Flowmaster 70 Series Big Block II Mufflers

The 70 Series Big Block Muffler uses a longer case for increased volume and added sound reduction that will still fit many applications where the wider 50 Series Big Block muffler wont fit. The 70 Series Big Block utilizes Flowmasters patented Delta Flow Technology for maximum efficiency and minimum interior resonance street cars, most trucks, SUVs, RVs and tow vehicles that require quiet operation with improved sound.