Mustang
Just Flowmaster
View Cart
My Account
Order Tracking
Customer Support
Flowmaster Gasoline Systems Flowmaster Diesel Systems Flowmaster MufflersTips and Accessories
Free Shipping Over 50.00


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.
70 Series Big Block II


5" x 10" x 22" - 28" Overall Length
70 Series Center/Center 70 Series Offset/Center 70 Series Center/Offset
In/Out
Part Number
 
In/Out
Part Number
 
In/Out
Part Number
 
2.50"
   
2.50"
   
2.50"
   
3.00"
   
3.00"
   
3.00"
   
70 Series Offset/Offset     70 Series Center/Dual     70 Series Dual/Dual    
In/Out Part Number     In/Out Part Number     In/Out Part Number    
2.50" 52573 3"/2.25" 530722 2.25"/2.25" 524704
3.00" 53073                    
70 Series Dual/Center     70 Series Center/Dual     70 Series Offset/Dual    
In/Out Part Number     in/Out Part Number     In/Out Part Number    
2.25"/3" 524703     3"/2.5" 530702     3"/2.5" 530712