muffler opinions

[capt_lunker]

Building my new motor, swapping the transmission from a 350 to a 400, I'm thinking I want to change my mufflers! They are 8 years old, and are in great shape.......they are just way too loud! I want to say they are a 50 series race muffler from Flowmaster. I'm guestimating a tad over 500hp, and low to mid 11's with the new motor so I need a muffler that can handle it but I'm also looking to quiet it down a bit. The old motor was 10 1/4:1 comp, and I'm guestimating the new one somewhere in the ballpark. Headers are Hooker Super Comp, 1 7/8 primaries and exhaust is 3" inch and exits behind the rear tire. There is also no "X" pipe or "H" pipe.
Any suggestions or info would be greatly appreciated 😀

 

[jrm81bu]

I'd say Magnaflow or DynoMax Ultraflows. Both are a straight through design but will prolly be quiter than Flowmasters.

 

[capt_lunker]

Awesome man, thank you!!!

 

[beermonkey9417]

i know cherrybomb has these mufflers with internal flaps to muffel the sound when yer cruzin around town and whe ya punch it they open up so ya get theta nice v8 sound.

 

[larryo454]

Hi hooker aero chambers or hooker maximum flow mufflers.I use the aero chambers on my bbc and not going to use nothing but hooker gear.

 

[G_Body_Enthusiast]

Hi hooker aero chambers or hooker maximum flow mufflers.I use the aero chambers on my bbc and not going to use nothing but hooker gear.

i use a maximum flow muffler and it flows only 5 CFM less than an open pipe but isnt loud at all IMO. i give a thumbs up to hooker also. i like their mufflers.

 

[Peter]

my magnaflows aren't bad at idle and when you want to open them up they get loud. i highly recommend them

 

[Conan-64]

Anyone use PYPES? i was thinking of picking up a coplete exhaust 2.5" with x pipes and mufflers. looking at the web site i beleive thet have full 3" exhausts as well.

 

[G-Body_Vet]

Anyone use PYPES? i was thinking of picking up a coplete exhaust 2.5" with x pipes and mufflers. looking at the web site i beleive thet have full 3" exhausts as well.

IIRC, their site should have sound clip/videos of different mufflers, pipe diameters, engine combos, etc.

I'm going to use the Thrush fully welded mufflers again. I had them on a '78 Lemans and thought they sounded decent. The fact that they're only $30 a piece helped influence that decision. http://www.jegs.com/i/Dynomax/289/17656/10002/-1

They offer them in stainless too for $70 a piece http://www.jegs.com/i/Dynomax/289/17644/10002/-1

 

[87BlackSheep]

Well with headers and 3" pipes it's really hard to quiet down even a 307 lol. But if you wanna keep that flowmaster sound, I'd go with the 30 series. I used to have one on mine at first and it gave me great tone but kept her real quiet.