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Catalytic Converter

Flowmaster 70 Series Big Block II

Flowmaster 70 Series Big Block IIThe 70 Series Big Block II is designed using a large Flowmaster case for maximum volume and efficiency. The case is two inches narrower than Flowmaster's original Big Block Muffler, making for easier installation in tight applications. The 70 Series offers a mild mellow exhaust tone and incorporates a Resonant Tuning Chamber for reduced interior sound levels.

 

 

 

Application Recommendations:

  • High Performance applications
  • Late model trucks
  • Tow vehicles and RVs
  • Vehicles with dual exhaust

       

Flowmaster 70 Series Big Block II

Flowmaster 70 Series Big Block II

Flowmaster 70 Series Big Block II

Flowmaster 70 Series Big Block II

In/Out      Part # In/Out      Part # In/Out      Part # In/Out      Part #
2.50"      52570
2.50"      52571
2.50"      52572
2.50"      52573
3.00"      53070
3.00"      53071
3.00"      53072
3.00"      53073
     

Flowmaster 70 Series Big Block II

Flowmaster 70 Series Big Block II

Flowmaster 70 Series Big Block II

In/Out      Part # In/Out                 Part # In/Out             Part #
2.50"      52574
2.25" X 3.00"        524703
2.25" X 2.25"   524704
3.00"      53074
   
     

Flowmaster 70 Series Big Block II

Flowmaster 70 Series Big Block II

Flowmaster 70 Series Big Block II

In/Out            Part # In/Out            Part # In/Out               Part #
3.00" X 2.25"   530722
3.00" X 2.50"   530702
3.00" X 2.50"      530712

 


 
 

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Catalytic Converter

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Catalytic Converter
Catalytic Converters dramatically reduce harmful exhaust emissions


Catalytic Converter
Catalytic converters typically consist of a ceramic or metal honeycombed monolith substrate that carries precious metal catalysts.