Exhaust mufflers for a 1970 455 GS

Hello guys!

Before starting I apologize if this isn't the right category for posting this but I wasn't sure about where should I open this thread.

My 70 GS has his stock exhaust setup, some of it isn't in great shape but what I really don't like is that the car doesn't has a "cool" sound.

The exhaust is very quiet and only makes a noticeabl sound revving the engine, I'm looking to change the mufflers for some with a deep tone sound but nothing too loud to piss off the neighbors or be uncomfortable while driving and speaking. The first thing that came to my mind were Flowmaster mufflers but I have a pair of super 44 Flowmasters in my Plymouth Fury 360 and I like the deep tone from them but don't like they are too loud. I've always read that Magnaflow has a way better quality and sound than Flowmaster but I've been checking Magnaflow's website and don't have idea how to search for them mufflers series

Any recommendation?

 

I like going to you tube and googling the car and year and you will see different videos and examples

 

I like the Dynomax Super Turbo mufflers. Good throaty sound without being too obnoxious but noticeable when you get on it. Got mine from Summit Racing.

 

Agreed, Walker Dyno max! Put them on most everything.

 

Too many people obsess over which muffler makes the "nicest" sound. They'd be better-off building a more-powerful engine, and let the engine determine the sound rather than the muffler.

Put another way: A "Hot-Rod" exhaust/muffler on a stock engine sounds like crap. A mild-tone exhaust/muffler OF SUFFICIENT DIAMETER on a performance engine is very pleasing. I'm not saying the muffler/exhaust system is unimportant, or that it doesn't affect the sound--but a powerful engine exhaling through a suitable exhaust system just sounds different from a stocker exhaling through the same system.

Same thing goes for camshafts. Thumpr-style cams with deliberate rough idle on otherwise stock or near-stock engines, (without the true power (compression?) of a "built" engine) are a readily-identified by people with experience as a "cheat". They're only fooling the people who can't tell the difference...and who cares about fooling them? Might as well ground one plug wire and pretend you've got major engine upgrades.

 

Our 60's cars and I were contemporaries. The prowling grounds were the local drive-ins.My memory is,for the most part,not of any specific exhaust note. That said, for whatever reason,I can remember being behind a cruising '67 442 that sounded SO good that it has stuck with me. Can still hear it echoing in the canyons of my mind when the topic of mufflers,etc arises. An automatic w/resonators? I dunno,but it was righteous!

 

I agree with the Walker recommendation. If you need side in/side out, get the 17749. If you need side/center, it’s 17748. The exhaust TA sells calls for side/center. I had that installed yesterday with the ‘48s and it fits, looks and sounds great.
Patrick

 

Walker over Flowmaster. All day long.

 

It’s funny-I took my own mufflers and exhaust to the shop (which is a Flowmaster dealer) and the guy looked at the mufflers and warned me that they’d be really quiet! I guess he’s used to what most of his customers ask for. He did say the TA kit fit a lot better than the Flowmaster kits most guys bring.
Patrick

 

I have Dynomax on the Wagon and Flowmaster 40s on the Stage 1 car. I like the Flowmasters a lot more than the Dynomax. Just MHO.

 

Ok if you need to change all the exhaust system go with Gardner exhaust they have stock muffler or deeper tone ones.
The quality is bar none.Always put there concours package on all the cars I have restored everything fits and the sound is great IMO.
Alain

 

I've tried lots of mufflers and you you want best flow/performance with no drone you can't beat the Walker UltraFlo.

 

Spintech over all previously mentioned.

I’ll see if I can post a vid.

 

Hopefully these links work.

 

^^^ Sounds like a cackling fart-can. Horrible.

But then "beauty" is in the ear of the beholder.

 

Yeah...Not a fan.

 

Well, “there’s an ass for every seat.” I love it, and get compliments at every cruise night and show.

Just offering a suggestion along with a sound clip.