Borla CrateMuffler Stock SBC 283/327/350 S-Type

Universal Fitment

Part #: 400825

Overview

The Borla 400825 CrateMuffler is a purpose-built exhaust component designed specifically for crate and custom-built small block Chevy engines, including the 283, 327, and 350 cubic inch variants. Crafted from durable T-304 stainless steel, this oval muffler combines performance, sound quality, and longevity to enhance your vehicle’s exhaust system. It is ideal for enthusiasts seeking a balance of aggressive sound and reliable operation, whether for street use or show applications. The CrateMuffler helps optimize exhaust flow, contributing to a refined engine tone while supporting the overall durability of your exhaust system. Designed with a focus on sound and performance, this muffler features a 2.5-inch inlet and an offset/center outlet configuration, making it suitable for a variety of custom exhaust setups. Its compact dimensions—14 inches long, 4.35 inches wide, and 9 inches tall—allow for flexible installation in many vehicle configurations. The directional design ensures proper exhaust flow, with the outlet identifiable by the welded mounting bracket on the endcap, aiding in correct orientation during installation.

Key Features

This CrateMuffler is engineered to deliver a distinctive S-Type sound that enhances your vehicle’s auditory presence. Its construction and design focus on durability and effective sound tuning, making it a reliable choice for enthusiasts who demand quality. The stainless steel construction ensures resistance to corrosion and high temperatures, extending the lifespan of the muffler. The directional flow design helps optimize exhaust efficiency and sound quality, providing a deep, aggressive tone without excessive drone. Its compact oval shape allows for versatile fitment in various chassis layouts, making it a practical upgrade for custom builds or restoration projects. The welded mounting bracket simplifies installation and ensures a secure fit.

Construction & Design

Constructed from high-grade T-304 stainless steel, the Borla CrateMuffler features a robust oval case with precise welds and a directional outlet. Its design emphasizes durability, corrosion resistance, and effective sound tuning, tailored specifically for small block Chevy crate engines. The offset/center outlet configuration is engineered for optimal exhaust flow and compatibility with a variety of exhaust systems.

Driving Feel & Feedback

This muffler enhances your vehicle’s exhaust note, providing a deep, aggressive sound that complements the engine’s character. It helps achieve a more engaging driving experience by emphasizing the engine’s natural tone while supporting exhaust flow efficiency. The durable construction ensures consistent performance over time, giving you confidence in your vehicle’s sound and reliability.

Installation & Fitment

The Borla CrateMuffler is designed for straightforward installation with its welded mounting bracket and standard 2.5-inch inlet. Proper fitment should be verified against your vehicle’s exhaust system specifications to ensure compatibility. Its compact oval shape allows for flexible placement within the chassis, making it suitable for a range of custom and stock applications.

What’s Included

The package includes one Borla CrateMuffler with the specified dimensions and mounting hardware necessary for installation. Additional components or hardware are not included and may need to be sourced separately based on your specific exhaust setup.