1931 Ford A400-A

1931 Ford A400

The most expensive production model available at it's time. The Ford A400-A was manufactured during the Great Depression, and targeted the middle to high income customers.

Production of the convertible sedan began on May 22, 1931 and was available to the general public in the middle of June. The total production of this model was 5085 cars, with 208 of them assembled in Ford plants in other countries. We estimate that only 100 are remaining.


The A400 used the same engine as the rest of the Model A family. The engine in this convertable sedan has been modified somewhat internally, while retaining the mostly stock outward appearance. Ron Kelly of RK Designs in Texas performed the engine work.

The poured babbit bearings were replaced with insert type bearings. Intake and exhaust valves were replaced and valve rotaters were added. The engine rotating parts were balanced and weight was removed from the flywheel. The camshaft was reground to produce more flow, while retaining an almost stock idle.

Chevrolet aluminum pistons replace the stock Ford units. A Brumfield-Findley high compression head was installed in place of the original Model A cylinder head. The stock Ford gravity splash oiling system was retained with the addition of the affordable oil filter system.

Following Ron's suggestion, we installed a high speed ring and pinion (3:54 to 1 ratio) and retained the stock Model A transmission. The car cruises at 65 M.P.H. and produces approximately 60 horsepower.


It is generally accepted that the A400 was so named because at the same time there was a social register called "The Four Hundred". This register stood as a symbol of wealth and power, and one needed both of these to be considered a worthy addition. With leather upholstery, walnut wood-graining, and carpets, the A400 sold for about $640.

This car was sold to
a local Colfax resident.


© 2003 Stl Tikn Machinery