The internal pipe has a quantity of 172, 1/4" porting holes & 3 baffles, which is the correct baffling system to create that original muffler sound, and also eliminate engine back pressure.
Independent testing with a dynamo test machine (volume 5, Number 1 of Secrets of Speed, July 1995) shows the original design mufflers (A5230ARORG, A5230ORG and A5230ORG/SS) increased power by 3.8 horsepower, or a 7.8% increase over the inexpensive muffler (A5230).
This is because the inexpensive muffler does not use the correct diameter pipe or the correct internal baffles; therefore, flow of the exhaust gases from the muffler is restricted, which will affect horsepower.
Vehicle Fitment:
The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
| Make |
Model |
Years |
| Ford |
Model AA |
1929 - 1931 |
| Ford |
Model A |
1929 - 1931 |
