Description
Overview
The Flowmaster 70 Series Chambered Muffler is engineered for enthusiasts who want a refined, mild exhaust note without sacrificing performance. Built around Flowmaster’s proven Delta Flow® technology, the 70 Series Big Block muffler uses an enlarged case design to deliver improved sound control while helping to unlock mileage and power gains. It’s a versatile, universal-fit muffler ideal for drivers who want a smoother, deeper tone that stays comfortable on the highway and around town.
Constructed from 16-gauge 409S stainless steel and fully MIG welded, this muffler is designed for maximum durability under the demands of daily driving, towing, and high-performance street use. A high-temperature paint finish helps the case stand up to the heat and elements, so it holds up mile after mile.
Key Benefits
Whether you’re building a work truck, a weekend cruiser, or a street/strip machine, the 70 Series strikes the balance between muscle and manners. The Delta Flow® chambered design is tuned for a mild sound level, making it a great choice for owners who want performance character without excessive drone or volume. The larger case footprint contributes to its efficient flow and controlled acoustics.
- Delta Flow® technology for controlled, mild exhaust tone
- Enlarged case design supports sound control plus mileage and power gains
- 16-gauge 409S stainless steel construction, fully MIG welded for durability
- 3.00″ inlet diameter
- High-temperature paint finish for heat and corrosion resistance
- Universal fitment for flexible custom exhaust builds
Application & Fitment
This 70 Series Big Block muffler is a universal-fit component, making it perfect for use on trucks, SUVs, RVs, tow vehicles, and high-performance street cars where space allows. Because it’s designed to integrate into a wide range of exhaust configurations, it gives fabricators and DIY builders the freedom to position it for the best fit and flow on their specific application.
Please note that this muffler uses new hangers, which are not included, so plan your install accordingly. Exhaust tips are also sold separately, allowing you to finish your build exactly the way you want. With a 3.00″ inlet diameter, it’s ready to mate up to compatible piping in your custom system.
Built for Street/Strip Duty
Rated for street/strip vehicle types, the Flowmaster 70 Series is a dependable upgrade for enthusiasts who demand both everyday drivability and performance-minded results. Its combination of stainless steel construction, MIG-welded assembly, and Delta Flow® chambered engineering makes it a smart addition to any serious exhaust project.
This product carries a California Proposition 65 warning and is assigned Emission Code 5. Choose the configuration that fits your build and get the mild, refined sound that the 70 Series is known for.
