Description
Flowmaster 70 Series Big Block Exhaust Muffler
Upgrade the sound and performance of your ride with the Flowmaster 70 Series Big Block Exhaust Muffler, a universal-fit muffler engineered for drivers who want a refined, mild tone without sacrificing flow. Built around Flowmaster’s proven Delta Flow® technology and an enlarged case, this muffler is designed to sharpen exhaust performance while keeping cabin drone in check — an ideal balance for daily drivers, weekend cruisers, and hardworking trucks alike.
Whether you’re building a complete exhaust system from scratch or replacing a tired factory unit, this Flowmaster muffler delivers the durability and sound control that make the brand a benchmark name in the muffler world. It’s a smart foundation piece when you shop for exhaust upgrades that need to hold up to real-world use.
Key Benefits
The 70 Series Big Block uses Delta Flow® technology inside an enlarged case to improve sound control while supporting mileage and power gains. That combination makes it a versatile choice across a wide range of applications, from tow rigs to high-performance street cars where space allows. With a mild sound level, it produces a controlled, understated tone rather than an aggressive roar — perfect for owners who want added character without excessive volume.
Construction is where this muffler earns its reputation. It’s built from 16 gauge aluminized steel and fully MIG welded for maximum durability, then protected with a high-temperature paint finish to stand up to heat and the elements. This is a car exhaust and truck exhaust component made to last through the long haul.
- Flowmaster Delta Flow® technology for improved sound control, mileage, and power gains
- Enlarged 70 Series Big Block case design
- 16 gauge aluminized steel construction, fully MIG welded for maximum durability
- High-temperature paint finish
- Mild sound level for a controlled, refined tone
- 3.00″ inlet diameter with dual outlet location
Fitment & Configuration
This is a universal-fit muffler designed for Truck/SUV applications and equally suited to RVs, tow vehicles, and high-performance street cars where space allows. It features a 3.00-inch inlet diameter and a dual outlet location, giving you flexibility as you plan the routing of your exhaust system. Because it’s a universal muffler, it uses new hangers (not included), so be sure to source the mounting hardware your build requires. Exhaust tips are sold separately, letting you finish the look exactly the way you want.
From a simple muffler swap to a full performance exhaust project, the Flowmaster 70 Series Big Block gives you dependable construction, the refined Delta Flow® sound profile, and the versatility to fit a broad range of exhaust automobile applications. Choose the configuration that fits your build and enjoy the proven combination of durability and controlled tone that Flowmaster mufflers are known for.
