Flowmaster 70 Series Big Block II Muffler — 3" Center Inlet / 3" Center Outlet

SKU: BDXN_53070

About Flowmaster Flowmaster engineers high-quality automotive parts and accessories trusted ...Read more

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Sale price$249.95
2490 ENTRIES10X
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

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Part Numbers
Sizing & Fit

About Flowmaster

Flowmaster engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Flowmaster lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Flowmaster 70 Series Big Block II Muffler: Deep Tone, High Performance

The Flowmaster 70 Series Big Block II Muffler is designed for drivers who crave a deep, powerful, and refined exhaust note without excessive interior drone. This premium muffler utilizes Flowmaster's advanced technology to produce a rich, muscular tone that's perfect for V8 engines, especially larger displacement ones. Constructed from durable steel with a black paint finish for excellent corrosion resistance, it's built for longevity.

Muffler Details:

  • Series: 70 Series Big Block II
  • Inlet Type: Center
  • Inlet Size: 3 inches
  • Outlet Type: Center
  • Outlet Size: 3 inches
  • Body Dimensions: 22" x 10" x 5" Oval
  • Overall Length: 28 inches
  • Material: Steel
  • Finish: Black Paint
  • Application: Universal
  • Sold As: Each

The large oval body of the 70 Series muffler provides ample internal volume, allowing for excellent sound moderation and performance tuning. Its universal design makes it a versatile choice for a wide array of vehicles, including muscle cars, trucks, and SUVs. By optimizing exhaust flow, this muffler helps to increase horsepower and torque, delivering a noticeable improvement in your vehicle's responsiveness. Achieve that classic Flowmaster sound with a sophisticated tone. Get your Flowmaster 70 Series Big Block II Muffler from GGCRACING today.

About Flowmaster

Flowmaster engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Flowmaster lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Flowmaster 70 Series Big Block II Muffler: Deep Tone, High Performance

The Flowmaster 70 Series Big Block II Muffler is designed for drivers who crave a deep, powerful, and refined exhaust note without excessive interior drone. This premium muffler utilizes Flowmaster's advanced technology to produce a rich, muscular tone that's perfect for V8 engines, especially larger displacement ones. Constructed from durable steel with a black paint finish for excellent corrosion resistance, it's built for longevity.

Muffler Details:

  • Series: 70 Series Big Block II
  • Inlet Type: Center
  • Inlet Size: 3 inches
  • Outlet Type: Center
  • Outlet Size: 3 inches
  • Body Dimensions: 22" x 10" x 5" Oval
  • Overall Length: 28 inches
  • Material: Steel
  • Finish: Black Paint
  • Application: Universal
  • Sold As: Each

The large oval body of the 70 Series muffler provides ample internal volume, allowing for excellent sound moderation and performance tuning. Its universal design makes it a versatile choice for a wide array of vehicles, including muscle cars, trucks, and SUVs. By optimizing exhaust flow, this muffler helps to increase horsepower and torque, delivering a noticeable improvement in your vehicle's responsiveness. Achieve that classic Flowmaster sound with a sophisticated tone. Get your Flowmaster 70 Series Big Block II Muffler from GGCRACING today.

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