Borla CrateMuffler

Universal Fitment

Part #: 400849

Overview

The Borla 400849 CrateMuffler is a high-performance exhaust component designed specifically for crate and custom-built small block Chevrolet engines, including the SBC 283, 327, and 350. Crafted from durable T-304 stainless steel, this muffler combines advanced engineering with premium materials to deliver an optimized sound and reliable performance. Its compact oval case measures 14 inches in length, 4.35 inches in width, and 9 inches in height, making it suitable for a variety of applications where a balance of sound and flow is desired. Whether you're building a hot rod, restoring a classic, or upgrading your vehicle's exhaust system, this muffler offers a tailored solution to enhance your vehicle's auditory and performance characteristics. Designed for enthusiasts who seek a distinctive S-Type sound, the CrateMuffler helps produce a deep, aggressive exhaust note while supporting efficient airflow. Its directional design ensures optimal sound quality and performance, with the outlet featuring a welded mounting bracket for straightforward installation. This muffler is intended to help improve exhaust flow, reduce backpressure, and support the power output of your small block Chevy engine, all while maintaining a sleek, factory-like appearance.

Key Features

This CrateMuffler is engineered with precision to meet the demands of performance enthusiasts and custom builders. Its key features include:

• Constructed from high-grade T-304 stainless steel for corrosion resistance and durability
• Designed with a compact oval case measuring 14 inches x 4.35 inches x 9 inches for versatile fitment
• Features an offset/center inlet configuration with a 2.25-inch diameter for optimal exhaust flow
• Directional design with welded mounting bracket for easy installation and proper orientation
• Produces a distinctive S-Type sound, balancing aggressive tone with refined quality
• Optimized for small block Chevy engines (SBC 283/327/350), enhancing sound and performance
• Helps improve exhaust flow and reduce backpressure for better engine response

Construction & Design

The Borla CrateMuffler features a robust T-304 stainless steel construction, ensuring longevity and resistance to corrosion. Its oval case design is engineered for efficient sound tuning and optimal airflow, with directional outlets that help produce the signature Borla S-Type exhaust tone. The welded mounting bracket allows for secure attachment and proper orientation within your exhaust system, making it a reliable upgrade for custom builds and crate engine applications.

Driving Feel & Feedback

This muffler enhances the auditory experience of your vehicle by delivering a deep, aggressive exhaust note characteristic of Borla's S-Type sound profile. It supports improved exhaust flow, which can contribute to better throttle response and a more engaging driving experience. The design helps balance sound quality with performance, providing a satisfying auditory feedback without excessive drone or noise.

Installation & Fitment

The CrateMuffler is designed for straightforward installation with its welded mounting bracket and compatible inlet/outlet configurations. Fitment should be verified against your specific vehicle and exhaust setup to ensure proper alignment and performance. Its universal design makes it suitable for a range of applications involving small block Chevy engines.

What’s Included

The package includes the Borla CrateMuffler with the necessary mounting bracket and hardware for installation. Additional components or hardware may be required depending on your existing exhaust system setup.