Model B & Model 40/46

Ford Garage

Flywheel Housing Differences

This pic shows a typical 1932 Model B Ford B-6395 flywheel housing. This housing was used in 1932 on all cars and trucks. Note the machined pads on the side for the rear engine torque rod bracket mounting.

The pic above is the 1933-34 Model 40 and Model 46 Ford flywheel housing 46-6395. Note that the machined pad is gone and that a hole is added for mounting the engine torque rods directly to the housing, similar to the flathead V8 engines. This housing was used in 1933 and 1934 on the four cylinder Model 40/46 cars and light commercial vehicles.

The addition and position of this torque rod hole also required a change in the transmission case. The mounting flange of the 1933-34 four cylinder transmission case has a clearance notch in it to clear the rod.

The 1933-34 trans case can be used on 1932 Model B's, but the 1932 Model B transmission case (without the notch) cannot be used on the 1933-34 Model 40/46 vehicles.

Here is a pic in direct comparison. Model 40/46 flywheel housing on top, Model B on the bottom. Both housings are made from cast and machined grey iron.

US and Canadian Model B and BB, and British (1932 only) Model AB, ABF, B, and BF serial numbers were stamped on an as-cast pad on the top of the flywheel housing, above the starter as shown in the pic below. The engine block pad was left unstamped and as-cast.

The pic above shows the typical US and Canadian Model B engine number location on top of the Model B or Model 46 flywheel housing, above the starting motor. Note that the number reads from the front of the engine in this example. Others read from the rear.

More related information on Ford Garage:

  1. For more Model A & B related information, use the Site Search box at the top or bottom of this page.
  2. Model B & 46 Transmission Case Variations
  3. Model A & B Flywheel Ring Gears
  4. Model A & B Stock and Lightened Flywheels
  5. Model A, B, & V8 Pressure Plates and Clutches
  6. Model A & B Crankshaft, Flywheel, & Clutch Rotating Mass Effects

February 2004