Flowmaster Outlaw Muffler - 2-1/2 in Center Inlet - 2-1/2 in Center Outlet - 7 in Long - 4-1/2 in Diameter - Stainless - Black 1443A #4277 are designed to clear

#4277 are designed to clear most roller rockers on factory cast iron and Edelbrock cylinder heads

1981-1993 Chevrolet Caprice

These Steel Super Locks without a lash cap recess features a 10

5/8-20 in Outlet

Locking Ties Since 1995

Flowmaster Outlaw Muffler - 2-1/2 in Center Inlet - 2-1/2 in Center Outlet - 7 in Long - 4-1/2 in Diameter - Stainless - Black 1443A #4277 are designed to clearUniversal Race Muffler Not a direct fit. Some adaptation required. This muffler is directional. The internal rings lean back towards the outlet of the muffler. Round Case Allows Install In Limited Space Apps Designed for Maximum Horsepower and Torque Minimal Decibel Reduction Race Application Where Muffler Rules are in Effect No Internal Packing To Blow Out Premium Flowmaster Quality Polished Embossed Flowmaster Logo High Temperature Ceramic Coating