467-Ratman

We are getting ready to put the beast in my car, 467 big block. I was wondering what series of Flowmasters will give me the best sound. I want it to be loud, not cheap or tinny. Which ones fit the best, and will keep my exhaust tips? Thanks for the help.

flynhi

All flowmasters are loud. With your displacement, I would get the largest FM case I could fit in. You should have at least 2.5" pipes which means that you have to modify the tips for 2.5" openings.

zwede

Be prepared for a massive drone below 2000 rpm. I used to run flows (3-chamber deltas) behind my 454 and didn't care for them at all. I got a headache after 10 minutes of driving.

gearheadz

I have the Delta Flow 50 series with the original tips. Fit real nice. Not too loud, just right for my taste.



http://www.flowmastermufflers.com/we...PerfMuff5.html

Mark


[Modified by mdsmith, 10:41 PM 2/14/2002]

69 N.O.X. RATT

I am running the new Delta series 40 in my 580 HP 454 with a cutom 3 inch exhaust. I have a pretty big silod roller .646 .653 lift and 242 and 246 duration at .050. The car sound awesome at idle, very aggresive, almost like a pro stocker. Like Zwede said they tend to drone at around 2000 rpms, we installed a crossover and took car of most of the problem.

You have built a pretty stout 468, so I imagine you want it to sound like it. If you want a very aggresive sounding car get the series 40, and a cross over. :chevy

vethead

Bets Flowmasters, are NO Flowmasters. I know I will get flamed, but hated them on my car.

Noel Carboni

A crossover pipe and a couple of catalytic converters will improve this situation immensely. Flowmasters give, IMO, the right "Chevy Thunder" sound. :D

":eek: Cats on a '71?!? :crazy:" you say... There was a short time I had no emissions equipment on my car. I used to choke and my eyes used to water when I backed into the garage. People next to me at traffic lights would glance at the nice car, but then be disgusted by the fumes.

Cats are great. :hat

-Noel


[Modified by Noel Carboni, 4:50 PM 2/15/2002]

vettesite

I run 40 series delta flows with 2.5" pipe, no cats and eq (h) pipe. I get the resonance between 1600-1900 rpm but it's not bad with the H pipe. They sound awesome.

The 40s fit great the 50s with larger pipe would be a very tight fit.

Alwyn678

Lasse

I send you my recordings of mine..

mountainmotor

Ratman,
Everyones taste is different.Bet you get tired of the Flowmaster drone.
My personal preference is Dynomax Super Turbos and the Oval case Ultra Flows.Each get plenty loud with a motor like you have.

Biker

If you search the C3 archives for "Exhaust," you'll find lots of owners complaints about Flowmasters droning sound. They'll typically say the mufflers sound cool at first, but wear on you over time, prompting a switch to DynoMax Super Turbos or other alternatives.

Ganey

mountainmotor

Exactly !

:cool:

467-Ratman

Are the DynoMax Super turbos still free flowing? I don't want to choke my motor. Thanks guys for the help.

mountainmotor

They are the best you can get!Muffler comparison proved that. You will love the sound.That is one thing everyone agrees on.At least never heard one say "I hate how the Dyno Max Super Turbos sound"

Ganey.
Your mail has been down all day.All has bounced back!

Turbo-Jet

i concur. the superturbo sound is great. flowmasters are neat, but to me, sound trucklike or even (gulp) drone like 5.0

467-Ratman

I have seen the Dynomax Super Turbo in Ecklers catalog, a little pricey, they are in Jegs too, anyone know the number of the one I need for my 71?

mountainmotor

Sorry ,don't know the part number but from Jegs they come with proper pipe bend /lenght heading back towards the differential.Really are worth the money.

Bet Ganey can fix you up with the Number.But think calling Jegs will work also.If they ship you the wrong one,it's their fault.

That motor is going to sound great with your cam! You excited?
Whoooaa! Just seen you have Merlin Rectangular heads!With those gears that buddy is gonna hit pretty good!


[Modified by mountainmotor, 6:26 AM 2/16/2002]

467-Ratman

Thanks mountainmotor! You are right, the day we light this thing up is going to be big time fun!!!! It should really be a thumper.

noskillz

Go with Dynomax, their straight through design one, not the turbos. Actually flow more that Flowmasters and lot less drone. I know it all a matter of taste, IMHO Flowmasters are just "loud" noise not "good" noise.