Flowmaster Mufflers 70 Series Big Block II

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Center Inlet / Center Outlet
Select options to see availability.

Center Inlet / Dual Outlet
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Center Inlet / Offset Outlet
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Dual Inlet / Center Outlet
In Stock - Ships between 05/13/2008 - 05/14/2008

Dual Inlet / Dual Outlet
In Stock - Ships between 05/13/2008 - 05/14/2008

Offset Inlet / Center Outlet
Select options to see availability.

Offset Inlet / Dual Outlet
In Stock - Ships between 05/13/2008 - 05/14/2008

Offset Inlet / Opposite Side Offset Outlet
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Offset Inlet / Same Side Offset Outlet
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Features

  • The Flowmaster 70 Series Big Block II Muffler is specially-made for big trucks, SUVs, RVs and any other towing vehicle
  • Accommodates maximum exhaust volume for handling huge engines at maximum load
  • Provides outstanding boosts to power and torque to towing excellence
  • The Flowmaster 70 Series adds a throaty mild exhaust tone to your vehicle without overpowering volume
  • Utilizes Flowmaster's exclusive Delta Flow technology for superior scavenging and minimal interior resonance
  • Quality Flowmaster muffler crafting uses aluminized steel for corrosion resistance and precise mig welds for maximum durability
  • Casing embossed with the Flowmaster name
  • Fits vehicles that do not match the 50 Series Big Block Muffler
  • Your Flowmaster 70 Series Big Block II Muffler carries a 3-year warranty

Description

Maximum flow volume, maximum efficiency, maximum power. The Flowmaster 70 Series Big Block II Muffler does it all for your big, bad truck, SUV, RV or other towing vehicle. With its massive chamber, the Flowmaster 70 Series handles the output of huge working engines at their highest load, boosting torque right when you need it.

The Flowmaster 70 Series Muffler also uses exclusive Delta Flow technology for the least possible interior resonance, thanks to precision deflectors in the chamber. These exact parts also aide exhaust gas scavenging for scraping together the most power and torque possible.

The 70 Series Big Block II Muffler boasts the quality construction you'd expect from Flowmaster. Each Flowmaster Muffler is built with 16-gauge aluminized steel for corrosion resistance and fully mig-welded for maximum durability. Best yet, your Flowmaster 70 Series Big Block II Muffler boasts a 3-year warranty.

Notes

  • Flowmaster 70 Series Big Block II Mufflers come in a variety of inlet/outlet configurations and sizes, shown above. Select the inlet/outlet diameter you need from the drop down at right.

Flowmaster Mufflers 70 Series Big Block II Customer Reviews

Average Customer Rating

  (9)
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Ease of Installation Ease of Installation
Price/Value Price/Value
Quality Quality
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Flowmaster Mufflers 70 Series Big Block II

Posted on 04/15/2008 by Wayne S. - 2001 Dodge Durango (Bronx,NY)

1 of 1 people found the following review helpful.

Appearance
Ease of Installation
Price/Value
Quality

"i love my flowmaster nice sound when i stomp on the go pedal quiet at idle its my second one"

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About Wayne S.
Vehicle
2001 Dodge Durango
I use my vehicle for
(commuting, hunting, fishing, travel, family activities, etc.
 
Great sound

Posted on 04/14/2008 by Steven E. - 2005 Chevy Silverado (Buckeye,AZ)

1 of 1 people found the following review helpful.

Appearance
Ease of Installation
Price/Value
Quality

"I have a 2005 chevy 4x4 2500hd. Had 40 series and hated them I'm 52 years old and they were too loud. The 70 series are great good deep sound and not so loud."

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About Steven E.
Vehicle
2005 Chevy Silverado
I use my vehicle for
Every day use.
 
Smooth, Quiet, and Tough Sounding Muffler

Posted on 07/26/2007 by Phillip E. (Crestview,FL)

2 of 3 people found the following review helpful.

"I bought this muffler to tone down the sound of my 97 Dodge Ram. My truck sounds as great as ever when accelerating, but it's quiet rumble doesn't wake my family when I head out in the morning."

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About Phillip E.
 
my truck

Posted on 07/18/2007 by John K. (Warfield,KY)

"turned out to be the best sound i have had."

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About John K.
 
Perfect for Explorers

Posted on 05/24/2007 by Igor K. (Kirkland,WA)

1 of 1 people found the following review helpful.

"I have an explorer V6 SOHC. After installation I got: 1. Better performance and improved MPG 2. Deep but not too loud sound, I was afraid that X will sound like a Civic."

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About Igor K.
 
Ram 1500 Hemi with 70 series FlowMaster

Posted on 04/25/2007 by Dick M. (Camdenton,MO)

5 of 5 people found the following review helpful.

"I'm 65 years old and this is a great sound for low cab noise and a little rumble on the outside, I love it!"

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About Dick M.
 
Good

Posted on 02/17/2007 by Alexander B. (Monmouth,OR)

4 of 4 people found the following review helpful.

"I put a Flowmaster delta 50 series on my tacoma 2.7, which sounded good but at highway speed it was a little too much in the cab. So I bought the 70 big block, which is quieter at speed but it doesn't have as good of a tone when you are accelerating as the 50. But it does have the deep tone while at low RPM"

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About Alexander B.
 
Muffler

Posted on 06/11/2006 by Penny B. (Sulphur,LA)

2 of 2 people found the following review helpful.

"I really enjoy the sound and quiteness of the muffler."

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About Penny B.
 
Quiet inside/ Mellow rumble outside (the way to go)

Posted on 01/26/2006 by Clark D. (Washington,DC)

4 of 4 people found the following review helpful.

"After 3 years of not only hearing the sweet sound of the 40 Series, but also feeling it. The 70 Series has a very welcommed sound. I have an upgraded stereo system w/ 2-12" JL Audio subs in the back, and now I'm not forced to turn up the volume just to feel the bass over the rumble of the 40 series. Don't get me wrong, I enjoyed this for 3 years. But the 70 series i s what I was really looking for in the sound arena. If I really want to hear the sound, I just make an ajustment on the accelerator pedal, in the forward direction. Thanks for being there Auto Anything. Clark Dates"

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About Clark D.