B & B Muffler

Flowmaster 70 Series Big Block II


The 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:

  • Best suited for truck applications - quiet operation!
  • Features three-chamber, Delta Flow Technology
  • Constructed of 16-guage aluminized or 409S stainless steel!
  • Fully Mig-welded for maximum durability!
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FLOWMASTER 70 SERIES BIG BLOCK II MUFFLER

Inlet Diameter: 2.25"
Outlet Diameter: 3"
Diameter: 5"
OAL: 28"
Case Length: 22"
Width: 0"
Height: 0"
Weight: 16

524703 $307.02 524703 FLOWMASTER 70 SERIES
details
FLOWMASTER 70 SERIES BIG BLOCK II MUFFLER

Inlet Diameter: 2.25"
Outlet Diameter: 2.25"
Diameter: 5"
OAL: 28"
Case Length: 22"
Width: 0"
Height: 0"
Weight: 16

524704 $307.02 524704 FLOWMASTER 70 SERIES
details
FLOWMASTER 70 SERIES BIG BLOCK II MUFFLER

Inlet Diameter: 2.50"
Outlet Diameter: 2.50"
Diameter: 5"
OAL: 28"
Case Length: 22"
Width: 0"
Height: 0"
Weight: 16

52571 $307.02 52571 FLOWMASTER 70 SERIES
details
FLOWMASTER 70 SERIES BIG BLOCK II MUFFLER

Inlet Diameter: 2.50"
Outlet Diameter: 2.50"
Diameter: 5"
OAL: 28"
Case Length: 22"
Width: 0"
Height: 0"
Weight: 16

52572 $307.02 52572 FLOWMASTER 70 SERIES
details
FLOWMASTER 70 SERIES BIG BLOCK II MUFFLER

Inlet Diameter: 2.50"
Outlet Diameter: 2.50"
Diameter: 5"
OAL: 28"
Case Length: 22"
Width: 0"
Height: 0"
Weight: 16

52573 $307.02 52573 FLOWMASTER 70 SERIES
details
FLOWMASTER 70 SERIES BIG BLOCK II MUFFLER

Inlet Diameter: 3"
Outlet Diameter: 3"
Diameter: 5"
OAL: 28"
Case Length: 22"
Width: 0"
Height: 0"
Weight: 16

53070 $307.02 53070 FLOWMASTER 70 SERIES
details
FLOWMASTER 70 SERIES BIG BLOCK II MUFFLER

Inlet Diameter: 3"
Outlet Diameter: 2.50"
Diameter: 5"
OAL: 28"
Case Length: 22"
Width: 0"
Height: 0"
Weight: 16

530702 $307.02 530702 FLOWMASTER 70 SERIES
details
FLOWMASTER 70 SERIES BIG BLOCK II MUFFLER

Inlet Diameter: 3"
Outlet Diameter: 3"
Diameter: 5"
OAL: 28"
Case Length: 22"
Width: 0"
Height: 0"
Weight: 16

53071 $307.02 53071 FLOWMASTER 70 SERIES
details
FLOWMASTER 70 SERIES BIG BLOCK II MUFFLER

Inlet Diameter: 3"
Outlet Diameter: 3"
Diameter: 5"
OAL: 28"
Case Length: 22"
Width: 0"
Height: 0"
Weight: 16

53072 $307.02 53072 FLOWMASTER 70 SERIES
details
FLOWMASTER 70 SERIES BIG BLOCK II MUFFLER

Inlet Diameter: 3"
Outlet Diameter: 2.25"
Diameter: 5"
OAL: 28"
Case Length: 22"
Width: 0"
Height: 0"
Weight: 16

530722 $307.02 530722 FLOWMASTER 70 SERIES
details
FLOWMASTER 70 SERIES BIG BLOCK II MUFFLER STAINLESS STEEL

Inlet Diameter: 3"
Outlet Diameter: 3"
Diameter: 5"
OAL: 28"
Case Length: 22"
Width: 0"
Height: 0"
Weight: 16

853072 $307.02 853072 FLOWMASTER 70 SERIES
details

 

 

 

 

 





 

 
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