Flowmaster 70 Series Big Block II Muffler — 3" Center Inlet, Dual 2.5" Outlets, 28" Long

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SKU: BDXN_530702
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Sale price$242.42 Regular price$249.95
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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

Product Description
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 Hi-Performance Muffler - Powerhouse Sound

Unleash the commanding sound of a big-displacement engine with the Flowmaster 70 Series Big Block II Hi-Performance Muffler. Designed specifically for V8 engines, this muffler delivers a deep, aggressive, and powerful exhaust note that complements the muscle of larger engines without being overly raspy or obnoxious.

Features of the 70 Series Big Block II:

  • Deep, Powerful Tone: Engineered to produce a rich, deep sound ideal for V8s and larger displacement engines.
  • Dual Outlet Design: Features a 3-inch center inlet and dual 2.5-inch outlets, allowing for a more aggressive exhaust setup and enhanced flow.
  • Optimized for Performance: The internal baffling and chamber design are tuned to improve exhaust scavenging and contribute to engine performance.
  • Durable Construction: Crafted from high-quality steel with a black paint finish for excellent corrosion resistance and long-lasting durability.
  • Generous Size: The 22 x 10 x 5-inch oval body and 28-inch overall length provide ample volume for sound control and robust construction.
  • Universal Application: Designed as a universal muffler, offering flexibility for installation on a wide variety of vehicles.

This muffler is an excellent choice for classic muscle cars, modern performance vehicles, and trucks where a deep, authoritative exhaust sound is desired. Its robust construction and performance-oriented design make it a superior upgrade. Enhance your vehicle's sound and performance with the Flowmaster 70 Series Big Block II Muffler, available at GGCRACING.

Product Details

Product Description
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 Hi-Performance Muffler - Powerhouse Sound

Unleash the commanding sound of a big-displacement engine with the Flowmaster 70 Series Big Block II Hi-Performance Muffler. Designed specifically for V8 engines, this muffler delivers a deep, aggressive, and powerful exhaust note that complements the muscle of larger engines without being overly raspy or obnoxious.

Features of the 70 Series Big Block II:

  • Deep, Powerful Tone: Engineered to produce a rich, deep sound ideal for V8s and larger displacement engines.
  • Dual Outlet Design: Features a 3-inch center inlet and dual 2.5-inch outlets, allowing for a more aggressive exhaust setup and enhanced flow.
  • Optimized for Performance: The internal baffling and chamber design are tuned to improve exhaust scavenging and contribute to engine performance.
  • Durable Construction: Crafted from high-quality steel with a black paint finish for excellent corrosion resistance and long-lasting durability.
  • Generous Size: The 22 x 10 x 5-inch oval body and 28-inch overall length provide ample volume for sound control and robust construction.
  • Universal Application: Designed as a universal muffler, offering flexibility for installation on a wide variety of vehicles.

This muffler is an excellent choice for classic muscle cars, modern performance vehicles, and trucks where a deep, authoritative exhaust sound is desired. Its robust construction and performance-oriented design make it a superior upgrade. Enhance your vehicle's sound and performance with the Flowmaster 70 Series Big Block II Muffler, available at GGCRACING.

Product Details

Product Description

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 Hi-Performance Muffler - Powerhouse Sound

Unleash the commanding sound of a big-displacement engine with the Flowmaster 70 Series Big Block II Hi-Performance Muffler. Designed specifically for V8 engines, this muffler delivers a deep, aggressive, and powerful exhaust note that complements the muscle of larger engines without being overly raspy or obnoxious.

Features of the 70 Series Big Block II:

  • Deep, Powerful Tone: Engineered to produce a rich, deep sound ideal for V8s and larger displacement engines.
  • Dual Outlet Design: Features a 3-inch center inlet and dual 2.5-inch outlets, allowing for a more aggressive exhaust setup and enhanced flow.
  • Optimized for Performance: The internal baffling and chamber design are tuned to improve exhaust scavenging and contribute to engine performance.
  • Durable Construction: Crafted from high-quality steel with a black paint finish for excellent corrosion resistance and long-lasting durability.
  • Generous Size: The 22 x 10 x 5-inch oval body and 28-inch overall length provide ample volume for sound control and robust construction.
  • Universal Application: Designed as a universal muffler, offering flexibility for installation on a wide variety of vehicles.

This muffler is an excellent choice for classic muscle cars, modern performance vehicles, and trucks where a deep, authoritative exhaust sound is desired. Its robust construction and performance-oriented design make it a superior upgrade. Enhance your vehicle's sound and performance with the Flowmaster 70 Series Big Block II Muffler, available at GGCRACING.

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