1970-1972 Exhaust system components are made from 14 gauge (.070) aluminized pipe. System Includes: 1970-1972 2" Magnaflow Mufflers 1969-1974 SMALL BLOCK (350) AUTOMATIC Front Exhaust Pipe 1969-1974 SMALL BLOCK (350) AUTOMATIC Intermediate Pipe 1957-1974 2" exhaust heat riser valve 1957-1974 2" exhaust heat riser gasket 1970-1972 stainless steel exhaust extension 1968-1972 muffler hanger with hardware 1968-1974 2" Center Exhaust Hanger Bracket AUTOMATIC Transmission
MAGNAFLOW'S WIDE OPEN PERFORMANCE MUFFLERS OUTFLOW OEM CHAMBER STYLE MUFFLERS BY AS MUCH AS 167 PERCENT. THIS REDUCES ENGINE HEAT AND BACKPRESSURE AND IMPROVES EXHAUST SCAVENGING FROM THE COMBUSTION CHAMBER. MAGNAFLOW MINIMIZES THE POWER ROBBING EFFECTS OF THE OEM SYSTEM TO RESTORE TORQUE AND HORSEPOWER TO THE ENGINE.