Best Flowmasters for C3, 1971
Thread Starter
Burning Brakes
Joined: Aug 2001
Posts: 1,002
Likes: 0
From: Bay City MI.
Best Flowmasters for C3, 1971
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.
Le Mans Master
Joined: Aug 2000
Posts: 6,273
Likes: 14
From: Austin TX
Re: Best Flowmasters for C3, 1971 (467-Ratman)
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.
Race Director
Joined: Sep 1999
Posts: 11,361
Likes: 383
From: Plano TX
Re: Best Flowmasters for C3, 1971 (467-Ratman)
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.
Burning Brakes
Joined: Jan 2001
Posts: 1,004
Likes: 16
From: Gainesville, Florida
Re: Best Flowmasters for C3, 1971 (zwede)
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]
http://www.flowmastermufflers.com/we...PerfMuff5.html
Mark
[Modified by mdsmith, 10:41 PM 2/14/2002]
Safety Car
Joined: Aug 2001
Posts: 3,892
Likes: 13
From: Pettis Performance 565 with two stages of Nitrous Supply nitrous 1.082, 4.61 at 155, 7.17 at 192
Re: Best Flowmasters for C3, 1971 (zwede)
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
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
Pro
Joined: Jan 2002
Posts: 534
Likes: 0
From: FL
Re: Best Flowmasters for C3, 1971 (zwede)
Be prepared for a massive drone below 2000 rpm.
":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]
Burning Brakes
Joined: Aug 1999
Posts: 774
Likes: 0
From: Palatine IL
Re: Best Flowmasters for C3, 1971 (467-Ratman)
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.
The 40s fit great the 50s with larger pipe would be a very tight fit.
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Team Owner
Joined: Jun 2001
Posts: 43,136
Likes: 155
From: Thomson Georgia
Re: Best Flowmasters for C3, 1971 (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.
The 40s fit great the 50s with larger pipe would be a very tight fit.
Drifting
Joined: Jul 2001
Posts: 1,418
Likes: 1
Re: Best Flowmasters for C3, 1971 (467-Ratman)
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.
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.
Burning Brakes
Joined: Jan 2001
Posts: 1,218
Likes: 2
From: Plainfield IL
Re: Best Flowmasters for C3, 1971 (mountainmotor)
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.
Race Director
Joined: Apr 1999
Posts: 11,520
Likes: 13
From: CORVETTE 77 385 C.I. TEXAS
Re: Best Flowmasters for C3, 1971 (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.
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.
Exactly !
:cool:
Drifting
Joined: Jul 2001
Posts: 1,418
Likes: 1
Re: Best Flowmasters for C3, 1971 (467-Ratman)
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!
Ganey.
Your mail has been down all day.All has bounced back!
Melting Slicks
Joined: Feb 2000
Posts: 3,052
Likes: 0
From: Vancouver BC, Canada
Re: Best Flowmasters for C3, 1971 (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!
Ganey.
Your mail has been down all day.All has bounced back!
Thread Starter
Burning Brakes
Joined: Aug 2001
Posts: 1,002
Likes: 0
From: Bay City MI.
Re: Best Flowmasters for C3, 1971 (Turbo-Jet)
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?
Drifting
Joined: Jul 2001
Posts: 1,418
Likes: 1
Re: Best Flowmasters for C3, 1971 (467-Ratman)
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]
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]
Thread Starter
Burning Brakes
Joined: Aug 2001
Posts: 1,002
Likes: 0
From: Bay City MI.
Re: Best Flowmasters for C3, 1971 (mountainmotor)
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.
Racer
Joined: Mar 2001
Posts: 438
Likes: 0
From: Houston, Texas
Re: Best Flowmasters for C3, 1971 (467-Ratman)
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.