Reply To: Exaust and Body

[Edgar Minnie]

Pierce Arrow factory mufflers and pipes were ENGINEERED just for PA. The mufflers were what is called in the industry double wrapped. That is they had a muffler inside a muffler. ( Made them very quiet.) They basically were straight through with very little restriction. Also, all the pipes were mandrel bent. That is to say not crushed down to a smaller diameter when being bent in the machine. Thus the system was very quiet and had almost no back pressure. Unless you have a system custom made this way, you car will not run, perform, or sound correctly. An incorrect exhaust of modern manufacture that is run on 95 percent of the cars in the PAS from the Classic era causes the car’s performance to be reduced by about 15 percent by my best estimation. Long story short almost every car in the 29 – 38 time frame is too restricted and suffering a large performance deficit due to incorrect and over restricted exhaust systems.