Any opinions on the best sounding exhaust/mufflers for a 1970 SX 455.

I'm looking for that cool 70's muscle car sound that really turns the heads when the RPM starts to rock......

include pipe size and mufflers. Thanks.......

 

Do they still sell glass packs? Back in the sixties and early seventies those sounded great, however, there was some discussion about them being street legal in California. But they were still popular and on many cars.

 

Here's an article that may interest you. http://autorepair.about.com/library/a/1e/bl966e.htm. Also you can do a Google on "Glass Packs" and all sorts of info emerges. They are still going strong.

 

This is a VERY subjective question. Some folks swear by Flowmasters, the rest of us swear AT them. Personally I like Walker Dynomax Turbos. Nice sound, no obnoxious droning, and the consistently outflow the (no)Flowmasters in magazine tests.

 

O'Reilly's has a display where you can actually here the Walker Dynomax Turbos compared to others. Keep in mind each car will sound different. Flowmaster has several series like 50 and 60 series (nothing to do with age of car) with the higher number being a little quieter. I am sure other parts stores have the same display. If I were doing a 50's car like Dan's 57, I would go with the old standby Smitty's to be period correct. A set of those on a 50's Olds is music and they are glasspacks. I would not put them on your car though. I would follow Joe' advice for your car. Use an X pipe or H pipe and I think you will be happy.

 

X2. On all counts.

 

Dan, I just went to the link you had. That guy is lucky to be alive after what he did with those glasspacks.

 

I've heard of people doing that before. Supposedley burning the fiberglass out of the glasspack makes them louder. I know that the two 2.5" x 45" Thrush glasspacks I have on my 71 98 sound great. At least I like the way it sounds.

 

I run smittys with 2.5" exhaust mendral bends all the way back no X pipe as my exhaust routes through the frame rails on the 57. The 455 sounds sweet at idle and does not drone at hiway speeds but when you get on it....sweet

 

Personally I LOVE the sound of the Flowmasters on my Olds.
Full 3" system with h-pipe on a built ongine with headers.
My Cougar has Dynomax Turbo with a 2 1/4" system and is much mellower but still has a nice deep sound to it. This engine is stock but with an Edelbrock intake and thru the stock manifolds.

I have a buddy with a built 351 in a Mustang running Hooker AeroChambers. They have a totally different sound to them. The only way I can describe it is a "Growl"

Whatever choice you go with however could be moot compared to the comparable sounds you hear. If your motor is stock and you're using manfolds as opposed to headers, you sound would be different from my Olds if you ran the same mufflers as me.
The only true test would be to find a comparable set-up as yours and use that as an example. Either that or go out and buy up a bunch of mufflers and do a test for the rest of us.

 

I'm with Joe on this one. On older cars walker sound really good.

 

This all sounds like good advice, I was leaning toward the thrush glass packs, to my knowledge they were popular in the 70's, I will go to O'reilly and check out the sounds, Thanls for all the help !!

 

im running the magna flo 2 1/2 stainleess steel exhaust with x pipe.
the fit and sound are just what i was looking for. i would recommend it for that classic muscle car rumble both at ide and wot.

 

I have 2chamber flowmasters on my 69 cutlass car sounds really good especially when its hammer time but i have cherry bombs 2ft which thet call glass packs on my 72 olds deeper sound like the cherry bombs better both cars have manifolds no headers and i get alot of complements on sound so i think whatever you choose should sound good

 

I'm with Joe. I have Flow masters on my drop top and I hate them ESPECIALLY on the highway.

 

Thanks for the headsup on the Smitty's. I've been thinking about this post since this morning. The sound of my 57 is really sweet and powerfully mellow and I will need to take a closer look at its exhaust configuration. (I may have glass packs and not even know it - I have been discovering pleasant surprises on this car since recently purchasing it).

 

I thought it sounded dangerously wild - I can recall in my youth during the sixties some fairly radical things like that example being discussed in auto shop among the kids (not from the instructor). Never had glass packs, so what do I know....just like the mellow sound of most I've heard.

It was also good that Joe clarified staying away from Flowmaster- but hard to draw conclusions as sound is in the ear of the beholder. I wonder if there is some technical reason to not use Flowmaster?

 

I will be going with spintechs, they are sound awesome!
http://www.youtube.com/watch?v=N7fqE2SqGA8

http://www.youtube.com/watch?v=SER1gBLn2N0

 

I have had flowmasters and walker dynomax. I like both of them but the flowmasters are more aggressive sounding than the dynomax. So like others said, it's a matter of personal preference.

 

You guys remember Cherry Bomb Qs? They sounded like the walkers. Mellow. I have perfect stock mufflers right now but will be changing to Walkers in the winter. Looking for a deeper sound.

 

I've had both Cherry Bomb and Walkers for me the walkers lasted longer. The Cherry Bombs were on a 4x4 truck so that didn't help them any.

 

I bought the cheapest (loudest) flowmasters they had ...

regardless Trumpet tips are da kine ...

 

I have flowmaster,walker dynomax turbo and pypes street pro mufllers on BBO cars and I like the walker the best Flowmaster second and pypes third.. These are all 2.5 inch systems.

 

Has anyone used Supertrapps? Don't they let you customize your exhaust tone?

http://www.supertrapp.com/

 

how do you describe the exhaust that you can tell it's an Oldsmobile just from the sound????

How did they do that???

 

Hi PopHop,
I used the DynoMax turbo muffler with a 3" exhaust but then I was pushing 500+ hp. It was a perfect old muscle car rumble. Later I put on an X pipe and the resonance in the cab of the car was terrible but without the X, it was fine. Their web site has a place where you can listen to most of their mufflers. If I were you, I would call them and describe the sound you want and let them suggest. I bought mine 10 years ago and their line has changed somewhat.

 

Spin Tech Pro Streets x 2

 

I have the magnaflow 2.5" with the tru x pipe on mine now. I am going to ditch the x pipe, don't like the ricey sound, and probably go with long case super turbo's.
I guess I don't need to gain 1/10 or so in the quarter as this is street only. There seams to be alot of hype for the x or even the h on street driven cars. I am not spinning 7-8k rpm like the nascar guys. But the vendors make alot of $ on promoting race products to the general public. We just HAVE to have it!
Granted the h pipe and x help, but not for me.
I like the old true dual sound.

 

I like the original sound. I went with Gardner Exhaust Systems. I love the sound.

 

I like the original sound. I went with Gardner Exhaust Systems. I love the deep narly rumble.

 

OOPS...Sorry for the second and third post...........

 

Oh yeh ...

I have a crossover behind the trans ...