PDA

View Full Version : which street mufflers

fsdragster
07-28-2009, 10:10 AM
just trying to get an opinion on which mufflers to run on my 509 bbc for the STREET. looking for a nice but not obnoxious sound both in and outside. also any opinions on using either a x or h pipe. have a 4 link so not sure if i can get the exhaust all the way out the back. the car is a 69 chevelle with 33-22-15 and sits pretty low. thanks frank
russ67chevelle
07-28-2009, 08:49 PM
h pipe was popular years ago, now the choice goes to x pipe.fortunatly you can have your cake and eat it too.they sell a x pipe with side outs that you can open for the open headers roar at the track,then cork em up and drive on the street.

look in jegs
DirkaDirka
08-01-2009, 11:21 AM
As far as mufflers I have always liked the way flowmasters have sounded. Depending on with one you get would depend on how they sound. To me they have a nice clean mellow tone until you open the throttle wide open. But this is just my opinion.
fsdragster
08-05-2009, 10:55 AM
JUST GOT BACK FROM VACATION. WILL ENDING THE EXHAUST JUST BEFORE THE REAREND AND NOT ALL THE WAY OUT THE BACK MAKE THE NOISE LEVEL REALLY DIFFERENT. LEANING TOWARDS PYPES RACE PRO,3INCH. WITH X PIPE.
oldandtired
08-05-2009, 11:47 AM
With an X pipe (or H) you get more torque due to the pulse matching in the tubes. This also"calms" down the idle. For those who like the nasty idle sound, do not combine the tubes.
Dave
FullTimeRacing
08-05-2009, 12:11 PM
there will be a huge diffrence in noise with turndowns then out the back.

In my street monte,it was over the rear for awile never vibrated the car.

Then I wanted to go faster and cut the tailpipe off and put turndowns on it and wow,it rattled everthing.


I asume the noise was boncing off the ground.

I think if I would have turned it out in front of the rear tire it would not have been so bad.

JMO
fsdragster
08-05-2009, 04:03 PM
I DEFINATELY THINK THE FARTHER OUT THE BACK THE BETTER AND IT SHOULD HELP WITH GETTING THE FUMES FROM ENTERING THE CAR. STILL CONCERNED WITH MY 4 LINK BUT I DO NOT PLAN ON ANY STRIP RACING ANY TIME SOON AND THE CHANCES OF A HARD HOOK UP ON THE STREET IS NOT VERY LIKELY. ( NO ) I DONT PLAN ON STREET RACING IT JUST AN OCCASSIONAL 1ST THROUGH 3RD.
fsdragster
08-10-2009, 04:21 AM
ON PYPES WEB SITE THEY CLAIM THERE RACE PROS ARE QUIETER THAN THEIR STREET PROS. ? WOULD THINK THE OPPOSITE. I WAS ALSO TOLD BY USING THE X OR H PIPE YOU WILL LOOSE THE SO CALLED RAPPING NOISE WHEN YOU BACK OFF ON THE PEDAL. ( ANY TRUTH ) THIS IS FOR THE STREET NOT THE TRACK. THANKS FRANK
RAYSIN
08-10-2009, 07:14 PM
Borla makes probably the best! (stainless) flowmasters rot out unless you drill a drain hole and the smaller 2 chamber are noisey as shit but are likely what will fit with the 4 link, the borla are pricey but worth it! IMO
OneBadGMC
08-10-2009, 08:08 PM
Borla makes probably the best! (stainless) flowmasters rot out unless you drill a drain hole and the smaller 2 chamber are noisey as s but are likely what will fit with the 4 link, the borla are pricey but worth it! IMO

Stop driving like grandpa and your mufflers won't rot out. :shock:
zipper06
08-10-2009, 09:03 PM
I personally think it's better to turn them out in front of the rear tires, you can use flat exits like the NASCAR do for clearance and most of the viberations are gone.

JMO

Zip.
Tod74
08-10-2009, 09:22 PM
I think I read on SPEEDTALK that flowmasters were not a very good muffler. NOT VENDOR BASHING just mentioning what I read...It seems that an engine builder on there had dyno data to back that up, but I can't say for sure they are not good mufflers..but if you aren't racing it doesn't mater I guess. I always liked the sound of plain jane turbo mufflers with a crossover pipe turned down no tail pipes. Nice and quiet(sorta) with a nice sound. I would never run dual exhaust without a crossover pipe..I HATE that cackling sound you get without it, if that makes sense.Almost like those hideous glass packs.
DirkaDirka
08-10-2009, 09:33 PM
Tod Tod Tod.........I know you aint bashing on glasspaks. Man what am I gonna do? LOL I had glass paks on my first car with was a 1970 Ranchero with a 302 dual exhaust with no crossover pipe. I loved the way it sounded. Plus when they were nice and hot i stuck a hose in it to get all the "stuff" out of them. It had a nice deep rumble to it. Now I would go with flowmasters cuz I love that sound when they are bout halfway then dump down.
OneBadGMC
08-10-2009, 09:58 PM
http://www.streetperformance.com/ART/PRODUCTS/100636/th99large50230FLT.jpg

There's what ya need... along with a set of ear plugs so ya dont go tone deaf!!!
DirkaDirka
08-10-2009, 10:01 PM
:lol: :lol: :lol: :lol: :lol: :lol: :lol:
signsbyesa
08-11-2009, 07:34 AM
cheery bomb has made a come back, i used the hush thrush and
they sounded great, i don't like very loud on the street, good
luck :wink:
TheRabbit
08-11-2009, 09:56 AM
Tod you may need to call me FOR THERAPY!lol How can you not like good old glass packs on a big block??! Nothing sounds better than the deep rumble of a new set of glass packs!!
RAYSIN
08-11-2009, 11:45 AM
Borla makes probably the best! (stainless) flowmasters rot out unless you drill a drain hole and the smaller 2 chamber are noisey as s but are likely what will fit with the 4 link, the borla are pricey but worth it! IMO

Stop driving like grandpa and your mufflers won't rot out. :shock:

fsdragster said he was looking for mufflers for a street car, probably not gonna be driven every day, most guys start their cars periodically when there not driven daily thats where the moisture builds up and the rot starts, i have the flowmaster 2 chamber on my street strip car and havnt had issues but i drive it hard every week, stainless is the way to go for street use, magnaflow makes a good stainless performance muffler too, i put one on my tow veh 3 years ago, still looks new
fsdragster
08-11-2009, 12:40 PM
that is one of the reasons why i am leaning towards the pipes. STAINLESS WITH A LIFETIME WARRANTY. ? ENDING JUST IN FRONT OF THE REAR TIRE WOULD KEEP THE FUMES AWAY. FOUND A DEALER WHO SELLS CHEVY LOGO DESIGN EXHAUST TIPS. ( SOLD BY AUTO BARN ) SEE WHAT YOU THINK. APPRECIATE ALL THE HELP,FRANK
ashbros
08-11-2009, 09:35 PM
When I was a kid I used to use the turbo thrush mufflers,

Kind of tough to listen to the radio,but I got by.

I like the Borlas. For my second choice I would consider the Flow Masters.

My boy just put a set of magna flow mufflers on his vette and I must admit they sound pretty wicked.
Tod74
08-11-2009, 09:42 PM
.

My boy just put a set of magna flow mufflers on his vette and I must admit they sound pretty wicked.

it's the corvette motor.
fsdragster
08-12-2009, 04:11 AM
being my motor is a 509 10.8 solid roller will this play a major difference even with the quieter mufflers. more concerned with startup and normal takeoff sound levels to i get out of my neighbor hood.
TheYellaBrick
08-12-2009, 06:01 AM
Push it down the block a ways before you fire it up ! :P :P :D
I did that when I was in High School to 'sneak' out of the house to go 'driving' on the weekends.
DirkaDirka
08-12-2009, 08:59 AM
I tried that trick and still got caught. I even tried to push the car back in the driveway. I guess it doesnt help having Squeeky springs either does it??
OneBadGMC
08-12-2009, 10:33 AM
.

My boy just put a set of magna flow mufflers on his vette and I must admit they sound pretty wicked.

it's the corvette motor.

Yeah, it's the head and cam design on that motor, more than the mufflers.

If you fire that thing up open headered, it sounds like a beast.
fsdragster
08-14-2009, 12:00 PM
DOES ANYONE HAVE ANY PROS OR NEGATIVES WITH THE PYPES PRO RACE MUFFLERS OR ANY OTHER RECOMMENDATIONS. THANKS FRANK
TheYellaBrick
08-14-2009, 03:35 PM
.

My boy just put a set of magna flow mufflers on his vette and I must admit they sound pretty wicked.

it's the corvette motor.

Yeah, it's the head and cam design on that motor, more than the mufflers.

If you fire that thing up open headered, it sounds like a beast.


Compression also has a great deal to do with that 'sharp' exhaust sound.
russ67chevelle
08-14-2009, 05:36 PM
got back from chassis dyno from this guys shop...

http://www.youtube.com/watch?v=_FdF0wgTikM

looks like my homemade jobbers made best of 625 hp@7000 rpms.best open headers run was 650@7000. thats on roughly a 800 hp 572.

on a 260 hit of nitrous it made 854@7000 thru mufflers with air fuel ratio ranging from 10 to 10.5 to 1

i realize i need to relieve pressure and not to dead head regulators even though my pump has a return right off it to fuel cell. when fuel pump is on with 6 pounds flowing fuel, not flowing its like 12 pounds thus telling with the rich condition on spray it wants a return line.......

final answer, 3% power loss with home made mufflers...not bad for 3" id 4" od bullet mufflers with half inch holes swiss cheesed in the 3" pipe.
fsdragster
08-15-2009, 10:35 AM
spoke to my fabricator and says between the 4 link bracing and all the other bracing there is no way but before the rearend and turning to the outside before the rear tire is also history. still hoping to get the x pipe atleast. guess i will have to experiment with different mufflers and only weld the correct ones.
ashbros
08-15-2009, 10:55 AM
I am not sure what type of car you have, but I had a 4 link car with exhaust out the rear. You just have to take your time and get creative....
fsdragster
08-16-2009, 04:05 AM
69 chevelle fab9 4 link with wheelie bars. going to meet with the fabricator on wednesday. 2 heads might be better than one in ths case. what is the brand of mufflers that you installed and are you ok with them. THANKS FRANK