Description
The Flowmaster 70 Series Big Block Muffler is designed to deliver excellent sound control, improved efficiency, and dependable performance for larger vehicles and high-performance street applications. Utilizing Flowmaster’s Delta Flow® technology and an enlarged muffler case, this chambered design helps improve horsepower, torque, and engine efficiency while maintaining a mild to near-stock exterior exhaust tone.
Ideal for trucks, SUVs, RVs, motorhomes, and tow vehicles, the 70 Series Big Block muffler significantly reduces interior resonance, making it a comfortable option for daily driving and long-distance use. Its durable 16-gauge aluminized steel construction and fully MIG-welded design ensure long-lasting reliability under demanding conditions.
Finished with a high-temperature black coating, this muffler is a proven solution for vehicles where space allows and quiet performance is a priority without sacrificing power gains.
Key Features
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Flowmaster Delta Flow technology for improved exhaust efficiency
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Enlarged case design for superior sound control
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Improved horsepower, torque, and engine efficiency
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Mild to stock exterior exhaust tone
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Minimal interior resonance
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Fully MIG-welded construction for durability
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Built from 16-gauge aluminized steel
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Designed for trucks, SUVs, RVs, and tow vehicles
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High-temperature black painted finish
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Universal performance application
Specifications
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Brand: Flowmaster
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Muffler Series: 70 Series Big Block
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Muffler Type: Chambered
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Sound Level: Mild
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Shape: Oval
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Body Material: Aluminized Steel
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Finish: High-Temperature Paint
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Color: Black
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Body Length: 22.00 in
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Body Width: 10.00 in
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Body Height: 5.00 in
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Overall Length: 28.00 in
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Inlet Diameter: 2.25 in
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Inlet Inside Diameter: 2.25 in
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Inlet Outside Diameter: 2.38 in
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Inlet Location: Dual
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Inlet Quantity: 2
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Inlet Type: Clamp-On
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Inlet Connection: Slip-Fit
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Outlet Inside Diameter: 2.25 in
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Outlet Outside Diameter: 2.38 in
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Outlet Location: Dual
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Outlet Quantity: 2
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Outlet Type: Dual
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Outlet Connection: Slip-Fit
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Mount Type: Uses New Hangers (Not Included)
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Clamps Included: No
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Hanger Included: No
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Heat Shield Attached: No
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Reversible: No
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Tunable: No
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Grade Type: Performance
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Product Type: Street Mufflers
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Part Type: Exhaust Muffler
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Category: Exhaust
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Sub Category: Mufflers
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Vehicle Type: Classic Muscle Car
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Universal Or Specific Fit: Universal
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Fitment: Universal
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Emission Code: 5
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California Proposition 65: No
Fitment
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Universal fit for custom exhaust systems
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Recommended for trucks, SUVs, RVs, motorhomes, and tow vehicles
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Suitable for high-performance street vehicles where space allows
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Designed for dual 2.25 inch inlet and dual 2.25 inch outlet exhaust configurations
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Requires custom installation
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New exhaust hangers not included
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Exhaust clamps not included
