud when I stand on it. Fun when I was 18 but not anymore. I like to be able to have a conversation or listen to the radio.

 

[QUOTE=drptop70ss;15158129[
I like to be able to have a conversation or listen to the radio.


You can listen to the radio, just turn it all the way up.

 

I don't understand why you need an adapter, do the headers have 2.5" collectors?

 

Yeah if I wanted to run 3" glasspack sand just turn them down to the ground.

 

Toby that's sharp
Elmo I think your on to something.
I just want it low and loud. Not going anywhere far or e en putting a radio in it. Lol

 

the 3" shorty glass pack, will have virtually no effect on the sound. if the header is 2.5", just stay with 2.5" glass packs.

personally, i'm going to run with side pipe glass packs. 3-4 feet long... nice low tone and not so loud. (same inside diameter as the head pipe).

 

You may wind up with less volume running the 3 inch glass packs. Doing so will allow the gases to expand, as compared to the headers and exhaust pipe. Think of any wind instrument. As one "plays" the keys, one is allowing the air to escape at different lengths, of the tube, and valve sizes. That's what creates the different sounds being played. The bigger the valve, the deeper, (lower), the tone.