Which Flowmaster mufflers do I need???

Reply Subscribe

Thread Tools

Search this Thread

Mar 23, 2006 | 10:09 AM

Q's 68

Thread Starter

Racer

Joined: Oct 2005

Posts: 427

Likes: 0

From: Cary Illinois

Which Flowmaster mufflers do I need???

I want to go with a set of Flowmaster DF50 mufflers for my 68 327/350. I want to put in a new 2 1/2 inch exhaust system wit hthe new mufflers. My question is, what style of mufflers do I need? I guess what I'm trying to say is, what configuration should I order? I'm not sure what works with our vettes.

Thanks!

Mar 23, 2006 | 10:31 AM

lowbuck72

Drifting

Joined: Jun 2005

Posts: 1,950

Likes: 498

From: Chino Hills CA

I don't know what model flowmasters i have on my '72, but they're similar in dimensions to the stock mufflers, don't forget to have an "H" pipe installed.

Mar 23, 2006 | 12:19 PM

Kid Vette

Melting Slicks

Joined: Jun 2003

Posts: 2,802

Likes: 241

From: Niles, MI

You're a wimp if you don't get the 40s.

Mar 23, 2006 | 01:08 PM

PRNDL

Team Owner

Joined: Jul 1999

Posts: 26,545

Likes: 46

From: Huntersville NC

I think the answer to the question that I think you are asking is..............

What I mean is, not sure what your question is, nor am I sure of the answer... but... (got that?)

I think the original mufflers had an offset inlet and a center outlet, but a skilled exhaust guy can make other configurations fit nicely.

Mar 23, 2006 | 01:13 PM

rihwoods

Race Director

Joined: Feb 2005

Posts: 16,100

Likes: 17

Magnum Bullets..no guts...no glory...

Mar 23, 2006 | 01:23 PM

Tele_Man

Pro

Joined: Aug 2002

Posts: 581

Likes: 0

From: Southeast WI

I just put the DF-50's on my car a few weeks ago.

You want the offset inlet / center outlet.

I went to custom exhaust shop near my house and the owner did a great job of making a custom fitted inlet pipe so that muffler was tucked up nicely between the spare tire and the inside fender.

Good luck!

Mar 23, 2006 | 04:43 PM

Q's 68

Thread Starter

Racer

Joined: Oct 2005

Posts: 427

Likes: 0

From: Cary Illinois

Gottcha. Thanks! Is there really that much of a difference between the 40's and the 50's?

Mar 23, 2006 | 08:01 PM

Kid Vette

Melting Slicks

Joined: Jun 2003

Posts: 2,802

Likes: 241

From: Niles, MI

40s set off car alarms driving through a parking lot.

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Joe Kucinski

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Verdad Gallardo

Top 10 Corvettes Coming to Mecum Indy 2026!

Brett Foote

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Michael S. Palmer

10 Revolutionary 'Corvette Firsts' Most People Don't Know

Joe Kucinski

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Michael S. Palmer

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Joe Kucinski

10 Most Common Corvette Problems of the Last 20 Years!

Joe Kucinski

5 MOST and 5 LEAST Popular Corvette Model Years in History!

Joe Kucinski

2027 Corvette Buyer's Guide: Everything You Need to Know!

Joe Kucinski

Mar 23, 2006 | 09:07 PM

2th farmer

Melting Slicks

Joined: Nov 2004

Posts: 2,540

Likes: 1

From: Pineville Kentucky

CI 6-8-9 Veteran

I just had 50's installed last week and really like them. Sounds about right on my BB. A pain to install right though.

Mar 23, 2006 | 09:41 PM

#10

Tele_Man

Pro

Joined: Aug 2002

Posts: 581

Likes: 0

From: Southeast WI

Quote:

Originally Posted by Q's 68

Gottcha. Thanks! Is there really that much of a difference between the 40's and the 50's?

I talked to a lot of people, including the tech support folks at Flowmaster, and everyone said the 40's will be louder and higher pitched. The 40's may create too much interior noise, but it's all a matter of personal taste.

The 50's have a deeper, throaty sound. They are not "poppy". There is a resonance in the interior at ~1500-1700 RPM, but it's not annoying. I usually only hear it as I'm pulling away in 1st gear.

If you look through the online Flowmaster catalog you'll notice that the 50's are more commonly applied to C3 Vettes than the 40's.

But I'm sure you'll find a lot of folks who love the 40's too. Depends what kind of sound and volume you're looking for.

Good luck.

Mar 23, 2006 | 09:43 PM

#11

David Ey

Burning Brakes

Joined: Sep 2004

Posts: 1,167

Likes: 2

From: Ft.Worth Texas

Well, if you think you have to have muflers, get the 40's. Thats what I have but I'm thinking of removing them and going with straight pipes out the back. Should not be as loud as sidepipes.

Mar 23, 2006 | 09:45 PM

#12

Gordonm

Race Director

Joined: Dec 1999

Posts: 19,610

Likes: 778

From: Forked River NJ

I have the 50s on mine and they sound great. I was advised against the 40s and never regretted it. They are a tight fit but if done right they look and sound great.

Mar 24, 2006 | 06:09 AM

#13

Tele_Man

Pro

Joined: Aug 2002

Posts: 581

Likes: 0

From: Southeast WI

Quote:

Originally Posted by Gordonm

I have the 50s on mine and they sound great. I was advised against the 40s and never regretted it. They are a tight fit but if done right they look and sound great.

Gordon, you were one of the guys who steered me to the 50's. Thanks!

Mar 24, 2006 | 06:28 AM

#14

Gordonm

Race Director

Joined: Dec 1999

Posts: 19,610

Likes: 778

From: Forked River NJ

Quote:

Originally Posted by Tele_Man

Gordon, you were one of the guys who steered me to the 50's. Thanks!

Mar 24, 2006 | 11:08 AM

#15

Q's 68

Thread Starter

Racer

Joined: Oct 2005

Posts: 427

Likes: 0

From: Cary Illinois

I'm sold

I'll go with the 50's.

Mar 24, 2006 | 11:59 AM

#16

7t2vette

The ORIGINAL and bestest

Joined: Oct 2000

Posts: 10,009

Likes: 240

From: Toronto Ontario

Toronto Events Coordinator

Quote:

Originally Posted by Q's 68

I'm sold

I'll go with the 50's.

You should consider the new Super 40's, they make the most hp and are more free flowing than the other Flowmasters. I have them on my car, and they sound awesome. Very deep with none of the interior resonance that the regular 40's have. This link is to the mufflers, not the specific model you need:

http://store.summitracing.com/defaul...4&autoview=sku

Mar 27, 2006 | 02:50 PM

#17

Q's 68

Thread Starter

Racer

Joined: Oct 2005

Posts: 427

Likes: 0

From: Cary Illinois

Quote:

Originally Posted by 7t2vette

Great advice! I went to a local custom exhaust installer (30 years in the business) and he directed me to the Super 40's. He said they're easier to fit and have just the sound I'm looking for. I'll let you know how the install goes on Wednesday

Reply Subscribe