Borla ATAK CrateMuffler for Chevy SBC 283/327/350, 2.5in Offset/Center 14in x 4.35in x 9in Oval 400823

Fits Chevrolet Small Block V8 (SBC) 283, 327, and 350 engines.

The Borla CrateMuffler is the industry's first exhaust solution specifically engineered to optimize the acoustic and power profiles of crate and custom-built engines. This model features Borla's most aggressive ATAK (Abnormally Tuned Applied Kinetics) sound technology, providing a high-volume, performance-oriented exhaust note that remains crisp and clear. These mufflers are precision-tuned for the SBC engine family to eliminate the cabin drone often found with universal components.

Each CrateMuffler is constructed from premium T-304 stainless steel, offering superior corrosion resistance and longevity compared to standard T-400 series or aluminized steel. The internal flow design is directional to maximize scavenging and sound quality; for easy installation, the outlet side is identifiable by a mounting bracket welded directly to the endcap. Precision CNC manufacturing ensures consistent wall thickness and a perfect fit for custom exhaust builds.

• Part Number: 400823
• Engine Family: SBC 283 / 327 / 350
• Sound Level: ATAK (Aggressive)
• Material: High-Grade T-304 Stainless Steel
• Inlet/Outlet: 2.5-inch Offset / Center
• Case Dimensions: 14in x 4.35in x 9in
• Shape: Oval
• Installation: Directional flow (bracket on outlet)
• Warranty: Borla Million-Mile Warranty