Borla 400823 CrateMuffler ATAK for Chevy Small-Block 283/327/350 V8

Vehicle Fitment

• Chevrolet Small-Block Crate Engines: 283 / 327 / 350 CID V8 (stock output)

Features

• ATAK aggressive sound tuning for a bold exhaust note
• 2.5" offset inlet and 2.5" offset outlet configuration
• Directional flow design - outlet identified by welded bracket
• Oval muffler body for compact yet high-performing design
• Precision CNC-manufactured for consistent quality
• Durable T-304 stainless steel construction
• Optimized for crate and custom-built engines
• Million-mile Borla limited warranty for long-term reliability

Specifications

• Material: T-304 stainless steel 
• Muffler body dimensions: 14" length x 4.35" x 9.10" (oval) 
• Overall length: ~19" 
• Sound level: ATAK (aggressive) 
• Inlet / Outlet: 2.5" (offset) 
• Flow direction: directional - outlet side marked by bracket 

Included Components

• 1x Borla CrateMuffler (part # 400823)
• Mounting bracket welded on outlet end (built-in)

Product Description

The Borla 400823 CrateMuffler ATAK is specially tuned for Chevrolet small-block crate engines - specifically the 283, 327, and 350 CID V8s. It's purpose-built to deliver a powerful, aggressive exhaust note while reducing unwanted drone when installed on compatible engine setups.

Built from premium T-304 stainless steel, the muffler features a 2.5" offset inlet and outlet in an oval 14" body, designed for compact packaging and optimal flow. The directional design (with outlet-side mounting bracket) ensures that the muffler is installed correctly to achieve the intended exhaust tone.

This muffler is ideal for custom builds, crate engine applications, and performance street or race cars. Backed by Borla's Million-Mile Limited Warranty, it offers both longevity and strong performance for high-output V8 builds.