Flowmadter mufflers
Thread Starter
8th Gear
Joined: Jul 2021
Posts: 8
Likes: 1
From: Decatur IL
Flowmadter mufflers
Hello all,
I’m going to have flowmaster mufflers installed on my 1980 corvette. They seem to have many different types. I don’t want it to sound like those dumb butt cans do on the imports! Any advice on which style/ type of Flowmasters that will sound good? Thanks
I’m going to have flowmaster mufflers installed on my 1980 corvette. They seem to have many different types. I don’t want it to sound like those dumb butt cans do on the imports! Any advice on which style/ type of Flowmasters that will sound good? Thanks
Drifting
Joined: Aug 2010
Posts: 1,797
Likes: 304
From: Charlotte Area North Carolina
My son had 2.5" inlet and 2.5" outlet Flowmaster 40's put on a 350 ci / 350 Hp 1969 Coupe and they sounded great. They had a nice deep rich sound at idle. Only downside to them was a drone hum sound inside the car at certain speeds but that was easy to fix by just speeding up or slowing down a couple of Mph.
I have some video clips of his car at idle with the Flowmaster 40's running if you want to shoot me a private message with your email address. Then, you can hear them for yourself if that helps at all.
I have some video clips of his car at idle with the Flowmaster 40's running if you want to shoot me a private message with your email address. Then, you can hear them for yourself if that helps at all.
Last edited by KS69Coupe; Nov 4, 2021 at 12:01 PM. Reason: added video
Melting Slicks
Joined: Jul 2019
Posts: 2,297
Likes: 2,016
From: MA/NH Seacoast
I run Flowmaster 40s on almost everything I own. They sound amazing
There are better mufflers out there that flow better and can make a little more HP, but I'll sacrifice a little on a street car for that sound.
There are better mufflers out there that flow better and can make a little more HP, but I'll sacrifice a little on a street car for that sound.
Instructor
Joined: Jul 2021
Posts: 148
Likes: 107
From: Boston
Wanted to add I also had the Flowmaster Outlaw system on my last Mustang 5.0, it was too loud and drone was difficult to get past.
Go with the American Thunder mufflers (commonly referred to as Flowmaster 40's)
Go with the American Thunder mufflers (commonly referred to as Flowmaster 40's)
Drifting
Joined: Jun 2005
Posts: 1,950
Likes: 498
From: Chino Hills CA
I had a set on my '55 Chevy and still have a set on my Van, and for me, they're too quiet, although they have a nice resonance at about 2300 rpm. On both vehicles I installed a set of electric cutouts and they sounded best when cracked partially open, kinda like glass packs. So of course on my C3 I have glass packs asa "resonators".
Thread Starter
8th Gear
Joined: Jul 2021
Posts: 8
Likes: 1
From: Decatur IL
Mufflers
My son had 2.5" inlet and 2.5" outlet Flowmaster 40's put on a 350 ci / 350 Hp 1969 Coupe and they sounded great. They had a nice deep rich sound at idle. Only downside to them was a drone hum sound inside the car at certain speeds but that was easy to fix by just speeding up or slowing down a couple of Mph.
I have some video clips of his car at idle with the Flowmaster 40's running if you want to shoot me a private message with your email address. Then, you can hear them for yourself if that helps at all.
I have some video clips of his car at idle with the Flowmaster 40's running if you want to shoot me a private message with your email address. Then, you can hear them for yourself if that helps at all.
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Drifting
Joined: Jun 2015
Posts: 1,345
Likes: 753
From: Doctors Inlet Florida
I had 50's on my Corvette before I installed side pipes. They had a nice DEEP tone but without the nasty resonance that the 40's are known for. We put them on my Father in Laws 1970 big block Charger and they sounded great on that as well.