Description
Overview
The Flowmaster Exhaust Muffler brings proven Delta Flow® performance to your build with the acclaimed 70 Series Big Block design. Engineered around an enlarged case for improved sound control, this muffler is built to deliver mileage and power gains while keeping the exhaust note refined. If you’re ready to shop for exhaust upgrades that balance drivability and performance, this is a smart, versatile centerpiece for your exhaust system.
With a mild sound level, the 70 Series Big Block is purpose-built for drivers who want a cleaner, more controlled tone rather than an aggressive drone. That makes it an excellent match for daily-driven trucks and SUVs, tow rigs, and street builds where you want performance without an overpowering cabin sound.
Key Benefits
Flowmaster’s Delta Flow® technology is at the heart of this muffler, engineered to manage exhaust flow for optimized sound control alongside the mileage and power gains the 70 Series is known for. The enlarged case gives the exhaust room to breathe, contributing to that mild, refined character while supporting the demands of high-performance driving.
Durability is built in. This car exhaust muffler is constructed from 16-gauge aluminized steel and fully MIG welded for maximum strength, then finished in high-temperature paint to stand up to the heat and conditions an exhaust automobile component faces every day.
- 70 Series Big Block muffler with Delta Flow® technology for controlled sound plus mileage and power gains
- Enlarged case design for improved sound management and a mild exhaust note
- 16-gauge aluminized steel construction, fully MIG welded for maximum durability
- High-temperature paint finish for lasting heat resistance
- Dual inlet and dual outlet configuration with a 2.25″ inlet diameter
- Universal fitment for flexible installation across a wide range of builds
Fitment & Configuration
This Flowmaster muffler features a dual inlet and dual outlet layout with a 2.25-inch inlet diameter, giving you a capable core for a cat back exhaust system or a broader performance exhaust upgrade. As a universal-fit muffler, it’s designed to adapt to many applications, making it a flexible choice whether you’re piecing together a new setup or replacing tired mufflers.
Flowmaster recommends the 70 Series Big Block for trucks, SUVs, RVs, tow vehicles, and high-performance street cars where space allows. It carries an Emission Code of 5 and is classified for Truck/SUV vehicle types. Installation uses new hangers (not included), and exhaust tips are sold separately, so you can tailor the final look and mounting to your specific vehicle.
Whether you’re comparing a magnaflow muffler and a flowmaster muffler or building out a complete cat back muffler system, the 70 Series Big Block delivers the durable construction and controlled sound that make Flowmaster mufflers a trusted name in exhaust performance.
