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SKU: 400852 | UPC: 808422008525
Borla 400852 CrateMuffler ATAK Big Block Chevy 396/402/427 V8 2.5in Offset Inlet/Center Outlet 14 x 4.35 x 9in Oval Muffler
Borla 400852 CrateMuffler brings ATAK aggressive sound to Chevrolet Big Block 396/402/427 CID V8 crate and custom engines with stock exhaust output. This 2.5-inch offset inlet to center outlet oval muffler installs in custom exhaust setups for classic Chevy trucks, cars, and performance builds. Gain power, torque, better fuel economy, and drone-free throttle response with every rev.
Key Features
- ATAK Sound Technology: Directional design tuned specifically for Big Block Chevy 396/402/427 V8 engines eliminates drone while delivering deep, aggressive exhaust note recognized by enthusiasts.
- T-304 Stainless Steel Build: Premium material resists corrosion for long-lasting performance in all conditions, outlasting standard mufflers.
- Precise CNC Manufacturing: 14in L x 4.35in H x 9in W oval body with 2.5in inlet/outlet ensures exact fit and flow for stock output engines.
- Power and Efficiency Gains: Increases horsepower, torque, and fuel economy while extending engine life through optimized exhaust flow.
- Million-Mile Warranty: Borla backs this muffler with unlimited mileage coverage for complete peace of mind.
Product Notes
- Muffler is directional; outlet end identified by welded mounting bracket on endcap for correct installation.
- Designed for street use; not off-road only.
- Ships in protective packaging measuring 20in x 10in x 6in.
Installation Notes
- Professional installation recommended.
- Verify inlet/outlet orientation before mounting; offset inlet positions toward engine side.
- Compatible with standard 2.5in pipe connections; no special hardware required.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1965-1982 | Chevrolet | Camaro | 396/402/427 V8 |
| 1964-1972 | Chevrolet | Chevelle | 396/402/427 V8 |
| 1965-1982 | Chevrolet | Corvette | 396/402/427 V8 |
| 1968-1974 | Chevrolet | Nova | 396/402 V8 |
| 1960-1987 | Chevrolet | C/K Pickup | 396/402/427 V8 |
| 1967-1981 | Chevrolet | Impala | 396/402/427 V8 |
| 1964-1980 | Chevrolet | El Camino | 396/402/427 V8 |
Why Choose Borla?
- Leaders in stainless steel exhaust since pioneering systems for classics like Ferrari and Rolls-Royce.
- Most experienced exhaust brand with proven wins in racing and street performance.
- Every CrateMuffler engineered for specific engine families like Big Block Chevy for perfect sound and flow.
Frequently Asked Questions
-
Q: Which engines is this muffler designed for?
A: Fits Chevrolet Big Block 396/402/427 CID V8 crate and custom engines with stock exhaust output in compatible vehicles. -
Q: What material is used in construction?
A: T-304 stainless steel throughout for maximum durability and corrosion resistance. -
Q: What warranty coverage is provided?
A: Million-Mile Warranty covers defects in materials and workmanship for the original owner.
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Secure box 20in x 10in x 6in
- Weight: 11 lbs
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