jhopper408

What do you guys think about flowmaster mufflers. There very loud, I don't really mind that.but are they really worth the sound? Are they really adding that much more power?

MelWff

Power no sound yes. Headers add noticeable power not mufflers.

v2racing

On a stock engine application that is probably true, but on high horsepower apps different mufflers designs can show a dramatic difference from one to another.

Mike

jim2527

I had 40 series on my C4 with an otherwise stock exhaust. Very loud.

jhopper408

So no more power. I have a C5Z with titanium mufflers. Is there another muffler system thats quiter and will fit on the C3? And will it provide more power?

kansas123

I put up with series 40 on my stock exhaust for a couple of years, then installed magnaflows. Never regretted it. Much better, not so loud, not such a tin-canny sound like the flowmasters....

CheezMoe

Magnaflow>>>Flowmaster Flowmasters are loud and they drone you out of the car at cruise!

Bloodzone

Magnaflows are on my wish list.

c3_dk

I have flowmaster 40 I hate the drone @1700-1800rpm

What Magnaflows are you using (I need 2½")

Bloodzone

I believe CC has 2.5 magnaflows made to fit C3s.

ddawson

Removed my Flowmasters. Bought the CC Magnaflow kit. Now no drone.

Crimson Thunder

I had the Flowmaster 50's on my car. Nice deep tone without the drone like the 40's have.

grumpy73

When I got my 73 it had flow masters on a 355 crate motor with headers and 2 1/2 inch pipes. Way to loud for me, replaced with stock mufflers and didn't notice a lot of difference in power.

gjohnson

Flowmaster 40 series on mine. Love the roar no drone!

JoeMinnesota

Same - 40's and no drone. I had a H pipe installed behind the crossmember. Sounds awesome with a lumpy cam.

VERYSOON

I went with the CC N11 system on the 69. Not loud but nice rumble. You can really hear the secondaries kick in!!

pewter50vette

Different car 70 chevelle 396 headers had 40 series flow masters , way to much drone changed to 50 series delta flow flow masters much better, no drone to speak of still loud but i can live with it , sounds like a muscle car the 50 series have three chamber baffles in them . .

pewter50vette

Went with cc n11 on my 66 350 hp , did not think about magnaflows at the time,i like the off the road exhaust on my 66 it sounds like what it think a corvette should sound like, exhaust is a personal thing don,t know if there is a right or wrong answer, my 70 chevelle is loud but i think it fits the car for that era.

Shark Racer

Flowmasters have an interesting sound, but the more commonly used ones are not the best design for flow. Magnaflow types (which include Dynomax Ultra Flows and the Borla Pro XS that I have on my car) are a much higher flowing design and actually tend to be a little less drone-y vs Flowmaster 40 series.

The Punisher

I have headers with magnaflows. Nice sound at all speeds