has anybody ever ran dual exhaust(turbo mufflers) on manifolds that exit b4 the rear wheel with an H-pipe? if so how did it sound i'm trying to get the sound of a big block challenger with resonators now i would love to run the pipes all the way back but i have a 76 gas tank than only has 2"s between the leafs and the tank also are glass packs really that loud like everybody sais(when exiting b4 the tire) i just saw a econoline with a 460 with a 30" glasspack and it didnt sound that loud(actually my old setup sounded 3 times as loud) when jay came over he said that after two weeks the glasspacks get annoying but to me the open pipe is not loud enough
Got no idea what that would sound like. And no, Glasspacks aren't all that loud if you use the right ones. The H pipe quiets the whole thing down a bit.
Sound of an engine is actually pretty complicated... The exhaust velocity has everything to do with the 'volume'. Larger pipe slows exhaust velocity, which makes the sound very deep and can cause drone if the pipes exit anywhere other than the back of the car. Small pipes don't have the low exhaust tones, but rather have loud sounds due to high exhaust gas velocity. You can also vary the sound of your exhaust by varying the size of pipe in the system. Also remember that as the exhaust gasses cool, they shrink and lose velocity. So you could actually build an exhaust with progressively smaller pipe that flows great, but it would surely sound different. Point being that muffers have different sounds when the pipe size is varied. So a truck with glass packs and 3" pipe will sound deep and 'rumbley', while a vehicle with the same system, only with 2.25" pipe, will be considerably louder. Btw: I have run several different versions of side exit exhaust. I don't recall ever using a balance pipe though. Turbo mufs sound best IMO for this. Glass packs on side exit are very loud for you when the windows are down, and everyone else all the time. Flowmasters tend to drone in the car when the exit is anywhere before the axle area. Turndowns right at the axle are not so bad, but anything else will get old. Warlocks and side exit got me a ticket... Won the court battle, but still got the hassle. They were very loud, deep (3" pipe), and droned some.
i am running 2 30" glasspacks that end right in the middle of my 4door and i dont think it's 'too' loud. its rumbles yeah, but i like the sound. kinda makes ur head rattle around when on the interstate at 65 and 70.....but gotta love it
wow great stuff ratio411 thanks everybody for the info i think i'm gonna buy both mufflers(turbo and glass) and just sell the ones i dont like
Best sound I have ever heard on a Maverick (other than an open exhaust stroker 700 HP engine or a turbocharged V8) was my brother's '74 2 door. 88300 headers led into dual 3" pipes that went into a pair of Hooker 3"-2.5" reducer cones (long transition) and then into a 2.5" X pipe that we made, then on back to the Super Turbo mufflers, which dumped right at the rear axle. Quiet at idle, and not loud when he stomped it, but man, it sounded GREAT. Quiet yet throaty...but when he got some RPM going (3500 and up) it really came alive, sounded like a race engine in all honesty. I did the same thing on my old '84 Mustang but I used a pair of 3.5" 3 chamber flowmasters...they were loud, droned at 1800-2200 RPM, but they ran good and were free...so I left em on there. It was a little more throaty down low due to the larger muffler size.
yeah i would like a x pipe but a h pipe is easier to make(i will be making the exhaust system myself) RE:challanger sound on my way back from the store i got to thinking that BB rev less than SB so that would affect the sound also i was on another forum and i found out that some people do this
To blow out a set of glass packs and make them louder is kinda silly. If it made a performance difference I could see it, but they still flow the same with or without the packing... or at least close. Those muffs are full of tube and fins. If you want to flow like open pipe, yet still have some sound dampening, then the Dynomax Race Bullets are the way to go. They are very free flowing glass packs, more or less. They are packed with ceramic fiber (lasts longer) and have not fins or protrusions to disrupt exhaust flow. I have ran these in place of stock muffs and picked up mucho power. They do quiet the sound some, especially at/near idle, but as the rpms go up, so does the volume in a major way. I have a 3.5" race bullet on one of my Powerstrokes, btw...
i dont know about the Hpipes and 30inch packs. I have dual manafolds not headers with 15inch Glass packs that cut out infront of the rear wheels. sounds loud and mean. but i wish i had an h or x pipes. just to make it have a little more snarl.
I ran stock manifolds into dual Patriot Side Pipes (2" inlet to 3" outlet). It sounded GREAT!!! They were just long glasspacks, I think 36 or 48" long (look it up in JEGS or Summitt). No popping, nice deep tone, guys at the track thought it was VERY powerful, until I left the light Afterwards, they commented on how nice it sounded for a "stock" 302. I loved them, but lost them because they were next to impossible to use with headers. But, straight out without going sidepipe and using the 'packs, I think it should sound the same.
The sound realy depends on how much pipe you use. the shorter the pipe, the louder the sound, the longet the quieter. i have a short amount of pipe and i set off car alarms with ease.
if you like the droning sound and the refurb sound and annoy people then yeah cutting them before the axle.. thats presuming your droping it down right at the axle. you can actually tune the sound by facing the cut downs in differant directions. but if your actually poking them out under the rockerpannels right near the tire... then well i'm sure you got that answer from somone else. but be prepared to clean the side of your car all the time! your gonna love the soot! i'd go with turbos muffers resonable and sound good with out loss of too much backpressure. IMO glasspacks blow out, you lose HP and seriously its old technology.. think about why they don't run that type of muffer style on newer performace cars.... exactly! and about your gas tank in the way for the exaust all the way out the back... it can be done.
