1940 vs 1948 Rear Backing Plate Differences?

[Doug]

What are the Visual Differences between the 1939-'41 Ford style rear backing
plates and 1946-'48 Ford style rear backing plates?
Is the E-Brake hardware the Same for Both styles? Thanks in advance.

[Mart]

E brake stuff is the same (I'm pretty sure).

Early have two removable eccentric bolts at the bottom with 1/2" threads and 3/4 af nuts on them.

later have two fixed studs rivetted in and splitpins (cotter pins) on the inside).

Mart.

[cobbie]

The adjusters are a sure give away. 46/48 have only two.

Cobbie

[barnfind08]

The levers for em brake are different.

[Randy in ca]

Besides the previously mentioned fixed and adjustable lower studs, there are a couple of other differences between the early and later styles. There are a different style of clips (and the way they are attached to the backing plate) at the mid-point of the shoes, and the later style also has 6 raised shoe contact points. A couple of these pictures are of front backing plates but they show the same differences as the rear will have. Not familiar with any differences with the parking brake.

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[philipswanson]

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Better to forget both and go with the self actuating Lincolns. Great upgrade. Check out Speedway.